Please use this identifier to cite or link to this item: https://doi.org/10.1073/pnas.1018776108
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dc.titleRemotely sensed evidence of tropical peatland conversion to oil palm
dc.contributor.authorKoh, L.P.
dc.contributor.authorMiettinen, J.
dc.contributor.authorLiew, S.C.
dc.contributor.authorGhazoul, J.
dc.date.accessioned2014-12-12T07:13:13Z
dc.date.available2014-12-12T07:13:13Z
dc.date.issued2011-03-22
dc.identifier.citationKoh, L.P., Miettinen, J., Liew, S.C., Ghazoul, J. (2011-03-22). Remotely sensed evidence of tropical peatland conversion to oil palm. Proceedings of the National Academy of Sciences of the United States of America 108 (12) : 5127-5132. ScholarBank@NUS Repository. https://doi.org/10.1073/pnas.1018776108
dc.identifier.issn00278424
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/115263
dc.description.abstractRising global demands for food and biofuels are driving forest clearance in the tropics. Oil-palm expansion contributes to biodiversity declines and carbon emissions in Southeast Asia. However, the magnitudes of these impacts remain largely unquantified until now. We produce a 250-m spatial resolution map of closed canopy oil-palm plantations in the lowlands of Peninsular Malaysia (2 million ha), Borneo (2.4 million ha), and Sumatra (3.9 million ha). We demonstrate that 6% (or ≈880,000 ha) of tropical peatlands in the region had been converted to oil-palm plantations by the early 2000s. Conversion of peatswamp forests to oil palm led to biodiversity declines of 1% in Borneo (equivalent to four species of forestdwelling birds), 3.4% in Sumatra (16 species), and 12.1% in Peninsular Malaysia (46 species). This land-use change also contributed to the loss of ≈140 millionMg of aboveground biomass carbon, and annual emissions of ≈4.6 million Mg of belowground carbon from peat oxidation. Additionally, the loss of peatswamp forests implies the loss of carbon sequestration service through peat accumulation, which amounts to ≈660,000 Mg of carbon annually. By 2010, 2.3 million ha of peatswamp forests were clear-felled, and currently occur as degraded lands. Reforestation of these clearings could enhance biodiversity by up to ≈20%, whereas oil-palm establishment would exacerbate species losses by up to ≈12%. To safeguard the region's biodiversity and carbon stocks, conservation and reforestation efforts should target Central Kalimantan, Riau, and West Kalimantan, which retain three-quarters (3.9 million ha) of the remaining peatswamp forests in Southeast Asia.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1073/pnas.1018776108
dc.sourceScopus
dc.subjectCarbon payment
dc.subjectClimate change
dc.subjectReducing emissions from deforestation and forest degradation
dc.subjectRural livelihoods
dc.subjectTropical ecology
dc.typeArticle
dc.contributor.departmentCTR FOR REM IMAGING,SENSING & PROCESSING
dc.description.doi10.1073/pnas.1018776108
dc.description.sourcetitleProceedings of the National Academy of Sciences of the United States of America
dc.description.volume108
dc.description.issue12
dc.description.page5127-5132
dc.description.codenPNASA
dc.identifier.isiut000288712200081
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