Consulta: subjectFacets:"Land degradation"
Registros recuperados: 26
Data/hora: 12/06/2024 11:25:50

The relationship between ecological restoration and the ecosystem services concept
Provedor de dados: 7
Autores: Alexander, Sasha; University of Western Australia; sashaalexander108@gmail.com; Aronson, James; Restoration Ecology Group, Centre d'Ecologie Fonctionnelle et Evolutive (CNRS-UMR 5175); Center for Conservation and Sustainable Development, Missouri Botanical Garden; ja42014@gmail.com; Whaley, Oliver; Royal Botanic Gardens, Kew; o.whaley@kew.org; Lamb, David; School of Agriculture and Food Science, The University of Queensland; david.lamb@uq.edu.au.
Ecological restoration and the mainstreaming of the concept of ecosystem services will be critical if global society is to move toward sustainability. Conference of the Parties 21 (COP21) of the United Nations Framework Convention on Climate Change and COP12 of the Convention on Biological Diversity should help foster support for vastly increased investment in the better management and restoration of natural capital. Large-scale restoration demonstrably improves ecological functioning to sustain both biodiversity and human well-being. However, much progress is needed to improve the effectiveness and cost efficiency of any restoration. The ecosystem services concept provides a framework for identifying the types of restorative interventions needed to target...
Tipo: Peer-Reviewed article
Palavras-chave: Climate change; Ecosystem services; Land degradation; Land use; Large-scale ecological restoration; Restoring natural capital  rural communities  sustainable development.
Ano: 2016

How does the context and design of participatory decision making processes affect their outcomes? Evidence from sustainable land management in global drylands
Provedor de dados: 7
Autores: de Vente, Joris; Spanish National Research Council (CEBAS-CSIC); joris@cebas.csic.es; Reed, Mark S.; Institute for Agri-Food Research and Innovation and Centre for Rural Economy, School of Agriculture, Food and Rural Development, Newcastle University; mark.reed@newcastle.ac.uk; Stringer, Lindsay C.; Sustainability Research Institute, School of Earth and Environment, University of Leeds; l.stringer@leeds.ac.uk; Valente, Sandra; Centre for Environmental and Marine Studies (CESAM), Department of Environment and Planning, University of Aveiro; sandra.valente@ua.pt.
Although the design of participatory processes to manage social-ecological systems needs to be adapted to local contexts, it is unclear which elements of process design might be universal. We use empirical evidence to analyze the extent to which context and process design can enable or impede stakeholder participation and facilitate beneficial environmental and social outcomes. To explore the role of design and minor variations in local context on the outcomes of participatory processes, we interviewed participants and facilitators from 11 case studies in which different process designs were used to select sustainable land management options in Spain and Portugal. We analyzed interview data using quantitative and qualitative approaches. Results showed that...
Tipo: Peer-Reviewed Reports
Palavras-chave: Drylands; Environmental management; Land degradation; Social learning; Stakeholder engagement; Sustainable land management.
Ano: 2016

Drivers of Ecological Restoration: Lessons from a Century of Restoration in Iceland
Provedor de dados: 7
Autores: Arad&amp;oacute;ttir, &amp;Aacute;sa L.; Faculty of Environmental Sciences, Agricultural University of Iceland; asa@lbhi.is; Petursdottir, Thorunn; Soil Conservation Service of Iceland; Institute for Environment and Sustainability (IES), European Commission, Joint Research Centre (JRC); thorunn.petursdottir@land.is; Halldorsson, Gudmundur; Soil Conservation Service of Iceland; gudmundur.halldorsson@land.is; Svavarsdottir, Kristin; Soil Conservation Service of Iceland; kristin.svavarsdottir@land.is; Arnalds, Olafur; Faculty of Environmental Sciences, Agricultural University of Iceland; oa@lbhi.is.
Tipo: Peer-Reviewed Reports
Palavras-chave: Birch woodlands; Drivers; Ecological restoration; Heathlands; Land degradation; Revegetation; Soil erosion; Wetlands.
Ano: 2013

Ecosystem Services, Land-Cover Change, and Stakeholders: Finding a Sustainable Foothold for a Semiarid Biodiversity Hotspot
Provedor de dados: 7
Autores: Reyers, Belinda; Natural Resources and the Environment, Council for Scientific and Industrial Research; breyers@csir.co.za; Cowling, Richard M.; Department of Botany, Nelson Mandela Metropolitan University;; Egoh, Benis N.; Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University;; Le Maitre, David C.; Natural Resources and the Environment, Council for Scientific and Industrial Research;; Vlok, Jan H. J.; Regalis Environmental Services;.
Land-cover change has been identified as one of the most important drivers of change in ecosystems and their services. However, information on the consequences of land cover change for ecosystem services and human well-being at local scales is largely absent. Where information does exist, the traditional methods used to collate and communicate this information represent a significant obstacle to sustainable ecosystem management. Embedding science in a social process and solving problems together with stakeholders are necessary elements in ensuring that new knowledge results in desired actions, behavior changes, and decisions. We have attempted to address this identified information gap, as well as the way information is gathered, by quantifying the...
Tipo: Peer-Reviewed Reports
Palavras-chave: Carbon; Grazing; Human well-being; Land degradation; Ostriches; Tourism; Trade-offs; Water.
Ano: 2009

Oak Persistence in Mediterranean Landscapes: The Combined Role of Management, Topography, and Wildfires
Provedor de dados: 7
Autores: Holmgren, Milena; Resource Ecology Group, Wageningen University; milena.holmgren@wur.nl; Mohren, Godefridus M.J.; Forest Ecology and Forest Management Group, Wageningen University; frits.mohren@wur.nl.
Mediterranean ecosystems have been shaped by a history of human and ecological disturbances. Understanding the dynamics of these social-ecological systems requires an understanding of how human and ecological factors interact. In this study, we assess the combined role of management practices and biophysical variables, i.e., wildfire and topography, to explain patterns of tree persistence in a cork oak  (Quercus suber L.) landscape of southern Portugal. We used face-to-face interviews with landowners to identify the management practices and the incentives that motivated them. We used aerial photographs and a Geographic Information System (GIS) to classify vegetation patch-type transitions over a period of 45 years (1958-2002) and logistic regression to...
Tipo: Peer-Reviewed Reports
Palavras-chave: Agroforestry system; Alternative ecosystem state; Cistus ladanifer; Land degradation; Mediterranean; Portugal; Shrub encroachment; Succession; Quercus suber; Vegetation transition.
Ano: 2010

Plantio de açaizeiro consorciado com bananeira: uma alternativa de renda para o agricultor familiar.
Provedor de dados: 14
Autores: LUNZ, A. M. P.; ALMEIDA, U. O. de; ANDRADE NETO, R. de C.
bitstream/item/159330/1/26309.pdf
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Bananos; Cultivo mixto; Regeneración natural.; Degradación de la tierra; Explotación agrícola familiar; Agricultura familiar; Consorciação de cultura; Açaí; Banana; Musa sp; Deterioração do solo; Regeneração natural; Plátano.; Family farms; Mixed cropping; Bananas; Land degradation; Natural regeneration; Euterpe precatoria.
Ano: 2016
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1068948

Desempenho silvicultural de algumas espécies nativas da Caatinga, na Chapada do Araripe, Pernambuco.
Provedor de dados: 14
Autores: DRUMOND, M. A.; OLIVEIRA, V. R. de; PORTO, D. D.; TAVARES, J. A.; CALIXTO JÚNIOR, J. A.
A região do Araripe tem consumido cada vez mais a matéria prima de base florestal, especialmente, vegetação nativa, visando atender a demanda energética, para o benefi-ciamento e transformação da gipsita. O objetivo deste trabalho foi avaliar o desempenho silvicultural de algumas espécies nativas na Chapada do Araripe. O experimento foi implantado em área da Estação Experimental do Instituto Agronômico de Pernambuco (IPA) em Araripina-PE. A área experimental foi previamente arada e gradeada, tendo sido incorporada, ao solo, 2,0 t ha?1 de calcário dolomítico. Foi feita uma adubação de fundação de 100 g cova?1 com NPK (10-80-30). As mudas foram plantadas com altura variando de 25 a 30 cm. O plantio no campo foi feito em espaçamento de 4 x 4m, com parcelas de...
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Bioma Caatinga; Chapada do Araripe; Polo gesseiro.; Piptadenia Obliqua; Caatinga; Espécie Nativa; Floresta; Vegetação Nativa; Vegetação; Degradação Ambiental; Myracrodruon Urundeuva; Mimosa; Silvicultura; Desmatamento.; Environmental degradation.; Vegetation types; Land degradation.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1130092

Prevention of advancing degradation and recovery of degraded lands.
Provedor de dados: 14
Autores: ANDRADE, A. G. de; FREITAS, P. L. de.
This chapter presents an overview on the main technological contributions of Embrapa and partners to halt land degradation, accelerated erosive processes, desertification, sanding, salinization, and to restore degraded lands, as established in target 15.3 (United Nations, 2018): By 2030, combat desertification, restore degraded land and soil, including land affected by desertification, drought and floods, and strive to achieve a land degradation-neutral world.
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Desertificação; Degradação Ambiental; Erosão; Desertification; Land degradation; Accelerated erosion.
Ano: 2019
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1114511

Land Degradation in Ethiopia: What do Stoves Have to Do with it?
Provedor de dados: 31
Autores: Gebreegziabher,   Zenebe; van Kooten,   G. Cornelis; van Soest,   Daan P.
Land degradation is a particularly vexing problem in developing countries; as forests are depleted, crop residues and dung are used for fuel, which degrades cropland. In Ethiopia, the government encourages tree planting and adoption of energy efficient stove technologies to mitigate land degradation. We use data from 200 households in Tigrai, Ethiopia to examine the adoption of new stove technologies. Adoption is an economic decision, related to savings in time spent collecting fuel and cooking, and cattle required for everyday purposes. Results indicate adopters of efficient stoves reduce respective wood and dung use by 68 and 316 kg per month.
Tipo: Working or Discussion Paper
Palavras-chave: Land degradation; Technology adoption; Africa; Ethiopia; Environmental Economics and Policy; Land Economics/Use; Resource /Energy Economics and Policy; O55; Q24; Q55.
Ano: 2005
URL: http://purl.umn.edu/37026

LINKING LAND QUALITY, AGRICULTURAL PRODUCTIVITY, AND FOOD SECURITY
Provedor de dados: 31
Autores: Wiebe,   Keith D.
Land quality and land degradation affect agricultural productivity, but quantifying these relationships has been difficult. Data are limited, and impacts are sensitive to the choices that farmers make. Summarizing new research by economists, soil scientists, and geographers, this report explores the extent to which land quality and land degradation affect agricultural productivity, how farmers' responses to land degradation are influenced by economic, environmental, and institutional factors, and whether land degradation poses a threat to productivity growth and food security. Results suggest that land degradation does not threaten food security at the global scale, but does pose problems in areas where soils are fragile, property rights are insecure, and...
Tipo: Report
Palavras-chave: Land quality; Land degradation; Soil erosion; Agricultural productivity; Food security; Food Security and Poverty; Land Economics/Use; Productivity Analysis.
Ano: 2003
URL: http://purl.umn.edu/34073

Livestock and water interactions in mixed crop-livestock farming systems of Sub-Saharan Africa: Interventions for improved productivity
Provedor de dados: 31
Autores: Descheemaeker,   Katrien; Amede,   Tilahun; Haileslassie,   Amare.
Focusing on mixed crop-livestock farming systems of sub-Saharan Africa, this review brings together the available knowledge in the various components of the livestock and water sectors. Through an analysis of livestock-water interactions, promising strategies and interventions to improve Livestock Water Productivity are proposed. In the biophysical domain, the numerous interventions relate to feed, water and animal management. These are interlinked with interventions in the socio-political-economic domain. The paper identifies critical research and development gaps in terms of methodologies for quantifying water productivity and integrating different scales, and also in terms of institutions and policies.
Tipo: Working or Discussion Paper
Palavras-chave: Farming systems; Livestock; Water productivity; Water scarcity; Land degradation; Feed production; Fodder; Grazing systems; Animal production; Food production; Policy; Crop Production/Industries; Farm Management; Livestock Production/Industries; Production Economics.
Ano: 2009
URL: http://purl.umn.edu/91868

Perception de la Dégradation des Terres et Adoption des Technologies de Conservation des Eaux et des Sols au Nord du Burkina Faso : le cas du Zaï et des Cordons Pierreux
Provedor de dados: 31
Autores: Kinane,   Modeste  L.; Kone,   Michel; Sidibe,   Amadou.
This study is based on data collected from 141 family-type farms in the Yatenga province in Burkina Faso. A probit approach is used to analyze the effect of perception of land degradation and other factors on the adoption of zaï and stone rows. The results of the estimation show that the availability of organic matter from small ruminants is determinant for the adoption of both zaï and stone rows. Although most of farmers are aware of the causes and consequences of land degradation, this factor does not significantly impact on farmers’ decision to invest in SWC measures. Opportunities do exist for making more efficient use of local sources of nutrients, such as small ruminants’ organic matter in combination with locally accepted SWC measures. This may...
Tipo: Conference Paper or Presentation
Palavras-chave: Land degradation; Technology adoption; Stone rows; Zai; Yatenga; Community/Rural/Urban Development; Consumer/Household Economics; Environmental Economics and Policy; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Labor and Human Capital; Land Economics/Use; Marketing; Research and Development/Tech Change/Emerging Technologies.
Ano: 2008
URL: http://purl.umn.edu/52192

The economics of land degradation and technological change: a case study in Vietnam
Provedor de dados: 31
Autores: Clayton,   Helena; Brennan,   Donna C.
This paper explores the economics of land degradation in the rice-shrimp system in the Mekong Delta of Vietnam. A bioeconomic NPV model was developed to evaluate and compare the long-term benefits of alternative production choices and farm technologies. There is an alternative rice-shrimp technology emerging in Vietnam that does not have the same land degrading impacts as the 'traditional' system, however the high capital outlay and risk associated with such technology presents its own problems. In the paper the economic incentives for adoption of the non-land degrading rice-shrimp technology are explored. Conclusions are drawn with regard to the opportunity cost of land degradation and technological change. Some conclusions are also provided on the policy...
Tipo: Conference Paper or Presentation
Palavras-chave: Land degradation; Technological change; Vietnam; Environmental Economics and Policy.
Ano: 2003
URL: http://purl.umn.edu/57845

STRATEGIES TO INCREASE AGRICULTURAL PRODUCTIVITY AND REDUCE LAND DEGRADATION: EVIDENCE FROM UGANDA
Provedor de dados: 31
Autores: Pender,   John L.; Nkonya,   Ephraim M.; Jagger,   Pamela; Sserunkuuma,   Dick; Ssali,   Henry.
This paper estimates a structural econometric model of household decisions regarding income strategies, participation in programs and organizations, crop choices, land management, and labor use, and their implications for agricultural production and land degradation; based upon a survey of over 450 households and their farm plots in Uganda.  The results generally support the Boserupian model of population-induced agricultural intensification, but do not support the "more people-less erosion" hypothesis, with population pressure found to contribute to erosion in the densely populated highlands. Agricultural technical assistance programs have location-specific impacts on agricultural production and land degradation, contributing to higher value of crop...
Tipo: Conference Paper or Presentation
Palavras-chave: Agricultural productivity; Land degradation; Agricultural development strategies; Uganda; Farm size-productivity; Land Economics/Use; Productivity Analysis.
Ano: 2003
URL: http://purl.umn.edu/25816

Land Degradation in Ethiopia: What Do Stoves Have To Do With It?
Provedor de dados: 31
Autores: Gebreegziabher,   Zenebe; van Kooten,   G. Cornelis; van Soest,   Daan P.
In Ethiopia deforestation is a major problem and many peasants have switched from fuelwood to dung for cooking and heating purposes, thereby damaging the agricultural productivity of cropland. The Ethiopian government has embarked on a two-pronged policy in an effort to stem deforestation and the degradation of agricultural lands: (i) tree planting or afforestation; (ii) dissemination of more efficient stove technologies. The motivation in here is, therefore, to examine the potential of the strategy of disseminating improved stoves in the rehabilitation of agricultural and forests lands. For empirical analysis we used a dataset on cross-section of 200 farm households from the highlands of Tigrai, northern Ethiopia. We used a two-step procedure reminiscent...
Tipo: Conference Paper or Presentation
Palavras-chave: Land degradation; Technology adoption; Fuel-savings efficiency; Stoves; Ethiopia; Land Economics/Use; Q12; Q16; Q24.
Ano: 2006
URL: http://purl.umn.edu/25563

STRATEGIES FOR SUSTAINABLE AGRICULTURAL DEVELOPMENT IN THE ETHIOPIAN HIGHLANDS
Provedor de dados: 31
Autores: Pender,   John L.; Gebremedhin,   Berhanu; Benin,   Samuel; Ehui,   Simeon K.
This paper investigates the impacts of population growth, market access, agricultural credit and technical assistance programs, land policies, livelihood strategies and other factors on changes in land management, natural resource conditions and human welfare indicators since 1991 in the northern Ethiopian highlands, based on a survey of 198 villages. We find that population growth has contributed significantly to land degradation, poverty and food insecurity in this region. In contrast, better market access and some credit and technical assistance programs were associated with improvement (or less decline) in land quality, wealth and food security; suggesting the possibility of "win-win-win" development outcomes with appropriate interventions. Land...
Tipo: Working or Discussion Paper
Palavras-chave: Land degradation; Sustainable agriculture; Population pressure; Ethiopian highlands; Environmental Economics and Policy; International Development.
Ano: 2001
URL: http://purl.umn.edu/16121

Impacts of Cash Crop Production on Land Management and Land Degradation: The Case of Coffee and Cotton in Uganda
Provedor de dados: 31
Autores: Pender,   John L.; Nkonya,   Ephraim M.; Kato,   Edward; Kaizzi,   Crammer; Ssali,   Henry.
We investigate the impacts of coffee and cotton production on land management and land degradation in Uganda, based on a survey of 851 households and soil measurements in six major agro-ecological zones, using matching and multivariate regression methods.  The impacts of cash crop production vary by agro-ecological zones and cropping system.  In coffee producing zones, use of organic inputs is most common on plots growing coffee with other crops (mainly bananas), and least common on mono-cropped coffee.  Both mono-cropped coffee and mixed coffee plots have lower soil erosion than other plots in coffee producing zones because of greater soil cover.  Potassium depletion is much greater on mixed banana-coffee plots.  In the cotton production zone, few land...
Tipo: Conference Paper or Presentation
Palavras-chave: Land management; Land degradation; Soil nutrient depletion; Soil erosion; Agricultural commercialization; Cash crops; Uganda; Agricultural and Food Policy; International Development; Production Economics; Resource /Energy Economics and Policy; Q13; Q16; Q17.
Ano: 2009
URL: http://purl.umn.edu/50760

Policy Options for Increasing Crop Productivity and Reducing Soil Nutrient Depletion and Poverty in Uganda
Provedor de dados: 31
Autores: Nkonya,   Ephraim M.; Pender,   John L.; Kaizzi,   Crammer; Edward,   Kato; Mugarura,   Samuel.
This study was conducted with the main objective of determining the linkages between poverty and land management practices in Uganda. The study used the 2002/03 Uganda National Household Survey (UNHS) and more focused data collected from a sub-sample of 851 households of the 2002/03 UNHS sample households. We found that farmers in Uganda deplete about 1.2 percent of the nutrient stock stored in the topsoil per year, which leads to a predicted 0.31 percent reduction in crop productivity. The value of replacing the depleted nutrients using the cheapest inorganic fertilizers is equivalent to about 20 percent of household income obtained from agricultural production. Econometric analysis of the survey results provides evidence of linkages between poverty and...
Tipo: Working or Discussion Paper
Palavras-chave: Uganda; Land degradation; Soil nutrient depletion; Poverty; Crop productivity; Natural resource management; Land management; Crop Production/Industries; Food Security and Poverty; Q15; Q57; Q51.
Ano: 2005
URL: http://purl.umn.edu/59227

Farmer management of production risk on degraded lands: the role of wheat genetic diversity in Tigray Region, Ethiopia
Provedor de dados: 31
Autores: Di Falco,   Salvatore; Chavas,   Jean-Paul; Smale,   Melinda.
This paper investigates the effects of wheat genetic diversity and land degradation on risk and agricultural productivity in less favored production environments of a developing agricultural economy. Drawing production data from household survey conducted in the highlands of Ethiopia, we estimate a stochastic production function to evaluate the effects of variety richness, land degradation, and their interaction on the mean and the variance of wheat yield. Ethiopia is a centre of diversity for durum wheat and farmers manage complex variety mixtures on multiple plots. Econometric evidence shows that variety richness increases farm productivity. Variety richness also reduces yield variability but only for high levels of genetic diversity. Simulations with...
Tipo: Report
Palavras-chave: Land degradation; Wheat production; Productivity; Risk; Genetic diversity; Household surveys; Biodiversity; Stochastic analysis; Crop Production/Industries; Risk and Uncertainty.
Ano: 2006
URL: http://purl.umn.edu/55417

VALUING AGROFORESTRY IN THE PRESENCE OF LAND DEGRADATION
Provedor de dados: 31
Autores: Cacho,   Oscar J.
Agroforestry can help prevent land degradation while allowing continuing use of land to produce crops and livestock. A problem with the evaluation of agroforestry using long-run static models and traditional discounting techniques is that the present value of the forestry enterprise is generally much lower than that of other production activities. This problem is common with Australian native species which tend to have a high environmental value but a low market value. This paper presents an economic analysis of an agroforestry operation in land prone to degradation and in the presence of positive externalities provided by trees. The value of the land is estimated based on the present value of expected returns in perpetuity under optimal management....
Tipo: Working or Discussion Paper
Palavras-chave: Agroforestry; Land degradation; Externalities; Dryland salinity; Land Economics/Use.
Ano: 1999
URL: http://purl.umn.edu/12931

Optimal Dynamic Management of Agricultural Land-Uses: An Application of Regime Switching
Provedor de dados: 31
Autores: Doole,   Graeme J.; Hertzler,   Greg.
The capacity of global agricultural production to meet increased demand for food from population growth and wealth accumulation is threatened by extensive land degradation. Nonetheless, previous research has focused primarily on the dynamic implications of input management and ignored land-use choice. This paper extends this theory through an examination of the intertemporal management of agricultural land through the use of non-crop inputs, such as fertilizer, and land uses that either degrade or restore productivity. The need to consider the relative total asset value of alternative crops over time is demonstrated. Moreover, higher output prices for degrading crops are shown to increase their relative value, motivating the later adoption of substitutes....
Tipo: Journal Article
Palavras-chave: Crop sequences; Land degradation; Regime switching; International Development; Production Economics; Q15; Q24.
Ano: 2011
URL: http://purl.umn.edu/100643

Climate Change and the Economics of Farm Management in the Face of Land Degradation: Dryland Salinity in Western Australia
Provedor de dados: 31
Autores: John,   Michele; Pannell,   David J.; Kingwell,   Ross S.
Paper removed at request of authors 08/03/07.
Tipo: Conference Paper or Presentation
Palavras-chave: Dryland salinity; Climate change; Low rainfall agriculture; Land degradation; Whole farm bioeconomic modelling; Environmental Economics and Policy; Farm Management.
Ano: 2006
URL: http://purl.umn.edu/25800

Assessment of soil erosion in olive orchards (Olea europaea L.) under cover crops management systems in the tropical region of Brazil
Provedor de dados: 90
Autores: Beniaich,Adnane; Silva,Marx Leandro Naves; Guimarães,Danielle Vieira; Bispo,Diêgo Faustolo Alves; Avanzi,Junior Cesar; Curi,Nilton; Pio,Rafael; Dondeyne,Stefaan.
ABSTRACT In the tropics, water erosion is one of the most important factors leading to the degradation and deterioration of agricultural land. Olive orchards have a low canopy coverage, especially during the first years after planting, due to the low density of olive trees. Given the fast expansion of olive orchards in Brazil, this study aimed to evaluate the effect of cover vegetation on soil and water losses under natural rainfall. In addition, it was assessed the crop performance and the vegetation cover index in different management systems in olive orchards. The study was carried out in soil erosion plots, where water and sediment were sampled and measured over two crops season, under the following treatments: in the first season, bare soil with olive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil conservation; Soil loss; Land degradation; Runoff; Olive cultivation.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832020000100503

Physical properties of dystrophic Red Latosol (Oxisol) under different agricultural uses
Provedor de dados: 90
Autores: Tavares Filho,João; Barbosa,Graziela Moraes de Cesare; Ribon,Adriana Aparecida.
Obtaining information about soil properties under different agricultural uses to plan soil management is very important with a view to sustainability in the different agricultural systems. The aim of this study was to evaluate changes in certain indicators of the physical quality of a dystrophic Red Latosol (Oxisol) under different agricultural uses. The study was conducted in an agricultural area located in northern Paraná State. Dystrophic Red Latosol samples were taken from four sites featuring different types of land use typical of the region: pasture of Brachiaria decumbens (P); sugarcane (CN); annual crops under no-tillage (CAPD); and native forest (permanent conservation area) (control (C)). For each land use, 20 completely randomized, disturbed and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Land degradation; Land use; Grazing; Sugarcane; No-tillage farming.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300034

Institutional landmarks in Brazilian research on soil erosion: a historical overview
Provedor de dados: 90
Autores: Telles,Tiago Santos; Dechen,Sonia Carmela Falci; Guimarães,Maria de Fátima.
The problem of soil erosion in Brazil has been a focus of agricultural scientific research since the 19th century. The aim of this study was to provide a historical overview of the institutional landmarks which gave rise to the first studies in soil erosion and established the foundations of agricultural research in Brazil. The 19th century and beginning of the 20th century saw the founding of a series of institutions in Brazil, such as Botanical Gardens, executive institutions, research institutes, experimental stations, educational institutions of agricultural sciences, as well as the creation and diversification of scientific journals. These entities, each in its own way, served to foster soil erosion research in Brazil. During the Imperial period...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Historiography; Soil conservation; Land degradation; Soil science.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000600001

Gully length and average gully depth relationships on two geological sediments in the North Central Nigeria
Provedor de dados: 111
Autores: Okpara, Lious Alimonu; Ogbeh, Gabriel Ogwuche.
Abstract: Gully erosion is widespread in Nigeria and has been reported in all the states of the Federation.  This study was carried out to examine the relationships between gully length and average gully depth on two geological sediments of varying vulnerability to erosion. The dimensions of 37 and 5 random gully samples formed respectively on the Ajalli Sandstones (AS) and the Upper Coal Measures’ (UCM) geological sediments underlying the Idah-Ankpa Plateau of North Central Nigeria were measured.  The gully length (L) and average depth (D) variables were subjected to correlation analysis and the sample bivariate regression to examine their relationships and the predictability of D using L as a prediction tool on the two formations.  Results show that on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Land degradation; Gully erosion; Geological formations; Regression Analysis; Gully erosion; Geological sediments; Gully length; Average gully depth; Coefficient of regression.
Ano: 2018
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4724