Difficulties in tracking the long-term global trend in tropical forest area

Grainger, Alan

doi:10.1073/pnas.0703015105

Cited by 355 publications

(270 citation statements)

References 48 publications

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“…Thus, the quality of data, estimations and level of precision are quite different among them (Hansen et al 2013). For the countries only using RS surveys, some variables such as the forest area change, growing stock or biomass are sometimes difficult to estimate, particularly if there is no field assessment and precision estimates are rarely available (Grainger 2008;Romijn et al 2015).…”

Section: The Forest Resources Assessmentmentioning

confidence: 99%

The role of European National Forest Inventories for international forestry reporting

Vidal¹,

Alberdi²,

Redmond³

et al. 2016

Annals of Forest Science

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Section: The Forest Resources Assessmentmentioning

confidence: 99%

The role of European National Forest Inventories for international forestry reporting

Vidal¹,

Alberdi²,

Redmond³

et al. 2016

Annals of Forest Science

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“…In his analysis of global forest trends using the Food and Agriculture Organization's Forest Resource Assessment data set, Grainger (2008) has identified forest regrowth as an important source of uncertainty. Using the Republic of Panama as a model country, Pelletier et al (2011) further showed that a poor understanding of land-use dynamics, which are related to the agriculture-fallow cycle or shifting cultivation, may induce up to 20% error in reference emission levels.…”

Section: Introductionmentioning

confidence: 99%

Traditional shifting agriculture: tracking forest carbon stock and biodiversity through time in western Panama

Pelletier

Codjia

Potvin

2012

Global Change Biology

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Reducing Emissions from Deforestation and forest Degradation (REDD+) requires developing countries to quantify green-house gas emissions and removals from forests in a manner that is robust, transparent, and as accurate as possible. While shifting cultivation is a dominant practice in several developing countries, there is still very limited information available on how to monitor this land-use practice for REDD+ as little is known about the areas of shifting cultivation or the net carbon balance. In the present work, we propose and test a methodology to monitor the effect of the shifting cultivation on above-ground carbon stocks. We combine multi-year remote sensing information, taken from a 12-year period, with an in-depth community forest carbon stock inventory in Palo Seco Forest Reserve, western Panama. With remote sensing, we were able to separate four forest classes expressing different forest-use intensity and timesince-intervention which demonstrate expected trends in above-ground carbon stocks. The addition of different interventions observed over time is shown to be a good predictor, with remote sensing variables explaining 64.2% of the variation in forest carbon stocks in cultivated landscapes. Multi-temporal and multi-spectral medium resolution satellite imagery is shown to be adequate for tracking land-use dynamics of the agriculture-fallow cycle. The results also indicate that, over time, shifting cultivation has a transitory effect on forest carbon stocks in the study area. This is due to the rapid recovery of forest carbon stocks, which results in limited net emissions. Finally, community participation yielded important additional benefits to measuring

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“…However, understanding the causes of deforestation has been challenging, in part because multiple ecological, political, economic and social factors can all be influential and interact over a vast range of spatial scales 13 . These difficulties are exacerbated by limited knowledge about the pattern and extent of deforestation 14,15 . We have some insight into the forces that influence tree cover dynamics at national scales [16][17][18] , and within local landscapes 19,20 , but little research has attempted to bridge this scale gap.…”

mentioning

confidence: 99%

Human impacts drive a global topographic signature in tree cover

Sandel

Svenning

2013

Nat Commun

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The Anthropocene is a geological epoch marked by major human influences on processes in the atmosphere, biosphere, hydrosphere and geosphere. One of the most dramatic features of the Anthropocene is the massive alteration of the Earth's vegetation, including forests. Here we investigate the role of topography in shaping human impacts on tree cover from local to global scales. We show that human impacts have resulted in a global tendency for tree cover to be constrained to sloped terrain and losses to be concentrated on flat terrain. This effect increases in strength with increasing human pressure and is most pronounced in countries with rapidly growing economies, limited human population stress and highly effective governments. These patterns likely reflect the relative inaccessibility of sloped topography and have important implications for conservation and modelling of future tree cover.

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Difficulties in tracking the long-term global trend in tropical forest area

Cited by 355 publications

References 48 publications

The role of European National Forest Inventories for international forestry reporting

The role of European National Forest Inventories for international forestry reporting

Traditional shifting agriculture: tracking forest carbon stock and biodiversity through time in western Panama

Human impacts drive a global topographic signature in tree cover

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