Consulta: subjectFacets:"Land use change"
Registros recuperados: 55
Data/hora: 10/06/2024 08:29:01

Cambio de uso de suelo por crecimiento urbano en la cuenca de Metztitlán, Hidalgo.
Provedor de dados: 32
Autores: Jiménez Moreno, María Josefa.
Uno de los factores fundamentales en el incremento de las zonas urbanas es el crecimiento de la población. En este estudio se analizó y modeló el cambio de uso de suelo generado por el incremento de la población en las ciudades de Atotonilco, Tulancingo y Zacualtipán de la Cuenca de Metztitlán, Hidalgo, con la finalidad de conocer y estimar el área de expansión urbana en los próximos años, contemplando los años 2010, 2015 y 2020 para fines de planificación urbana. El segundo capítulo reporta un análisis comparativo de algunos métodos empleados en la detección y modelación del cambio de uso del suelo generado por el crecimiento urbano, el cual determinó que no existe un método específico para analizar la dinámica del cambio de uso de suelo urbano, ya que...
Palavras-chave: Crecimiento urbano; Planificación urbana; Cambio de uso del suelo; Urban growth; Urban planning; Land use change; Maestría; Forestal.
Ano: 2010
URL: http://hdl.handle.net/10521/120

Dinámica y ordenamiento de uso de la tierra en el oriente del municipio de Texcoco, Estado de México
Provedor de dados: 32
Autores: Pérez Miranda, Ramiro.
Se presenta una propuesta de ordenamiento de uso de la tierra que integra diferentes  componentes, siendo los más importantes un análisis de cambios de uso y la proyección de los mismos, además de una evaluación física de la tierra. El análisis de cambio de uso de la tierra se apoyó en una interpretación visual de imágenes capturadas en los años 1993 y 2004. Posteriormente, empleando técnicas de análisis multicriterio espacial, cadenas de Markov y autómatas celulares se proyectaron los cambios al año 2014 en un ambiente de SIG. Mediante una adaptación de la metodología de evaluación de tierras propuesta por la FAO se realizó la evaluación física de la misma en el oriente del municipio de Texcoco. Adicionalmente, se desarrolló una metodología para promover...
Palavras-chave: Ordenamiento territorial; Uso de la tierra; Escenarios futuros; Cambios de uso de la tierra; Evaluación física de la tierra Land use planning; Land use; Future scenarios; Land use change; Physical land assessment.
Ano: 2012
URL: http://hdl.handle.net/10521/847

Análisis del cambio de uso de suelo y su impacto socioeconómico y agrícola en San Miguel Tocuila, Texcoco, Estado de México.
Provedor de dados: 32
Autores: Pérez Guerrero, Alfredo.
La Agricultura Urbana y Peri-urbana (AUP) se refiere a prácticas agrícolas dentro y alrededor de las ciudades, las cuales compiten por recursos indispensables para cualquier actividad (tierra, agua, energía y mano de obra) que podrían destinarse también a otros fines para satisfacer las necesidades de la población urbana (COAG-FAO, 1999). La presente investigación se enfoca en la identificación de sistemas de producción en espacios urbanos y periurbanos, así como en los productores que continúan trabajando en la producción agrícola y en las formas de producción de sus alimentos. Posteriormente se realizó el análisis de datos sociodemográficos de los ejidatarios y sus familias que existen en la localidad. El cambio del uso del suelo se ha definido como uno...
Palavras-chave: Periurbano; Sistemas de producción; Crecimiento; Cambio de uso de suelo; Periurban; Production; Systems growth; Land use change; Desarrollo Rural; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2189

Estudio multiescalar del recurso hídrico como factor de cambio en distritos del noreste de Tamaulipas
Provedor de dados: 32
Autores: Gutiérrez Castorena, Edgar Vladimir.
A partir de 1994, la Tercera Unidad de Asistencia Técnica del Distrito de Riego No. 026,  región noreste del estado de Tamaulipas, fue modificado por un déficit de humedad colocando a  la región en una situación de alta vulnerabilidad social, económica, política, cultural y  agroecológica. Debido a la complejidad del problema se llevó a cabo una investigación  multiescalar desde, el nivel mega-macro hasta el microscópico empleando diferentes  metodologías: interpretación de imágenes de satélite, uso de sistemas de información geográfica,  creación de bases de datos (90,500 piezas), encuestas directas con productores, análisis físicos,  químicos, mineralógicos y micromorfológicos de suelos. Los objetivos que se plantearon fueron:  1) Evaluar el uso de la...
Tipo: Tesis
Palavras-chave: Patrón de cultivo; Maíz; Sorgo; SIG; Cambio de uso de suelo; Clasificación de Suelos; Suelos semi-áridos; Déficit de agua; Percepción remota; Doctorado; Edafología; Maize; Sorghum; GIS; Land use change; Environment adaptation; Crop patterns; Irrigation Districts; Remote sensing.
Ano: 2009
URL: http://hdl.handle.net/10521/1284

Cambio de uso de suelo por crecimiento urbano en la cuenca de Metztitlán, Hidalgo.
Provedor de dados: 32
Autores: Jiménez Moreno, María Josefa.
Uno de los factores fundamentales en el incremento de las zonas urbanas es el crecimiento de la población. En este estudio se analizó y modeló el cambio de uso de suelo generado por el incremento de la población en las ciudades de Atotonilco, Tulancingo y Zacualtipán de la Cuenca de Metztitlán, Hidalgo, con la finalidad de conocer y estimar el área de expansión urbana en los próximos años, contemplando los años 2010, 2015 y 2020 para fines de planificación urbana. El segundo capítulo reporta un análisis comparativo de algunos métodos empleados en la detección y modelación del cambio de uso del suelo generado por el crecimiento urbano, el cual determinó que no existe un método específico para analizar la dinámica del cambio de uso de suelo urbano, ya que...
Palavras-chave: Crecimiento urbano; Planificación urbana; Cambio de uso del suelo; Urban growth; Urban planning; Land use change; Maestría; Forestal.
Ano: 2010
URL: http://hdl.handle.net/10521/120

Áreas prioritarias mediante escenarios de deforestación y servicios ambientales en la Sierra Norte de Puebla.
Provedor de dados: 32
Autores: Chávez González, Honoria.
La identificación de áreas prioritarias es una herramienta valiosa que permite orientar y optimizar los esfuerzos de estudio, conservación y aprovechamiento sustentable de recursos forestales. La presente investigación integró una metodología, mediante la combinación de diferentes técnicas cuantitativas en un ambiente de sistemas de información geográfica y sensores remotos, para la identificación de áreas prioritarias de recarga hídrica en la Unidad de Manejo Forestal Zacatlán, Puebla. El estudio se constituyó de tres componentes de investigación: (1) Análisis retrospectivo (1986-2010), actual y perspectivo (2010-2030) de cambios de uso de la tierra y riesgo de deforestación; (2) Identificación de áreas con aptitud para proveer servicios ambientales...
Palavras-chave: Cambio de uso de la tierra; Riesgo de deforestación; Recarga de acuíferos; Evaluación multicriterio; Regresión logística; Land use change; Deforestation risk; Aquifer recharge; Multicriteria evaluation; Logistic regression; Forestal; Maestría.
Ano: 2014
URL: http://hdl.handle.net/10521/2248

Análisis comparativo de costos del uso de la tierra en la  Sierra Norte de Puebla.
Provedor de dados: 32
Autores: Rojas López, Odilia.
En México, los mecanismos de pago por servicios ambientales (PSA) son relativamente recientes por lo que todavía existen algunos aspectos a mejorar en su aplicación. Un componente crucial en el PSA Hidrológico (PSAH) es la determinación de los montos de pago adecuados a los productores forestales por la renta de sus terrenos. La presente investigación estimó la renta de la tierra bajo los usos agrícola, pecuario y forestal, a través del método costo de oportunidad, en la Sierra Norte de Puebla. Además, determinó cómo las características físico-químicas de los suelos de aptitud forestal se modifican ante un cambio de uso de la tierra limitando la provisión de servicios ambientales. El estudio se integró y desarrolló en cuatro capítulos: (I) Introducción...
Palavras-chave: Cambios de uso de la tierra; Características químicas; Costo de oportunidad; Servicios ambientales; Renta de la tierra; Land use change; Chemical characteristics; Opportunity cost; Environmental services; Land rent; Maestría; Forestal.
Ano: 2011
URL: http://hdl.handle.net/10521/475

Dinámica y ordenamiento de uso de la tierra en el oriente del municipio de Texcoco, Estado de México
Provedor de dados: 32
Autores: Pérez Miranda, Ramiro.
Se presenta una propuesta de ordenamiento de uso de la tierra que integra diferentes  componentes, siendo los más importantes un análisis de cambios de uso y la proyección de los mismos, además de una evaluación física de la tierra. El análisis de cambio de uso de la tierra se apoyó en una interpretación visual de imágenes capturadas en los años 1993 y 2004. Posteriormente, empleando técnicas de análisis multicriterio espacial, cadenas de Markov y autómatas celulares se proyectaron los cambios al año 2014 en un ambiente de SIG. Mediante una adaptación de la metodología de evaluación de tierras propuesta por la FAO se realizó la evaluación física de la misma en el oriente del municipio de Texcoco. Adicionalmente, se desarrolló una metodología para promover...
Palavras-chave: Ordenamiento territorial; Uso de la tierra; Escenarios futuros; Cambios de uso de la tierra; Evaluación física de la tierra Land use planning; Land use; Future scenarios; Land use change; Physical land assessment.
Ano: 2012
URL: http://hdl.handle.net/10521/920

Análisis comparativo de costos del uso de la tierra en la  Sierra Norte de Puebla.
Provedor de dados: 32
Autores: Rojas López, Odilia.
En México, los mecanismos de pago por servicios ambientales (PSA) son relativamente recientes por lo que todavía existen algunos aspectos a mejorar en su aplicación. Un componente crucial en el PSA Hidrológico (PSAH) es la determinación de los montos de pago adecuados a los productores forestales por la renta de sus terrenos. La presente investigación estimó la renta de la tierra bajo los usos agrícola, pecuario y forestal, a través del método costo de oportunidad, en la Sierra Norte de Puebla. Además, determinó cómo las características físico-químicas de los suelos de aptitud forestal se modifican ante un cambio de uso de la tierra limitando la provisión de servicios ambientales. El estudio se integró y desarrolló en cuatro capítulos: (I) Introducción...
Palavras-chave: Cambios de uso de la tierra; Características químicas; Costo de oportunidad; Servicios ambientales; Renta de la tierra; Land use change; Chemical characteristics; Opportunity cost; Environmental services; Land rent; Maestría; Forestal.
Ano: 2011
URL: http://hdl.handle.net/10521/475

Dinámica y ordenamiento de uso de la tierra en el oriente del municipio de Texcoco, Estado de México
Provedor de dados: 32
Autores: Pérez Miranda, Ramiro.
Se presenta una propuesta de ordenamiento de uso de la tierra que integra diferentes componentes, siendo los más importantes un análisis de cambios de uso y la proyección de los mismos, además de una evaluación física de la tierra. El análisis de cambio de uso de la tierra se apoyó en una interpretación visual de imágenes capturadas en los años 1993 y 2004. Posteriormente, empleando técnicas de análisis multicriterio espacial, cadenas de Markov y autómatas celulares se proyectaron los cambios al año 2014 en un ambiente de SIG. Mediante una adaptación de la metodología de evaluación de tierras propuesta por la FAO se realizó la evaluación física de la misma en el oriente del municipio de Texcoco. Adicionalmente, se desarrolló una metodología para promover...
Tipo: Tesis
Palavras-chave: Ordenamiento territorial; Uso de la tierra; Escenarios futuros; Cambios de uso de la tierra; Evaluación física de la tierra; Doctorado; Forestal; Land use planning; Land use; Future scenarios; Land use change; Physical land assessment.
Ano: 2008
URL: http://hdl.handle.net/10521/1583

Social-ecological drivers of multiple ecosystem services: what variables explain patterns of ecosystem services across the Norrstr&amp;#246;m drainage basin?
Provedor de dados: 7
Autores: Meacham, Megan; Stockholm Resilience Centre, Stockholm University; megan.meacham@su.se; Queiroz, Cibele; Stockholm Resilience Centre, Stockholm University; The Beijer Institute of Ecological Economics, Swedish Royal Academy of Sciences; Cibele.Queiroz@su.se; Peterson, Garry D; Stockholm Resilience Centre, Stockholm University; garry.peterson@su.se.
In human dominated landscapes many diverse, and often antagonistic, human activities are intentionally and inadvertently determining the supply of various ecosystem services. Understanding how different social and ecological factors shape the availability of ecosystem services is essential for fair and effective policy and management. In this paper, we evaluate how well alternative social-ecological models of human impact on ecosystems explain patterns of 16 ecosystem services (ES) across the 62 municipalities of the Norrstr&amp;#246;m drainage basin in Sweden. We test four models of human impact on ecosystems, land use, ecological modernization, ecological footprint, and location theory, and test their ability to predict both individual ES and bundles of...
Tipo: NON-REFEREED
Palavras-chave: Ecological footprint; Ecological modernization; Ecosystem service bundles; Land use change; Location theory; Stockholm; Sweden.
Ano: 2016

Ex Ante Impact Assessment of Policies Affecting Land Use, Part A: Analytical Framework
Provedor de dados: 7
Autores: Helming, Katharina; Leibniz-Centre for Agricultural Landscape Research (ZALF); khelming@zalf.de; Diehl, Katharina; Leibniz-Centre for Agricultural Landscape Research (ZALF); diehl@zalf.de; Bach, Hanne; Department of Policy Analysis NERI; hba@dmu.dk; Dilly, Oliver; School of Integrated Climate System Services, University of Hamburg; oliver.dilly@uni-hamburg.de; Kuhlman, Tom; Agricultural Economics Research Institute (LEI); tom.kuhlman@wur.nl; Sieber, Stefan; Leibniz-Centre for Agricultural Landscape Research (ZALF); stefan.sieber@zalf.de; Tabbush, Paul; ; paul.tabbush@virgin.net; Tscherning, Karen; Leibniz-Centre for Agricultural Landscape Research (ZALF); tscherning@zalf.de; Wascher, Dirk; Alterra WUR; dirk.wascher@wur.nl; Wiggering, Hubert; Leibniz-Centre for Agricultural Landscape Research (ZALF); wiggering@zalf.de.
Contemporary policy making calls for scientific support to anticipate the possible consequences of optional policy decisions on sustainable development. This paper presents an analytical framework for ex ante assessment of economic, social, and environmental impacts of policy driven land use changes that can be used as an aid to policy making. The tasks were to (1) link policy scenarios with land use change simulations, (2) link land use change simulations with environmental, social, and economic impacts through indicators, and (3) valuate the impacts in the context of sustainable development. The outcome was a basis for dialogue at the science-policy interface in the process of developing new policies on the European level that impact on land and land...
Tipo: Peer-Reviewed Reports
Palavras-chave: Analytical framework; Discussion tools; DPSIR-framework; Ex ante impact assessment; Land use change; Model-based tools; Participatory assessment tools; Policy development; Sustainability.
Ano: 2011

A Framework for Participatory Impact Assessment: Involving Stakeholders in European Policy Making, a Case Study of Land Use Change in Malta
Provedor de dados: 7
Autores: Morris, Jake Breton; Forest Research; jake.morris@forestry.gsi.gov.uk; Tassone, Valentina; Wageningen University; Valentina.Tassone@wur.nl; de Groot, Rudolf; Wageningen University; Dolf.deGroot@wur.nl; Camilleri, Marguerite; Malta Environment &amp; Planning Authority; Marguerite.Camilleri@mepa.org.mt; Moncada, Stefano; University of Malta; stefano.moncada@um.edu.mt.
Tipo: Peer-Reviewed Reports
Palavras-chave: European policy making; Land use change; Malta; Participatory impact assessment; Stakeholder participation.
Ano: 2011

The social value of biodiversity and ecosystem services from the perspectives of different social actors
Provedor de dados: 7
A vast literature is now available on ecosystem services (ES), their potential as a tool for analyzing intertwined processes of ecological and social change, and their monetary valuation. Much less is known about the social value of different ES for different social actors (SA), and their links with specific components of biodiversity. We unpack the social aspects of an interdisciplinary and multi-SA methodology that allows us to assess how different SA perceive and value different ES, and how they associate them with different components of biodiversity, ecological attributes, and ecosystem types. We apply the methodology to a study area in the Gran Chaco region of South America, presenting original social-ecological information from the field. Being...
Tipo: Peer-Reviewed Reports
Palavras-chave: Argentina; Chaco region; Ecosystem services; Interdisciplinary research; Land use change; Multifunctional landscapes; Nature&amp;#8217; S benefits to people; Social value of biodiversity.
Ano: 2015

Soil loss as a result of the interactions between natural landscape attributes and human activities in Ventania, Argentina
Provedor de dados: 67
Autores: Delgado,María I.
The Ventania System is a hilly area emerging in the extended Pampas plains of Argentina. Shallow soils with rock fragments and steep slopes are the main limitations for agriculture in this area. The effect of land use changes on annual soil loss on these soils in the Belisario Creek watershed was estimated. The universal soil loss equation (USLE) was applied for 1966 and 2016 to estimate soil loss generated by water erosion at the watershed scale. The equation was fed with rainfall, soil, slope, land use and management local data. Critical areas were identified using a geographic information system. The watershed has increased its fragility. For instance, the ranges of high and very high risk of soil loss (&gt;50 Mg.ha-1.y-1.) increased their coverage from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Land use change; Erosion; Territorial management.
Ano: 2018
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2018000100011

Expansão da silvicultura no Brasil Central: estudo de caso em Rio Verde (GO).
Provedor de dados: 14
Autores: BUSCHINELLI, C. C. de A.; COSTA, B. M. R.
Resumo: O município de Rio Verde, em Goiás, ocupa hoje uma posição de destaque no cenário agropecuário nacional. O uso da terra em sua extensão territorial passou a sofrer mudanças profundas na segunda metade do século XX, principalmente a partir da década de 1970, na esteira da modernização da agricultura brasileira. A sua grande extensão territorial e alta capacidade produtiva agropecuária são alguns dos fatores que motivaram a instalação de grandes empresas e conglomerados do agronegócio em Rio Verde, o que lhe garantiu essa referida posição central no quadro regional. Assim, o objetivo fundamental deste trabalho foi averiguar se esse crescimento agroindustrial foi acompanhado de um expressivo aumento da silvicultura no município, sobretudo de...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Silvicultura; Eucalipto; Uso da Terra; Sistema de Informação Geográfica; Silviculture; Eucalyptus; Land use; Land use change; Geographic information systems.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1126480

Mudança de cobertura e uso do solo no leste acreano e seus impactos.
Provedor de dados: 14
Autores: SALIMON, C. I.; AMARAL, E. F. do; ANDERSON, L. O.; SILVA JUNIOR, C. H. L.; BROWN, I. F.
O sudoeste da Amazônia era, até a metade do século 20, predominantemente coberto por uma floresta ombrófila dominada por bambus, com manchas de floresta ombrófila densa. Devido a diversos fatores sócio-econômicos e ondas de ocupação, a região foi sendo transformada e hoje somente 29% do leste acreano apresenta cobertura florestal nativa. Esta mudança de cobertura do solo tem implicações diretas em vários aspectos que vão desde a conservação da biodiversidade, utilização sustentável de recursos naturais e também na prestação de serviços ecossistêmicos, como precipitação e temperatura atmosférica. A fragmentação da paisagem chegou ao seu ponto atual, onde tem-se que metade da floresta remanescente encontra-se sob efeito de borda (a menos de 120 m da borda),...
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Fragmentação florestal; Cambio de uso de la tierra; Plantas de cobertura; Deforestación; Fragmentación de hábitats; Granjas de demostración; Reservatorios de carbono; Fazenda Experimental Catuaba; Universidade Federal do Acre; Rio Branco (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental.; Cobertura do Solo; Uso da Terra; Desmatamento; Impacto Ambiental; Campo Experimental; Carbono; Estoque.; Land use change; Ground cover plants; Deforestation; Environmental impact; Habitat fragmentation; Demonstration farms; Carbon sinks.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1128541

Avoidance of land use change (LUC)from grassland to arable land, Germany.
Provedor de dados: 14
Autores: KHALIL, M. I.; CORDOVIL, C. M. D. S.; FRANCAVIGLIA, R.; HENRY, B.; KLUMPP, K.; KONCZ, P.; LLORENTE, M.; MADARI, B. E.; MUÑOZ-ROJAS, M.; RAINER, N.
1. Related practices. 2. Description of the case study. 3. Context of the case study. 4. Possibility of scaling up. 5. Impact on soil organic carbon stocks. 6. Other benefits of the practice. 7. Potential drawbacks to the practice. 8. Recommendations before implementing the practice. 9. Potential barriers for adoption.
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Land use change; Grasslands; Arable soils; Germany.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1136316

Brazil's agricultural land, cropping frequency and second crop area: FAOSTAT statistics and new estimates.
Provedor de dados: 14
Autores: NOVAES, R. M. L.; TUBIELLO, F. N.; GAROFALO, D. F. T.; DE SANTIS, G.; PAZIANOTTO, R. A. A.; MATSUURA, M. I. da S. F.
Resumo: Uma representação acurada do território é crucial para uma avaliação adequada da sustentabilidade da produção de alimentos e bioenergia. No Brasil, três culturas com ambos os usos (soja, milho e cana) ocupam 3/4 da área agrícola do país. A área de uso agropecuário da terra, a frequência de cultivo e a área de cultivo na segunda safra são parâmetros essenciais para um grande número de modelos de uso da terra. Entretanto, os autores detectaram inconsistências nas estimativas da FAOSTAT e da literatura quanto a esses parâmetros. O objetivo deste trabalho é apresentar os resultados de uma iniciativa conjunta entre a Embrapa e a FAO para atualizar esses parâmetros com base em estatísticas oficiais. A atualização dos dados da FAOSTAT levou a uma mudança...
Tipo: Folhetos
Palavras-chave: Uso da Terra; Cultivo Seqüencial; Milho; Soja; Cana de Açúcar; Entressafra; Safrinha; Sugarcane.; Corn; Soybeans; Land use change; Cropping sequence; Intensive cropping.
Ano: 2022
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1140492

A conservação de bacias e os desafios para a sustentabilidade da agricultura.
Provedor de dados: 14
Autores: FIGUEIREDO, R. de O.; GREEN, T. R.
Resumo: Esta publicação aborda a complexidade e os desafios para que se alcance a sustentabilidade no uso da terra, no tocante à conservação dos recursos hídricos e respectivas bacias hidrográficas. Trata da dinâmica de alterações nos processos biogeoquímicos e hidrológicos presentes nas bacias onde o ecossistema natural é modificado. Considera, também, as variações temporais e espaciais distintas, dependendo das características biofísicas e biogeoquímicas originais da bacia, ao lado do uso da terra presente. Os autores abordam como e porque a bacia hidrográfica deve ser considerada a unidade de estudo primordial nas análises ambientais que visam a conservação de recursos hídricos. São, assim, considerados os processos naturais, o manejo agropecuário, a...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Sustentabilidade ambiental; Bacia Hidrográfica; Uso da Terra; Qualidade da Água; Agricultural watersheds; Watersheds; Land use; Land use change; Water quality.
Ano: 2019
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1112886

Soil Health Changes Over a 25-Year Chronosequence From Forest to Plantations in Rubber Tree (Hevea brasiliensis) Landscapes in Southern Côte d'Ivoire: Do Earthworms Play a Role?
Provedor de dados: 5
Autores: Tondoh, Jérôme E.; Dimobe, Kangbéni; Guéi, Arnauth M.; Adahe, Léontine; Baidai, Yannick; N'Dri, Julien K.; Forkuor, Gerald.
The agro-ecological drawbacks of the spread of rubber tree plantations in Côte d'Ivoire since the 1990's are obvious even though they have not been properly investigated. They consist of biodiversity loss, land degradation and food insecurity, which have extended into the existing cocoa-led degraded areas whose rehabilitation have unfortunately not started. This situation increases not only the threat on soil health status but also undermines the capability of soils to deliver ecosystem services that are key to sustainable agricultural production. The current study took advantage of a chronosequence in rubber tree landscapes to assess soil health deterioration in general and possibly earthworm-mediated role in soil health changes. The hypothesis...
Tipo: Text
Palavras-chave: Biodiversity; Earthworms; Functional groups; Land use change; Soil degradation; Soil threats; Rubber tree plantations.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00504/61555/65462.pdf

A spatial bio-economic modelling approach on the trade-offs between global bioenergy demand, agricultural intensification, expansion, and trade
Provedor de dados: 31
Autores: Lotze-Campen,   Hermann; Popp,   Alexander; Beringer,   Tim; Muller,   Christoph; Lucht,   Wolfgang.
Increased future demands for food, fibre and fuels from biomass can only be met if the available land and water resources on a global scale are used and managed as efficiently as possible. The main routes for making the global agricultural system more productive are through intensification and technological change on currently used agricultural land, land expansion into currently non-agricultural areas, and international trade in agricultural commodities and processed goods. In order to analyse the trade-offs and synergies between these options, we present a global bio-economic modelling approach with a special focus on spatially explicit land and water constraints as well as technological change in agricultural production. For a given bioenergy demand...
Tipo: Conference Paper or Presentation
Palavras-chave: Land use change; Spatial modelling; Technological change; Environmental Economics and Policy; International Development; International Relations/Trade; Land Economics/Use; Research and Development/Tech Change/Emerging Technologies; C61; F15; Q24; Q25.
Ano: 2009
URL: http://purl.umn.edu/51458

Conservation Programs: Will Grain Production Reclaim Acres in the South?
Provedor de dados: 31
Autores: Petrolia,   Daniel R.; Ibendahl,   Gregory A.
A state-level analysis of the Re-enrollment and Extension (REX) program on southern states indicates a positive relationship between percentage of tree acreage and Conservation Reserve Program (CRP) re-enrollment for states in which conservation acreage is dominated by trees. However, the relationship depends on crop mix where CRP acreage is dominated by grass. County-level analysis suggests that states will differ in how quickly they opt out of CRP. Of the states examined, Arkansas is the most likely to move land to corn, with Mississippi the least likely. Arkansas and Kentucky will switch to soybean first, followed by Mississippi and Georgia.
Tipo: Journal Article
Palavras-chave: Conservation Reserve Program (CRP); Corn; Land use change; Re-enrollment and Extension Program (REX); Soybean; Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Q15; Q18; Q21; Q24.
Ano: 2008
URL: http://purl.umn.edu/47197

Slippage Effects of the Conservation Reserve Program: New Evidence from Satellite Imagery
Provedor de dados: 31
Autores: Fleming,   David A.
The Conservation Reserve Program (CRP) is the largest land retirement program ever operated in the US. Since its inception in 1985, many researchers have studied the impacts of this program; however, only a few have analyzed how the CRP affects surrounding non–enrolled parcels. In this research I examine how the CRP may affect the conversion of non–cropped land to agriculture, a phenomenon referred to as “slippage” in the literature, and specifically addressed by Wu (2000) and Roberts and Bucholtz (2005). Building on these earlier studies, I empirically model slippage using data derived from satellite imagery that provides information on land cover changes between 1992 and 2001. The study area consists of 1,053 counties located in the Northern Plains, Corn...
Tipo: Working or Discussion Paper
Palavras-chave: CRP; Land use change; Satellite imagery; Slippage effect; Agricultural and Food Policy; Land Economics/Use; Q15; Q24.
Ano: 2010
URL: http://purl.umn.edu/61394

Biofuel Growth: Global Greenhouse Gas Emissions Impacts from Changes in Forest Carbon Stocks
Provedor de dados: 31
Autores: Golub,   Alla A.; Hertel,   Thomas W.; Rose,   Steven K.; Sohngen,   Brent.
There is significant policy interest in liquid biofuels with appealing prospects for energy security, farm security, poverty alleviation, and climate change. Large-scale commercial biofuel production could have far reaching implications for regional and global markets – particularly those related to energy and land use. As such, large-scale biofuels growth is likely to have significant impacts on global greenhouse gas (GHG) emissions. This paper utilizes a CGE model with explicit biofuel, land, and energy markets. The model is able to estimate the effects on the broad range of input and output markets potentially affected globally by biofuels policies. One of the most controversial issues within the biofuels debate is potential indirect changes in land use...
Tipo: Conference Paper or Presentation
Palavras-chave: Land use change; Biofuels; CGE model; Forest carbon stocks; GHG emissions; Resource /Energy Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/47450

Need, Greed or Customary Rights - Which Factors Explain the Encroachment of Protected Areas? Empirical Evidence from a Protected Area in Sulawesi, Indonesia
Provedor de dados: 31
Autores: Birner,   Regina; Maertens,   Miet; Zeller,   Manfred.
The encroachment of protected areas for agricultural and livestock production is an important challenge for nature conservation in developing countries. The driving forces of encroachment are debated - major arguments focus on (1) the need of local people to cultivate land inside protected areas due to poverty, (2) commercial interests of cultivating inside protected areas, which indicates free-riding ("greed"), and (3) resistance against protected areas caused by disregard of customary rights. Understanding the role of these factors is important for designing appropriate conservation and development strategies. The paper contributes to this understanding by analyzing the encroachment of a National Park in Sulawesi, Indonesia. The analysis is guided by a...
Tipo: Conference Paper or Presentation
Palavras-chave: Land use change; Nature conservation; Household decision-making; Regulation; Indonesia; Resource /Energy Economics and Policy; O13; Q12; Q57.
Ano: 2006
URL: http://purl.umn.edu/25706

The Effect of Climate Change on Transportation Flows and Inland Waterways Due to Climate-Induced Shifts in Crop Production Patterns
Provedor de dados: 31
Autores: Attavanich,   Witsanu; McCarl,   Bruce A.; Fuller,   Stephen W.; Vedenov,   Dmitry V.; Ahmedov,   Zafarbek.
This study was funded by the the University Transportation Center for Mobility, Texas Transportation Institute
Tipo: Conference Paper or Presentation
Palavras-chave: Grain Transportation; Climate change and agriculture; Climate change and transportation; Land use change; Supply of grain; Demand for grain; Crop production patterns; Inland waterways; Mississippi River Basin; Climate change adaptation; Welfare distribution; Corn transportation; Soybeans transportation; Crop Production/Industries; Demand and Price Analysis; Environmental Economics and Policy; International Relations/Trade; Land Economics/Use; C61; L91; L92; Q15; Q17; Q54; R14; R41; R13.
Ano: 2011
URL: http://purl.umn.edu/109241

DETERMINANTS OF AGRICULTURAL LAND ABANDONMENT IN POST-SOVIET EUROPEAN RUSSIA
Provedor de dados: 31
Autores: Prishchepov,   Alexander V.; Radeloff,   Volker C.; Muller,   Daniel; Dubinin,   Maxim; Baumann,   Matthias.
Socio-economic and institutional changes may accelerate land-use and land-cover change. Our goal was to explore the determinants of agricultural land abandonment within one agro-climatic and economic region of post-Soviet European Russia during the first decade of transition from a state-command to market-driven economy (between 1990 and 2000). We integrated maps of abandoned agricultural land derived from 30 m resolution Landsat TM/ETM+ images, environmental and socioeconomic variables and estimated logistic regressions. Results showed that post-Soviet agricultural land abandonment was significantly associated with lower average grain yields in the late 1980s, higher distance from the populated places, areas with low population densities, for isolated...
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural land abandonment; Institutional change; Land use change; Spatial analysis; Logistic regression; Remote sensing; Russia; Agribusiness; Q15.
Ano: 2011
URL: http://purl.umn.edu/115363

The non-permanence of optimal soil carbon sequestration
Provedor de dados: 31
Autores: Hediger,   Werner.
Carbon sequestration in agricultural soils is considered as an option of greenhouse gas mitigation in many countries. But, the economic potential is limited by the dynamic process of saturation and the opportunity cost of land use change. In addition, this article shows that permanence cannot, in general, be achieved in the strict sense of maintaining the soil carbon stock on an increased equilibrium level. Rather, a cyclical pattern with periodical release of sequestered carbon can be economically optimal from both the farmers’ and societal point of view.
Tipo: Conference Paper or Presentation
Palavras-chave: Agriculture; Climate policy; Carbon sequestration; Land use change; Economic analysis.; Land Economics/Use; Q15; Q24; Q54.
Ano: 2009
URL: http://purl.umn.edu/51057

Production system based global livestock sector modeling: Good news for the future
Provedor de dados: 31
Autores: Havlik,   Petr; Herrero,   Mario; Mosnier,   Aline; Obersteiner,   Michael; Schmid,   Erwin; Fuss,   Sabine; Schneider,   Uwe A.
Livestock is recognized as one of the major drivers of current and future global change. This is caused on the production side, by the substantial resource requirements (land and water) per unit of output, and the related greenhouse gas emissions, and on the consumption side, by the growing demand due to population and economic growth. Our paper investigates whether productivity gains which enabled to the crop sector to satisfy the increased demand under decreasing real prices, and with little additional land, in the past decades, can be expected in the livestock sector in the future. To answer this question, we implement the recursively dynamic partial equilibrium bottom-up model of the global agriculture and forest sectors (GLOBIOM), expanded by a newly...
Tipo: Conference Paper or Presentation
Palavras-chave: Mathematical programming; Livestock; Land use change; Livestock Production/Industries.
Ano: 2011
URL: http://purl.umn.edu/114552

The Economy-wide Greenhouse Gas Impacts of the Biofuels Boom (or Bust)
Provedor de dados: 31
Autores: Birur,   Dileep K.; Golub,   Alla A.; Hertel,   Thomas W.; Rose,   Steven K.
Several studies in the recent past have offered a contrasting and wide range of perspectives on economic and environmental implications of biofuels.  In this study we develop a comprehensive and consistent framework for analyzing the global economic interactions and the direct and indirect impacts of biofuels production on greenhouse gas (GHG) emissions. We utilize a global Computable General Equilibrium (CGE) model which consists of interaction of energy commodities with explicit biofuels and their by-product sectors, land endowment classified by agro-ecological zones, and emission of four major GHGs - carbon dioxide, methane, nitrous oxide, fluorinated gases from agricultural and economic activities, including emissions associated with biofuel feedstock,...
Tipo: Conference Paper or Presentation
Palavras-chave: Biofuels; Renewable Energy; Computable General Equilibrium (CGE); Agro Ecological Zones (AEZs); Land use change; Greenhouse Gas Emission.; Environmental Economics and Policy; International Relations/Trade; Land Economics/Use; Resource /Energy Economics and Policy; C68; Q18; Q42; R14.
Ano: 2009
URL: http://purl.umn.edu/49473

Deforestation in Indonesia: A Household Level Analysis of the Role of Forest Dependence and Poverty
Provedor de dados: 31
Autores: Purnamasari,   Ririn S.
Paper removed for revision at request of author - 09/20/07.
Tipo: Conference Paper or Presentation
Palavras-chave: Tropical deforestation; Agricultural extensification; Land use change; Food Security and Poverty; Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/10353

Population Growth and Land Use Dynamics along Urban–Rural Gradient
Provedor de dados: 31
Autores: Polyakov,   Maksym; Zhang,   Daowei.
In this study we apply a spatial conditional logit model to determine factors influencing land cover change in three contiguous counties in West Georgia between 1992 and 2001 using point (pixel) based observations of land characteristics. We found that accessibility to population and population growth affect not only development of rural lands and transition between agricultural and forestry uses, but also influence changes between forest types. The model could be used to project land use–land cover change at watershed or subwatershed level and thus serve as a valuable tool for county and city planners.
Tipo: Journal Article
Palavras-chave: Conditional logit; Land use change; Population gravity index; Spatial lag; Agribusiness; Labor and Human Capital; Land Economics/Use; Q15; Q23; R14.
Ano: 2008
URL: http://purl.umn.edu/47205

The Effect of Climate Change on Land Use and Wetlands Conservation in Western Canada: An Application of Positive Mathematical Programming
Provedor de dados: 31
Autores: Withey,   Patrick; van Kooten,   G. Cornelis.
This study examines the impact of climate change on land use in the Prairie Pothole Region of Western Canada, with particular emphasis on how climate change will impact wetlands. A multi-region Positive Mathematical Programming model calibrates land use in the area to observed acreage in 2006. Policy simulations for both climate effects as well as the effects of biofuel policies determine how climate change will affect land use and wetlands. Given that the model calibrates to observed acreage, the policies provide a realistic view of how land use might change from current levels, given the effects of climate change. Results indicate that climate change could decrease wetlands in this area by as much as 50 percent. The effect will be very different...
Tipo: Working or Discussion Paper
Palavras-chave: Positive mathematical programming; Wetlands conservation; Land use change; Climate change; Biofuels; Prairie pothole region; Environmental Economics and Policy; C02; C63; Q15; Q54; Q57; Q24; Q25.
Ano: 2011
URL: http://purl.umn.edu/107095

Determinants of Forestry Investment and Extent of Forestry Expansion by Smallholders in New Zealand
Provedor de dados: 31
Autores: Dhakal,   Bhubaneswor; Bigsby,   Hugh R.; Cullen,   Ross.
While there has been a large increase in investment in plantation forestry in New Zealand by smallholders during the past decade, there are still many smallholders who have chosen not to become involved in this land use or who are using only a portion of their potentially planted land for forestry.  To understand why this is the case, this paper studies two issues, the differences between those who have and have not established plantation forests, and the factors that explain the proportion of land used in forestry by small landholders who have identified that they have potentially plantable land.  Land used for forest plantations is treated as a two-step decision process, where first a landowner must decide whether they would consider planting trees at...
Tipo: Journal Article
Palavras-chave: Forestry investment; Land use change; Non-industrial forests; Double hurdle model; Land Economics/Use; Q15; Q23.
Ano: 2008
URL: http://purl.umn.edu/50016

Modelling Land Use in Rural New Zealand
Provedor de dados: 31
Autores: Olssen,   Alex; Kerr,   Suzi.
Regional Councils are primarily responsible for environmental management, as specified in the Resource Management Act (RMA), 1991. The Local Government Act 2002 has an integrative component, requiring consideration of social, economic, environmental and cultural well-being of their communities. These two Acts are interesting, as their combination is shaping new governance structures within New Zealand. Different types of policy instruments are available to Regional Councils while carrying out their functions: regulatory, economic and voluntary. The 1990s are characterized by ‘first generation Plans’ of the RMA, which were highly rule focused. In the 2000s a marked shift occurred, mainstreaming ‘community’ and participative approaches to policy. This...
Tipo: Conference Paper or Presentation
Palavras-chave: Land use change; New Zealand; National; Time series; Agricultural and Food Policy; Land Economics/Use; Production Economics; Q15; Q24.
Ano: 2011
URL: http://purl.umn.edu/115413

LAND USE CHANGE AND COMPETITION IN THE SOUTH
Provedor de dados: 31
Autores: Reynolds,   John E.
The amount of land in urban and other special uses increased more than 50 percent since the 1960s in the South.  Rural land converted to urban uses is directly related to increases in population in the South.  Urban land-use coefficients were estimated to provide a measure of the amount of land converted to urban uses per person added to the population base.  These coefficients indicate that from 1974 to 1987 two-thirds to three fourths of an acre of land was converted to urban uses for each person added to the population base.  At this rate, about 12.6 million acres are expected to be converted to urban use in the South during the next two decades.
Tipo: Journal Article
Palavras-chave: Land use change; Rural land use; Rural-urban conflict; Urban land conversion; Land Economics/Use.
Ano: 2001
URL: http://purl.umn.edu/15023

Land Use Change and Ecosystem Valuation in North Georgia
Provedor de dados: 31
Autores: Ngugi,   Daniel; Mullen,   Jeffrey D.; Bergstrom,   John C.
A model of land allocation at the aggregate watershed level was developed assuming profit/net benefit maximization under risk neutrality. The econometric land use model was analyzed as an equation by equation SURE model as all the independent variables were the same for both equations. In analyzing effect of land use change on water quality, we took year 2005 as our baseline and postulated three land use scenarios. We applied Benefit Transfer techniques to value water quality changes resulting from land use change and estimated lower bounds for WTP to improve water quality to meet the FCB criterion for drinking water supply and fishing waters and BOD (DO) criteria for fishing waters. Water quality modeling revealed that land use change would result in...
Tipo: Conference Paper or Presentation
Palavras-chave: Ecosystem; Economic value; North Georgia; Land use; Land use change; Fish; Water quality; Structural time series; Willingness to pay; Benefit transfer; Forecasting; Vector autoregression; Upper Chattahoochee River; Environmental Economics and Policy; Land Economics/Use.
Ano: 2008
URL: http://purl.umn.edu/6119

Large-Scale Modelling of Global Food Security and Adaptation under Crop Yield Uncertainty
Provedor de dados: 31
Autores: Fuss,   Sabine; Havlik,   Petr; Szolgayova,   Jana; Schmid,   Erwin; Obersteiner,   Michael.
Concerns about future food security in the face of volatile and potentially lower yields due to climate change have been at the heart of recent discussions on adaptation strategies in the agricultural sector. While there are a variety of studies trying to quantify the impact of climate change on yields, some of that literature also acknowledges the fact that these estimates are subject to substantial uncertainty. The question arises how such uncertainty will affect decision-making if ensuring food security is an explicit objective. Also, it will be important to establish, which options for adaptation are most promising in the face of volatile yields. The analysis is carried out using a stochastic version of the Global Biosphere Management Model (GLOBIOM)...
Tipo: Conference Paper or Presentation
Palavras-chave: Food security; Food price volatility; Optimization under uncertainty; Adaptation; Land use change; Crop Production/Industries; Food Security and Poverty.
Ano: 2011
URL: http://purl.umn.edu/114347

ANALYZING TRADE IMPLICATIONS OF U.S. BIOFUELS POLICIES IN A GENERAL EQUILIBRIUM FRAMEWORK
Provedor de dados: 31
Autores: Birur,   Dileep K.; Beach,   Robert H.
As the biofuels are emerging as promising alternative transportation fuels across the world, they also offer huge potential for international trade in biofuels. A number of trade barriers such as import tariffs and domestic support have limited the scope for trade in biofuels. The purpose of this study is to analyze the implications of U.S. biofuel mandates, subsidies and import tariffs on global trade and welfare. We utilize the GTAP-BIO model, which was developed as a customized version of the Global Trade Analysis Project (GTAP) model capable of analyzing domestic and trade policy issues associated with biofuels (Birur, 2010). We supplement this model with updated and detailed sectoral level information on feedstock crops, different types of first and...
Tipo: Conference Paper or Presentation
Palavras-chave: Biofuels; Computable General Equilibrium; Land use change; Land Economics/Use; Resource /Energy Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/103996

Analysis of Characteristics of Spatio-temporal Evolution of Land Use in Inhabited Islands of Pearl River Estuary
Provedor de dados: 31
Autores: Li,   Tao; Gao,   Yi; Li,   Xiao-min; Li,   Tuan-jie; Li,   Xiao-ming; Yang,   Qin.
Abstract Under the support of the remote sensing and geographical information system (GIS) techniques, we acquire the land use data in 1990 and 2008 regarding 6 inhabited islands, namely Longxue Island, Hengmen Island, Weiyuan Island, Oi'ao Island, Hengqin Island and Gaolan Island in Pearl River Estuary . By using dynamic degree of land use, land use change intensity, relative change rate and other indicators, we conduct quantitative description, and thus quantitatively and qualitatively analyze characteristics of temporal evolution and law of spatial pattern change concerning land use of each island. The study indicates that in the period 1990 2008, the area of construction land and water in 6 islands increased, while the area of agricultural land and...
Tipo: Article
Palavras-chave: Land use change; Remote sensing; Spatio-temporal evolution; Pearl River Estuary; Inhabited islands; China; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/122942

Global Land Use Changes and Consequent CO2 Emissions due to US Cellulosic Biofuel Program: A Preliminary Analysis
Provedor de dados: 31
Autores: Taheripour,   Farzad; Tyner,   Wallace E.
The economic and land use consequences of US biofuel programs and their contributions to GHG emissions have been the focal point of many debates and research studies in recent years.  However, most of these studies focused on the land use emissions due to the first generation of biofuels such as corn ethanol, sugarcane ethanol, and biodiesel (e.g. [1, 2] [3, 4]). A quick literature review indicates that only a few attempts have been made to estimate these emissions for the second generation of biofuels which convert cellulosic materials into liquid fuels. Gurgel et al. [5] have used a highly aggregated computational model (CGE) to evaluate land use consequences of producing biofuels from biomass feedstock. This model does not distinguish between the first...
Tipo: Conference Paper or Presentation
Palavras-chave: Biofuels; Cellullosic feedstocks; Land use change; Resource /Energy Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/103559

Integrated assessment of the environmental, economic and social impacts of land use change using a GIS format – the CLUES model
Provedor de dados: 31
Autores: Harris,   Simon; Elliott,   Sandy; McBride,   Graham; Shankar,   Ude; Quinn,   John; Wheeler,   David; Wedderburn,   Liz; Hewitt,   Allan; Gibb,   Robert; Parfitt,   Roger; Clothier,   Brent; Green,   Steve; Munguia,   Oscar Montes de Oca; Dake,   Chris K.G.; Rys,   Gerald.
The CLUES model is an integrated catchment based model that designed to assist policy makers in understanding the implications of land use scenarios for water quality and a range of other indicators. CLUES integrates a number of existing models from several research providers, including SPARROW (catchment hydrology), OVERSEER and SPASMO (nutrient losses), ENSUS (nitrate leaching risk), and a socioeconomic model. These are combined in a GIS framework which allows scenarios of land use to be assessed in a spatial manner. Regional council staff have been trained in its use, and the model is under ongoing development in response to feedback from users. This paper discusses the overall framework of the CLUES model, and discusses in greater depth the...
Tipo: Conference Paper or Presentation
Palavras-chave: Sustainability indicators; Catchment models; Water quality; Economic impacts; Land use change; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Land Economics/Use; Political Economy.
Ano: 2009
URL: http://purl.umn.edu/97166

Exploring natural resource management tradeoffs in an agricultural landscape - an application of the MOSAIC model.
Provedor de dados: 31
Autores: Lawson,   Kenton; Hill,   Christine M.; Hodges,   Andrew; Jacobs,   Brent.
We describe a landscape scale non-linear discrete choice spatial optimisation model for identifying cost-effective strategies for achieving environmental goals. Spatial heterogeneity and configuration issues such as fencing costs, patch sizes and network linkages are explicitly accounted for and quasi-optimal allocations are determined using simulated annealing. Applications of the model being developed with New South Wales Catchment Management Authorities are discussed. These focus on targeting investments in revegetation to control dryland salinity and erosion and provide biodiversity benefits whilst minimising direct and opportunity costs. We compare our approach with alternate investment approaches.
Tipo: Conference Paper or Presentation
Palavras-chave: Natural resource management; Cost effectiveness; Land use change; Multicriteria; Spatial optimisation; Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/10374

Soil Organic Matter Quality in Jatropha spp. Plantations in Different Edaphoclimatic Conditions
Provedor de dados: 90
Autores: Freitas,Rita de Cássia Alves de; Popin,Gustavo Vicentini; Milori,Débora Marcondes Bastos Pereira; Signor,Diana; Drumond,Marcos Antônio; Cerri,Carlos Eduardo Pellegrino.
ABSTRACT The substitution of native vegetation by agricultural ecosystems can change the quantity and quality of soil organic matter (SOM), and the intensity of these changes depends on the soil type, climate, and land use. The objective of this study was to evaluate the quality of organic matter in chronosequences of Jatropha cultivation in contrasting soil and climatic conditions. Soil samples were evaluated at depths of 0.00-0.10, 0.20-0.30, and 0.80-1.00 m in chronosequences located in Planaltina, Distrito Federal (Cerrado-Pasture-Jatropha), Dourados, Mato Grosso do Sul (Atlantic Forest-Corn-Jatropha), and Araripina, Pernambuco (Caatinga-Jatropha). To assess SOM quality, we determined C contents in the SOM fractions, C stocks, the carbon management...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Land use change; Soil carbon fractionation; Carbon management index; Laser-induced fluorescence spectroscopy; Microbial biomass.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100508

Modeling changes in organic carbon stocks for distinct soils in southeastern brazil after four eucalyptus rotations using the century model
Provedor de dados: 90
Autores: Lima,Augusto Miguel Nascimento; Silva,Ivo Ribeiro da; Stape,Jose Luis; Mendonça,Eduardo Sá; Novais,Roberto Ferreira; Barros,Nairam Félix de; Neves,Júlio César Lima; Paul,Keryn; Schulthais,Fernanda; Polglase,Phill; Raison,John; Soares,Emanuelle Mercês Barros.
Soil organic matter (SOM) plays an important role in carbon (C) cycle and soil quality. Considering the complexity of factors that control SOM cycling and the long time it usually takes to observe changes in SOM stocks, modeling constitutes a very important tool to understand SOM cycling in forest soils. The following hypotheses were tested: (i) soil organic carbon (SOC) stocks would be higher after several rotations of eucalyptus than in low-productivity pastures; (ii) SOC values simulated by the Century model would describe the data better than the mean of observations. So, the aims of the current study were: (i) to evaluate the SOM dynamics using the Century model to simulate the changes of C stocks for two eucalyptus chronosequences in the Rio Doce...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil organic matter; Land use change; Reforestation.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000300018

Simulation of soil organic carbon changes in Vertisols under conservation tillage using the RothC model
Provedor de dados: 63
Autores: Molina,Lucila González; Moreno Pérez,Esaú del C.; Pérez,Aurelio Baéz.
ABSTRACT The purpose of this study was to determine the measured and simulated rates of soil organic carbon (SOC) change in Vertisols in short-term experiments when the tillage system is changed from traditional tillage (TT) to conservation tillage (CT). The study was conducted in plots in four locations in the state of Michoacán and two locations in the state of Guanajuato. In the SOC change simulation, the RothC-26.3 carbon model was evaluated with different C inputs to the soil (ET1-ET5). ET was the measured shoot biomass (SB) plus estimated rhizodeposition (RI). RI was tested at values of 10, 15, 18, 36 and 50 % total biomass (TB). The SOC changes were simulated with the best trial where ET3 = SB + (0.18*TB). Values for model efficiency and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Land use change; Conservation agriculture; Carbon sequester.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000300235

Replacement of native vegetation alters the soil microbial structure in the Pampa biome
Provedor de dados: 63
Autores: Suleiman,Afnan Khalil Ahmad; Pylro,Victor Satler; Roesch,Luiz Fernando Wurdig.
ABSTRACT: Land use change is one of the the major factors related to soil degradation and alterations in soil microbial diversity and structure. In this study, we aimed to evaluate the microbial shifts caused by deforestation of a small area of a natural forest for the introduction of a pasture in the Brazilian Pampa. The microbial abundance and structure were evaluated by molecular approaches based on quantitative Polymerase Chain Reaction (qPCR) and Ribosomal Intergenic Spacer Analysis (RISA). The microbial communities did not present significant quantitative differences, but the environmental impact caused by deforestation changed the structure of the bacterial and archaeal communities. Taking into account the percentage of shared OTUs (operational...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: RISA; Soil quality; Land use change; Soil microbial ecology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000100077

Changes in population and land use over time in the Ecuadorian Amazon
Provedor de dados: 36
Autores: Bilsborrow,Richard E.; Barbieri,Alisson F.; Pan,William.
This paper draws upon a detailed longitudinal survey of households living on agricultural plots in the northern three provinces of the Ecuadorian Amazon, the principal region of colonization by migrants in Ecuador since the 1970s. Following the discovery of petroleum in 1967 near what has subsequently come to be the provincial capital and largest Amazonian city of Lago Agrio, oil companies built roads to lay pipelines to extract and pump oil across the Andes for export. As a result, for the past 30 years over half of both Ecuador's export earnings and government revenues have come from petroleum extracted from this region. But the roads also facilitated massive spontaneous in-migration of families from origin areas in the Ecuadorian Sierra, characterized...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecuadorian Amazon; Agricultural colonization; Population change; Land use change; Migration.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672004000400015

Reconstructing historical forest cover change in the Lower Amazon floodplains using the LandTrendr algorithm
Provedor de dados: 36
Autores: FRAGAL,Everton Hafemann; SILVA,Thiago Sanna Freire; NOVO,Evlyn Márcia Leão de Moraes.
ABSTRACTThe Amazon várzeas are an important component of the Amazon biome, but anthropic and climatic impacts have been leading to forest loss and interruption of essential ecosystem functions and services. The objectives of this study were to evaluate the capability of the Landsat-based Detection of Trends in Disturbance and Recovery (LandTrendr) algorithm to characterize changes in várzeaforest cover in the Lower Amazon, and to analyze the potential of spectral and temporal attributes to classify forest loss as either natural or anthropogenic. We used a time series of 37 Landsat TM and ETM+ images acquired between 1984 and 2009. We used the LandTrendr algorithm to detect forest cover change and the attributes of "start year", "magnitude", and "duration"...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wetlands; Flooded forest; Land use change; Monitoring; Landsat.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000100013

Effects of land use conversion on soil aggregate stability and organic carbon in different soils
Provedor de dados: 115
Autores: Ćirić,Vladimir; Manojlović,Maja; Belić,Milivoj; Nešić,Ljiljana; Šeremešić,Srdan.
Aggregate stability is an important factor of the soil functioning. Greater aggregate stability leads to greater soil organic carbon (SOC) preservation, while SOC acts as a key cementing agent in aggregation processes. The objective of this study was to investigate the effects of native vegetation conversion in soil aggregate stability and SOC concentration. The investigation was conducted in the Vojvodina Province, Serbia, in July 2009. Undisturbed soil samples were taken from Haplic Chernozem, Haplic Fluvisol and Gleyic Vertisol, at a depth ranging from 0 to 20 cm. A completely randomized experimental design was used with three replicates. Each soil type was considered under treatments 1) cropland &amp;gt;100 years, 2) native meadow and 3) native...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aggregate stability; Soil organic carbon; Land use change; Soil type; Soil structure.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000600002

Where is sugarcane cropping expanding in the brazilian cerrado, and why? A case study
Provedor de dados: 42
Autores: ARRUDA,MURILO R. DE; GILLER,KEN E.; SLINGERLAND,MAJA.
ABSTRACT Sugarcane growing area in Brazil sharply expanded between 2000 and 2010 due to the increasing world demand for sugar and ethanol. Since this expansion of sugarcane is said to occur in areas covered by degraded pastures, it is likely not threatening the environment or food production. In order to verify this assumption, we investigate at farm and field levels which types of land use sugarcane cropping replaced between 2005 and 2010 and the reasons for farmers shifting or not shifting to sugarcane, as a case study in two counties in the state of Goiás. Within the studied period, sugarcane cropping expansion was related to large farms, lower risk perceived by farmers, and higher profitability compared with soybean and beef cattle-raising. For...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Land use change; Dairy farming; Pastures; Cropping; Small farmers.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502485

Comparing how land use change impacts soil microbial catabolic respiration in Southwestern Amazon
Provedor de dados: 58
Autores: Mazzetto,Andre Mancebo; Feigl,Brigitte Josefine; Cerri,Carlos Eduardo Pellegrino; Cerri,Carlos Clemente.
Abstract Land use changes strongly impact soil functions, particularly microbial biomass diversity and activity. We hypothesized that the catabolic respiration response of the microbial biomass would differ depending on land use and that these differences would be consistent at the landscape scale. In the present study, we analyzed the catabolic response profile of the soil microbial biomass through substrate-induced respiration in different land uses over a wide geographical range in Mato Grosso and Rondônia state (Southwest Amazon region). We analyzed the differences among native areas, pastures and crop areas and within each land use and examined only native areas (Forest, Dense Cerrado and Cerrado), pastures (Nominal, Degraded and Improved) and crop...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon region; Land use change; Catabolic profile; Microbial communities.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000100063

Experimental evaluation of sediment yield in the first year after replacement of pastures by sugarcane
Provedor de dados: 118
Autores: Youlton,Cristian; Bragion,Ana Paula; Wendland,Edson.
C. Youlton, A. P. Bragion, and E. Wendland. 2016. Experimental evaluation of sediment yield in the first year after replacement of pastures by sugarcane. Cien. Inv. Agr. 43(3): 374383. Sugarcane cultivation has expanded in south-eastern Brazil in the last decade, mainly for biofuel (ethanol) production. This expansion has occurred on land that was originally covered with pasture and used for livestock production. The purpose of this study is to experimentally determine the impact on runoff and erosion produced by replacing pasture with sugarcane. Runoff plots of 100 m² were established at a farm in Itirapina, Sao Paulo (SP), Brazil, on a hill with a 9% slope and sandy soil. An 18-year-old pasture and a new sugarcane plantation were studied. The degrees of...
Tipo: Journal article
Palavras-chave: Land use change; Runoff; Sediment granulometry; Soil erosion.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000300005

MICROMORPHOLOGY AND PEDOGENESIS OF MOUNTAINOUS INCEPTISOLS IN THE MANTIQUEIRA RANGE (MG)
Provedor de dados: 64
Autores: Pinto,Leandro Campos; Zinn,Yuri Lopes; Mello,Carlos Rogério de; Owens,Phillip Ray; Norton,Lloyd Darrell; Curi,Nilton.
ABSTRACTUnderstanding soil formation processes across different landscapes is needed to predict how soil properties will respond to land use change. This study aimed to characterize mountainous Inceptisols (Cambisols) under high altitude subtropical climate in southeastern Brazil, by soil physical, chemical and micromorphological analyses, under native forest and pasture. The soil under pasture had a greater bulk density than under forest, resulting in a severe reduction of macroporosity. At two depths, coarse quartz grains are angular, suggesting absence of transportational processes, thus confirming an autochthonous pedogenesis from the underlying gneissic rock. Most feldspars were weathered beyond recognition, but mineral alteration was commonly seen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil formation; Soil microstructure; Land use change; Forest soils.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000500455