نتایج جستجو برای: human induced deforestation

تعداد نتایج: 2436176  

2011

This paper highlights the link between deforestation and credit instability in Latin American countries which exhibit strong deforestation rates as well as macroeconomic instability that is often rooted in the alternating episodes of credit booms and crunches. Pieces of explanation establishing a causal link between credit instability and deforestation driven by agricultural expansion are put f...

2017
Karyn Tabor Kelly W Jones Jennifer Hewson Andriambolantsoa Rasolohery Andoniaina Rambeloson Tokihenintsoa Andrianjohaninarivo Celia A Harvey

Forest conservation and REDD+ projects invest millions of dollars each year to reduce local communities' dependence on forests and prevent forest loss and degradation. However, to date, there is limited evidence on whether these investments are effective at delivering conservation outcomes. We explored the relationships between 600+ small-scale conservation and development investments that occu...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2016
Yann le Polain de Waroux Rachael D Garrett Robert Heilmayr Eric F Lambin

Growing demand for agricultural commodities is causing the expansion of agricultural frontiers onto native vegetation worldwide. Agribusiness companies linking these frontiers to distant spaces of consumption through global commodity chains increasingly make zero-deforestation pledges. However, production and land conversion are often carried out by less-visible local and regional actors that a...

2014
Michael Schlund Felicitas von Poncet Dirk H. Hoekman Steffen Kuntz Christiane Schmullius

a r t i c l e i n f o Keywords: TanDEM-X Land cover Interferometric coherence Tropical forest REDD+ Deforestation and forest degradation are one of the important sources for human induced carbon dioxide emissions and their rates are highest in tropical forests. For mankind , it is of great importance to track land-use conversions like deforestation, e.g. for sustainable forest management and la...

Journal: :Carbon Balance and Management 2006
Georg E Kindermann Michael Obersteiner Ewald Rametsteiner Ian McCallum

BACKGROUND Global carbon stocks in forest biomass are decreasing by 1.1 Gt of carbon annually, owing to continued deforestation and forest degradation. Deforestation emissions are partly offset by forest expansion and increases in growing stock primarily in the extra-tropical north. Innovative financial mechanisms would be required to help reducing deforestation. Using a spatially explicit inte...

2000
Olaf Chitil

In lazy functional programming modularity is often achieved by using intermediate data structures to combine separate parts of a program. Each intermediate data structure is produced by one part and consumed by another one. Deforestation optimises a functional program by transformation into a program which does not produce such intermediate data structures. In this thesis we present a new metho...

Journal: :Journal of environmental management 2008
R J Wasson N Juyal M Jaiswal M McCulloch M M Sarin V Jain P Srivastava A K Singhvi

The Himalaya-Gangetic Plain region is the iconic example of the debate about the impact on lowlands of upland land-use change. Some of the scientific aspects of this debate are revisited by using new techniques to examine the role of deforestation in erosion and river sediment transport. The approach is whole-of-catchment, combining a history of deforestation with a history of sediment sources ...

2010

The need to find a global agreement to limit deforestation has led to the REDD scheme which proposes that developed countries pay developing countries for CO2 emissions saved through avoided deforestation and degradation. This article describes the issues at stake and demonstrates with a stylized transfer scheme which describes the negotiation between developing countries over the allocation of...

2015
Kayla Stan Arturo Sanchez-Azofeifa Mário Espírito-Santo Carlos Portillo-Quintero Madhur Anand

Agricultural expansion is causing deforestation in Minas Gerais, Brazil, converting savanna and tropical dry forest to farmland, and in 2012, Brazil's Forest Code was revised with the government reducing deforestation restrictions. Understanding the effects of policy change on rates and locations of natural ecosystem loss is imperative. In this paper, deforestation in Minas Gerais was simulated...

2004
L. E. ENGLAND

1. We assessed the impacts of deforestation on the energy base of headwater food webs in seven headwater streams in the Upper Chattahoochee basin, GA, U.S.A where percentage forest in catchments ranged from 82 to 96%. We measured terrestrial organic matter standing crop and determined consumer (crayfish and insectivorous fish) dependence on terrestrial versus aquatic energy sources via gut cont...

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