Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 66
Primeira ... 1234 ... Última
Imagem não selecionada

Imprime registro no formato completo
Measurements of CO2 exchange over a woodland savanna (Cerrado Sensu stricto) in southeast Brasil Biota Neotropica
Rocha,Humberto R. da; Freitas,Helber C.; Rosolem,Rafael; Juárez,Robinson I.N.; Tannus,Rafael N.; Ligo,Marcos A.; Cabral,Osvaldo M. R.; Dias,Maria A.F. Silva.
The technique of eddy correlation was used to measure the net ecosystem exchange over a woodland savanna (Cerrado Sensu stricto) site (Gleba Pé de Gigante) in southeast Brazil. The data set included measurements of climatological variables and soil respiration using static soil chambers. Data were collected during the period from 10 October 2000 to 30 March 2002. Measured soil respiration showed average values of 4.8 molCO2 m-2s-1 year round. Its seasonal differences varied from 2 to 8 molCO2 m-2s-1 (Q10 = 4.9) during the dry (April to August) and wet season, respectively, and was concurrent with soil temperature and moisture variability. The net ecosystem CO2 flux (NEE) variability is controlled by solar radiation, temperature and air humidity on diel...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado; Savanna; Photosynthesis; Soil respiration; Carbon sequestration; Eddy correlation.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032002000100009
Imagem não selecionada

Imprime registro no formato completo
Áreas prioritarias para captura de carbono en los municipíos de Chignahuapan-Zacatlán, Puebla. Colegio de Postgraduados
Cruz Huerta, Carmina.
Las áreas prioritarias de conservación son una herramienta importante que permiten optimizar el aprovechamiento y conservación de los recursos naturales y forestales. La presente investigación tiene como objetivo definir las áreas prioritarias de conservación de captura de carbono mediante la combinación del riesgo de deforestación y aptitud de captura de carbono con la finalidad de generar estrategias de manejo y conservación. La metodología incluye sistemas de información geográfica y técnicas cuantitativas para determinar las áreas prioritarias de conservación de captura de carbono. La metodología incluyó: (1) Determinación del riesgo futuro de deforestación en dos escalas espaciales; y (2) Identificación de áreas prioritarias de conservación de captura...
Palavras-chave: Escalas espaciales; Riesgo de deforestación; Captura de carbono; Regresión logística; Spatial scales; Risk of deforestation; Carbon sequestration; Logistic regression; Forestal; Maestría.
Ano: 2014 URL: http://hdl.handle.net/10521/2282
Imagem não selecionada

Imprime registro no formato completo
Trends and Future Potential of Payment for Ecosystem Services to Alleviate Rural Poverty in Developing Countries Ecology and Society
Milder, Jeffrey C; Cornell University; Ecoagriculture Partners; jcm85@cornell.edu; Scherr, Sara J; Ecoagriculture Partners; sscherr@ecoagriculture.org; Bracer, Carina; Climate Focus; C.Bracer@climatefocus.com.
Payment for ecosystem services (PES) is a market-based approach to environmental management that compensates land stewards for ecosystem conservation and restoration. Because low-income households and communities control much of the ecologically sensitive land in developing countries, they potentially stand to gain from PES, as environmentally responsible stewardship is assigned a value by various actors in society. To date, however, instances of PES benefiting the poor have been limited mainly to specific localities, small-scale projects, and a handful of broader government programs. We analyze the size, characteristics, and trends of PES to evaluate its future potential to benefit low-income land stewards in developing countries. We estimate that by the...
Tipo: Peer-Reviewed Reports Palavras-chave: Biodiversity conservation; Carbon sequestration; Eco-certification; Market development; Market policy; Payment for ecosystem services; Payment for environmental services; Poverty alleviation; Rural development; Watershed protection.
Ano: 2010
Imagem não selecionada

Imprime registro no formato completo
Food-Carbon Trade-offs between Agriculture and Reforestation Land Uses under Alternate Market-based Policies Ecology and Society
Paterson, Stacey; CSIRO Ecosystem Sciences; University of Adelaide; stacey.paterson@student.adelaide.edu.au; Bryan, Brett Anthony; CSIRO Ecosystem Sciences; brett.bryan@csiro.au.
Understanding the effects of payments on the adoption of reforestation in agricultural areas and the associated food-carbon trade-offs is necessary to inform climate change policy. Economic viability of reforestation under payment per hectare and payment per tonne schemes for carbon sequestration was assessed in a region in southern Australia supporting 6.1 Mha of rain-fed agriculture. The results show that under the median scenario, a carbon price of 27 A$/tCO2-e could make one-third of the study area (nearly 2 Mha) more profitable for reforestation than agriculture, and at 58 A$/tCO2-e all of the study area could become more profitable. The results were sensitive to variation in carbon risk factor, establishment costs, and discount rates. Pareto-optimal...
Tipo: Peer-Reviewed Reports Palavras-chave: Agriculture; Agroecosystem; Carbon sequestration; Ecosystem services; Food security; Land use; Payment; Policy; Reforestation.
Ano: 2012
Imagem não selecionada

Imprime registro no formato completo
The Conditions for Functional Mechanisms of Compensation and Reward for Environmental Services Ecology and Society
Swallow, Brent M.; University of Alberta; brent.swallow@ualberta.ca; Leimona, Beria; World Agroforestry Centre; L.Beria@cgiar.org; Yatich, Thomas; World Agroforestry Centre; T.Yatich@cgiar.org; Velarde, Sandra J.; World Agroforestry Centre; sjvelarde@gmail.com.
Mechanisms of compensation and reward for environmental services (CRES) are becoming increasingly contemplated as means for managing human–environment interactions. Most of the functional mechanisms in the tropics have been developed within the last 15 years; many developing countries still have had little experience with functional mechanisms. We consider the conditions that foster the origin and implementation of functional mechanisms. Deductive and inductive approaches are combined. Eight hypotheses are derived from theories of institution and policy change. Five case studies, from Latin America, Africa, and Asia, are then reviewed according to a common framework. The results suggest the following to be important conditions for functional CRES...
Tipo: Peer-Reviewed Reports Palavras-chave: Carbon sequestration; Ecosystem services; Ecotourism; Environmental services; Institutional change; Payments for environmental services; Watershed services.
Ano: 2010
Imagem não selecionada

Imprime registro no formato completo
Enrichment Planting in Secondary Forests: a Promising Clean Development Mechanism to Increase Terrestrial Carbon Sinks Ecology and Society
Hawryshyn, Jessica; Department of Biology and McGill School of Environment, McGill University; jessica.hawryshyn@gmail.com; Senikas, Alexandra Vyta; Department of Biology and McGill School of Environment, McGill University; alexandra.senikas@mail.mcgill.ca; Potvin, Catherine; Department of Biology and McGill School of Environment, McGill University; Smithsonian Tropical Research Institute; catherine.potvin@mcgill.ca.
With the increasing need to reduce greenhouse gas concentrations, afforestation and reforestation (A/R) projects are being implemented under the Kyoto Clean Development Mechanism (CDM) and under the voluntary carbon (C) market. The specific objective of A/R C projects is to enhance terrestrial sinks. They could also provide low-income communities in developing countries with a source of revenue, as well as a number of ecological and social services. However, feasibility issues have hindered implementation of A/R CDMs. We propose enrichment planting (EP) in old fallow using high-value native timber species as a land-use alternative and a small-scale C projects opportunity. We present EP in the context of ongoing work in a poor indigenous community in...
Tipo: Peer-Reviewed Insight Palavras-chave: Biodiversity; Carbon sequestration; Clean development mechanism; Enrichment planting; Indigenous communities; Payments for environmental services; Secondary forests.
Ano: 2009
Imagem não selecionada

Imprime registro no formato completo
How Forest Management affects Ecosystem Services, including Timber Production and Economic Return: Synergies and Trade-Offs Ecology and Society
Raulund-Rasmussen, Karsten; Forest and Landscape Denmark, University of Copenhagen, Denmark; krr@life.ku.dk; Gundersen, Per; Forest and Landscape Denmark, University of Copenhagen, Denmark; PGU@life.ku.dk; Katzensteiner, Klaus; Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences (BOKU) Vienna, Austria; klaus.katzensteiner@boku.ac.at; De Jong, Johnny; Swedish University of Agricultural Sciences, Uppsala, Sweden; johnny.de.jong@cbm.slu.se; Ravn, Hans Peter; Forest and Landscape Denmark, University of Copenhagen, Denmark; hpr@life.ku.dk; Smith, Mike; Forest Research, Northern Research Station, Roslin, UK; Mike.Smith@forestry.gsi.gov.uk.
Tipo: Peer-Reviewed Reports Palavras-chave: Alternative forest management strategies; Biodiversity; Carbon sequestration; Forest ecosystem services; Forest productivity; Soil fertility; Timber production; Water quantity.
Ano: 2012
Imagem não selecionada

Imprime registro no formato completo
Sistemas agroflorestais: potencial para sequestro de carbono e produção de outros serviços ambientais. Infoteca-e
WOLF, R.; BARBOSA, F. R. G. M.; SILVA, L. F. da; PADOVAN, M. P..
Publicado também no Cadernos de Agroecologia, v. 7, n. 2, 2012.
Tipo: Artigo em anais e proceedings Palavras-chave: Agroecologia; Sequestro de carbono; Carbon sequestration.
Ano: 2012 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/937494
Imagem não selecionada

Imprime registro no formato completo
The role of agriculture in mitigating greenhouse gas emissions. Infoteca-e
MADARI, B. E.; CUADRA, S. V.; OLIVEIRA, P. P. A.; HIGA, R. C. V.; RAMOS, N. P.; ANDRADE, C. A. de; KEMENES, A.; GONDIM, R. S..
Introduction. Agriculture and livestock. Energy crops. Forestry sector. Ecological systems. Fish farming. Final considerations.
Tipo: Parte de livro Palavras-chave: Mitigação de emissão de gases do efeito estufa; Agricultura; Efeito Estufa; Carbono; Mudança Climática; Agriculture; Greenhouse gas emissions; Global warming; Climate change; Soil organic carbon; Carbon sequestration.
Ano: 2020 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1128223
Imagem não selecionada

Imprime registro no formato completo
Ferramenta (kit) para avaliação simplificada de serviços ecossistêmicos em agroecossistemas. Infoteca-e
MONTEIRO, J. M. G.; PRADO, R. B.; FIDALGO, E. C. C.; SCHULER, A. E.; OLIVEIRA, A. P. de; UZEDA, M. C.; DONAGEMMA, G. K..
Apresenta-se uma ferramenta (kit) para avaliação simplificada de SE em agroecossistemas, que está em desenvolvimento por pesquisadores da Embrapa Solos nos últimos anos. A ferramenta agrega um conjunto de protocolos e instrumentos, bem como um manual com orientações de uso para a avaliação simplificada dos serviços ecossistêmicos, a saber: controle à erosão, provisão e regulação hídrica, sequestro de carbono, regulação da fertilidade e avaliação da polinização.
Tipo: Folhetos Palavras-chave: Serviços ecossistêmicos; Agroecossistemas; Sequestro de carbono; Controle da Erosão; Regulamentação; Recurso Hídrico; Fertilidade; Polinização; Ecosystem services; Agroecosystems; Erosion control; Carbon sequestration; Water resources.
Ano: 2020 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1126002
Imagem não selecionada

Imprime registro no formato completo
Comunidades quilombolas do Maciço da Pedra Branca preservam o solo da maior floresta urbana do planeta e incrementam seus estoques de carbono do solo. Infoteca-e
BALIEIRO, F. de C.; MARTINS, A. L. da S.; DONAGEMMA, G. K.; SILVA, E. F. da; TURETTA, A. P. D.; SCHULER, A. E.; PEDREIRA, B. da C. C. G.; CAPECHE, C. L.; STUCHI, J. F.; BEKER, A. A. P. D.; MESQUITA JUNIOR, A.; MENDONÇA, M. M.; PENA, I. A. de B..
Este Informe Técnico é o resultado de um trabalho conjunto entre Embrapa Solos e AS-PTA por meio do Projeto Sertão Carioca: Conectando Cidade e Floresta, realizado com patrocínio da Petrobras, por meio do Programa Petrobras Socioambiental. Nele, você acessa dados e análises acerca da importância das comunidades quilombolas do Parque Estadual da Pedra Branca, principalmente, no tocante ao incremento dos estoques de carbono no solo. O presente Comunicado Técnico tem o propósito de apresentar resultados das ações de pesquisa conduzidas no Quilombo Cafundá Astrogilda, e assim, difundir uma cultura de sustentabilidade em seus mais diversos aspectos sociais, ambientais, econômicos e culturais, dentro e no entorno de uma unidade de conservação localizada na...
Tipo: Folhetos Palavras-chave: Carbono do Solo; Quilombo; Sistemas Agroflorestais; Sequestro de Carbono; Carbono; Solo; Agroforestry; Carbon sequestration.
Ano: 2023 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1151520
Imagem não selecionada

Imprime registro no formato completo
Grasslands. Infoteca-e
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..
Grasslands are among the largest ecosystems and cover around 3.5 billion-hectare (ha) area, representing 26 percent of the world land area and 70 percent of the world agricultural area. These grassland soils contain about 20 percent of the world?s soil organic carbon (SOC) stocks. There are different types of grasslands: natural grasslands, semi-natural grasslands, and agricultural grasslands. Grasslands that are self-seeded are often defined as natural or native grasslands. These grasslands are predominated by grasses, grass-like plants, forbs, or shrubs suitable for grazing or browsing. They are defined as rangelands when natural (native) or grazed, and defined as pastures when forage is managed by seeding, mowing (i.e. for hay, silage, renewable energy...
Tipo: Parte de livro Palavras-chave: Solo; Carbono; Carbon sequestration; Grassland soils.
Ano: 2021 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1137224
Imagem não selecionada

Imprime registro no formato completo
An iron budget during the natural iron fertilisation experiment KEOPS (Kerguelen Islands, Southern Ocean) ArchiMer
Chever, F.; Sarthou, G.; Bucciarelli, E.; Blain, S.; Bowie, A. R..
Total dissolvable iron (TDFe) was measured in the water column above and in the surrounding of the Kerguelen Plateau (Indian sector of the Southern Ocean) during the KErguelen Ocean Plateau compared Study (KEOPS) cruise. TDFe concentrations ranged from 0.90 to 65.6 nmol L-1 above the plateau and from 0.34 to 2.23 nmol L-1 offshore of the plateau. Station C1 located south of the plateau, near Heard Island, exhibited very high values (329-770 nmol L-1). Apparent particulate iron (Fe-app), calculated as the difference between the TDFe and the dissolved iron measured on board (DFe) represented 95 +/- 5% of the TDFe above the plateau, suggesting that particles and refractory colloids largely dominated the iron pool. This paper presents a budget of DFe and...
Tipo: Text Palavras-chave: Phytoplankton bloom; Dissolved iron; Atlantic ocean; Central california; Carbon sequestration; Coastal waters; Surface waters; Plateau region; Organic carbon; Bound iron.
Ano: 2010 URL: https://archimer.ifremer.fr/doc/00205/31605/30036.pdf
Imagem não selecionada

Imprime registro no formato completo
Soil aggregation according to the dynamics of carbon and nitrogen in soil under different cropping systems PAB
Seben Junior,Getulio de Freitas; Corá,José Eduardo; Lal,Rattan.
Abstract The objective of this work was to evaluate total soil carbon and nitrogen, as well as their contents in particulate and mineral-associated C fractions; to determine C stock and sequestration rates in the soil; and to verify the effect of C and N contents on soil aggregation, using different crop rotations and crop sequences under no-tillage. The study was carried out for nine years in a clayey Oxisol. The treatments consisted of different cropping systems formed by the combination of three summer crops (cropped until March) - corn (Zea mays) monocropping, soybean (Glycine max) monocropping, and soybean/corn rotation - and seven second crops (crop successions). Soil samples were taken at the 0.00-0.10-m layer for physical fractionation of C and N,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbon sequestration; Carbon stocks; Cover crops; Crop rotation; Soil aggregates; Soil organic matter.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901652
Imagem não selecionada

Imprime registro no formato completo
Physical quality of an Oxisol under no-tillage subjected to different cropping systems PAB
Seben Junior,Getulio de Freitas; Corá,José Eduardo; Lal,Rattan.
Abstract The objective of this work was to evaluate the physical quality of an Oxisol under no-tillage subjected to different crop rotations and crop sequences. The experiment was carried out in a clayey Oxisol, during six years, in a randomized complete block design, with strip plots and three replicates. The following physical indicators of soil quality were evaluated: soil density and carbon content, as well as mean weight diameter and tensile strength of aggregates. Treatments consisted of three summer crop rotations - corn/corn (Zea mays), soybean/soybean (Glycine max), and soybean/corn - and of seven second crops (crop sequences) - corn, sunflower (Helianthus annuus), oilseed radish (Raphanus sativus), pearl millet (Pennisetum americanum), pigeon pea...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbon sequestration; Crop rotation; Diameter of aggregates; Soil density; Soil organic carbon; Tensile strength.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901568
Imagem não selecionada

Imprime registro no formato completo
Carbon Accumulation in Pinus taeda Estimated by X-rays Densitometry and Trunk Analysis PFB - Pesquisa Florestal Brasileira
Bellote, Antonio Francisco Jurado; Dedecek, Renato Antonio; Lavoranti, Osmir José; Tomazello Filho, Mario de Castro; Andrade, Guilherme de Castro.
The objective of this work was to evaluate Pinus aeda growth and based on X-ray methods of  densitometry and bole analyses to develop mathematical models to estimate carbon amount accumulated on trees of different ages varying on DBH. Five P. taeda plantations were selected on sites of different soils, thinning intensity and growing rate. On each site dominant trees were selected and discs cuts from different heights were collected and submitted to X-ray densitometry for trunk analyses. Mathematical models were developed, to generated equations to compare by testing their statistical identity and equality and to validate by bootstrap methods. The results showed that P. taeda productivity was influenced by soil and silvicultural practices; X-ray...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Productivity; Mathematical models; Carbon sequestration; Thinning; Forestry sites. Produtividade; Modelos matemáticos; Seqüestro de carbono; Desbaste; Sítios florestais..
Ano: 2011 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/208
Imagem não selecionada

Imprime registro no formato completo
Carbon concentration in structures of Arctostaphylos pungens HBK: An alternative CO2 sink in forests Phyton
Pompa-García,M; Jurado,E.
Arctostaphylos pungens HBK is a dominant species with increasing abundance and distribution in chaparral ecosystems as a result of range management and, possibly, changes in climate. The value of this species for carbon (C) sequestration is unknown, and the standard 50% C out of total tree biomass is used as an approximate value. In this study, we aim to determine the C concentration of the primary components of A. pungens. The total C expressed as a percentage of biomass was determined with a Solids TOC Analyzer. We found the C concentration to vary among components. Leaves exhibited the highest C concentration (51.70%). Roots (46.11%), stems (47.30%), fruits (47.89%) and twigs (48.40%) had similar C concentration. These results provided superior...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbon sequestration; Climate change; Manzanita.
Ano: 2015 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572015000200017
Imagem não selecionada

Imprime registro no formato completo
The Dynamics of Carbon Sequestration and Alternative Carbon Accounting, with an Application to the Upper Mississippi River Basin AgEcon
Feng, Hongli.
Carbon sequestration is a temporal process in which carbon is continuously being stored/released over time. Different methods of carbon accounting can be used to account for this temporal nature, including annual average carbon, annualized carbon, and ton-year carbon. In this paper, starting by exposing the underlying connections among these methods, we examine how the comparisons of sequestration projects are affected by these methods and the major factors affecting them. We explore the empirical implications for carbon sequestration policies by applying these accounting methods to the Upper Mississippi River Basin, a large and important agriculture area in the United States. We find that the differences are significant in terms of the location of land...
Tipo: Working or Discussion Paper Palavras-chave: Annual average carbon; Annualized carbon; Carbon sequestration; Ton-year carbon; Environmental Economics and Policy.
Ano: 2005 URL: http://purl.umn.edu/18438
Imagem não selecionada

Imprime registro no formato completo
Valuation Methods for Environmental Benefits in Forestry and Watershed Investment Projects AgEcon
Cavatassi, Romina.
The understatement or omission of the environmental costs and benefits associated with forest management options results in project evaluations and policy prescriptions that are less than socially optimal. The aim of this paper is to examine the full range of costs and benefits associated with forests, distinguishing between how these should, and actually are, included in economic analyses. The paper first describes the economic analysis undertaken in the project evaluation procedure of the World Bank. The second section deals with all costs and benefits that typically occur in forestry projects. Costs and benefits are classified as on-site private, on-site public or global according to their nature and area of impact and according to the Total Economic...
Tipo: Working or Discussion Paper Palavras-chave: Economic analysis; Forest values; Global environmental benefits; Externalities; Carbon sequestration; Resource /Energy Economics and Policy; D61; D62; Q51; Q57; O13.
Ano: 2004 URL: http://purl.umn.edu/23799
Imagem não selecionada

Imprime registro no formato completo
A time to change? The supply of climate mitigation products from land-use change in northern NSW AgEcon
Moss, Jonathan; Cacho, Oscar J.; Mounter, Stuart W..
With the impending introduction of an Australian Carbon Pollution Reduction Scheme, farmers and landholders in rural Australia have increased opportunities to participate in the market. This includes the adoption of land-use change to sequester additional carbon in exchange for carbon credits and the production of a renewable energy source (biofuels). However, these land-use changes compete with existing farm enterprises and may contain significant transaction costs. Therefore it is necessary for the institutional arrangements to provide adequate incentives for landholders to adopt these land-use changes. This paper examines the potential supply of these land-use changes for climate mitigation from landholders in a northern NSW catchment. These results...
Tipo: Conference Paper or Presentation Palavras-chave: Border Rivers-Gwydir; Carbon sequestration; Land-use change; Resource /Energy Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/59104
Registros recuperados: 66
Primeira ... 1234 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional