期刊
BIOGEOSCIENCES
卷 15, 期 12, 页码 3811-3830出版社
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/bg-15-3811-2018
关键词
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资金
- UK Natural Environment Research Council's (NERC) Human Modified Tropical Forests research programme [NE/K016377/1, NE/K016407/1]
- International Academic Fellowship from the Leverhulme Trust
- UN Development Programme
- Avatar Alliance Foundation
- Roundtable on Sustainable Palm Oil
- World Wildlife Fund
- Rainforest Trust
- Margaret A. Cargill Foundation
- David and Lucile Packard Foundation
- Gordon and Betty Moore Foundation
- Grantham Foundation for the Protection of the Environment
- W. M. Keck Foundation
- John D. and Catherine T. MacArthur Foundation
- Andrew Mellon Foundation
- Sime Darby Foundation
- ERC Advanced Grant [291585]
- Ministry of Education, Youth and Sports of the Czech Republic [INGO II LG15051]
- IGA grant [LDF_VP_2015038]
- European Research Council (ERC) [291585] Funding Source: European Research Council (ERC)
- Natural Environment Research Council [NE/D010306/1, NE/B504630/1] Funding Source: researchfish
- The British Council [261877914] Funding Source: researchfish
- NERC [NE/K016407/1, NE/K016377/1, NE/D010306/1, NE/M017508/1, NE/K016369/1, NE/K016253/1] Funding Source: UKRI
Borneo contains some of the world's most biodiverse and carbon-dense tropical forest, but this 750 000 km(2) island has lost 62% of its old-growth forests within the last 40 years. Efforts to protect and restore the remaining forests of Borneo hinge on recognizing the ecosystem services they provide, including their ability to store and sequester carbon. Airborne laser scanning (ALS) is a remote sensing technology that allows forest structural properties to be captured in great detail across vast geographic areas. In recent years ALS has been integrated into statewide assessments of forest carbon in Neotropical and African regions, but not yet in Asia. For this to happen new regional models need to be developed for estimating carbon stocks from ALS in tropical Asia, as the forests of this region are structurally and composition-ally distinct from those found elsewhere in the tropics. By combining ALS imagery with data from 173 permanent forest plots spanning the lowland rainforests of Sabah on the island of Borneo, we develop a simple yet general model for estimating forest carbon stocks using ALS-derived canopy height and canopy cover as input metrics. An advanced feature of this new model is the propagation of uncertainty in both ALS- and ground-based data, allowing uncertainty in hectare-scale estimates of carbon stocks to be quantified robustly. We show that the model effectively captures variation in aboveground carbon stocks across extreme disturbance gradients spanning tall dipterocarp forests and heavily logged regions and clearly outperforms existing ALS-based models calibrated for the tropics, as well as currently available satellite-derived products. Our model provides a simple, generalized and effective approach for mapping forest carbon stocks in Borneo and underpins ongoing efforts to safeguard and facilitate the restoration of its unique tropical forests.
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