نتایج جستجو برای: forest degradation

تعداد نتایج: 254568  

2012
Belinda Arunarwati Margono Svetlana Turubanova Ilona Zhuravleva Peter Potapov Alexandra Tyukavina Alessandro Baccini Scott Goetz Matthew C Hansen

As reported by FAO (2005 State of the World’s Forests (Rome: UNFAO), 2010 Forest Resource Assessment (FRA) 2010/095 (Rome: UNFAO)), Indonesia experiences the second highest rate of deforestation among tropical countries. Hence, timely and accurate forest data are required to combat deforestation and forest degradation in support of climate change mitigation and biodiversity conservation policy ...

2012
Julianno B. M. Sambatti Raphael Leduc Dieter Lübeck João Roberto Moreira João Roberto dos Santos

REDD (Reduced Emissions from Deforestation and forest Degradation) constitutes a set of financial incentives designed to reduce CO2 emissions from forest degradation and deforestation. REDD success depends on measuring forest biomass as a proxy for CO2 stocks. We tested the efficacy of airborne Xand P-band interferometry as a remote-sensing method to quantify forest biomass and detect changes i...

Journal: :Journal of environmental management 2010
Jane Bryan Phil Shearman Julian Ash J B Kirkpatrick

Reduction of carbon emissions from tropical deforestation and forest degradation is being considered a cost-effective way of mitigating the impacts of global warming. If such reductions are to be implemented, accurate and repeatable measurements of forest cover change and biomass will be required. In Papua New Guinea (PNG), which has one of the world's largest remaining areas of tropical forest...

2011
Margaret M Skutsch Arturo Balderas Torres Tuyeni H Mwampamba Adrian Ghilardi Martin Herold

The paper reviews a number of challenges associated with reducing degradation and its related emissions through national approaches to REDD+ under UNFCCC policy. It proposes that in many countries, it may in the short run be easier to deal with the kinds of degradation that result from locally driven community over-exploitation of forest for livelihoods, than from selective logging or fire cont...

2009
Gregory P. Asner David E. Knapp Aravindh Balaji Guayana Páez-Acosta

Monitoring deforestation and forest degradation is central to assessing changes in carbon storage, biodiversity, and many other ecological processes in tropical regions. Satellite remote sensing is the most accurate and cost-effective way to monitor changes in forest cover and degradation over large geographic areas, but the tools and methods have been highly manual and time consuming, often re...

2017
Jessie C. Buettel Stefania Ondei Barry W. Brook Jessie Buettel

The forest ecology literature is rife with debate about how to: (i) define a ‘forest’ and distinguish it from similar systems, such as woodlands, savannas, parklands or plantations; (ii) identify transitions from ‘forested’ to ‘non-forested’ states and, most challengingly; (iii) quantify intensities of degradation. Here we argue that past attempts to define forests and forest degradation, focus...

Journal: :Journal of land use science 2015
Oh Seok Kim Joshua P Newell

This paper proposes a new land-change model, the Geographic Emission Benchmark (GEB), as an approach to quantify land-cover changes associated with deforestation and forest degradation. The GEB is designed to determine 'baseline' activity data for reference levels. Unlike other models that forecast business-as-usual future deforestation, the GEB internally (1) characterizes 'forest' and 'defore...

2011
Mehraj A Sheikh Munesh Kumar Rainer W Bussman NP Todaria

BACKGROUND Reducing carbon Emissions from Deforestation and Degradation (REDD+) is of central importance to combat climate change. Foremost among the challenges is quantifying nation's carbon emissions from deforestation and degradation, which requires information on forest carbon storage. Here we estimated carbon storage in India's forest biomass for the years 2003, 2005 and 2007 and the net f...

Journal: :Environmental science and pollution research international 2005
Frank Laturnus Isabelle Fahimi Milan Gryndler Anton Hartmann Mathew R Heal Miroslav Matucha Heinz Friedrich Schöler Reiner Schroll Teresia Svensson

GOAL, SCOPE AND BACKGROUND The anthropogenic environmental emissions of chloroacetic acids and volatile organochlorines have been under scrutiny in recent years because the two compound groups are suspected to contribute to forest dieback and stratospheric ozone destruction, respectively. The two organochlorine groups are linked because the atmospheric photochemical oxidation of some volatile o...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Antje Ahrends Neil D Burgess Simon A H Milledge Mark T Bulling Brendan Fisher James C R Smart G Philip Clarke Boniface E Mhoro Simon L Lewis

Tropical forest degradation emits carbon at a rate of approximately 0.5 Pgxy(-1), reduces biodiversity, and facilitates forest clearance. Understanding degradation drivers and patterns is therefore crucial to managing forests to mitigate climate change and reduce biodiversity loss. Putative patterns of degradation affecting forest stocks, carbon, and biodiversity have variously been described p...

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