摘要：The Thai government has ambitious plan to further promote the use of biodiesel. However,there has been insufficient consideration on the environmental effects of oil palm expansionin Thailand. This paper focuses on the effects of oil palm expansion on land use. We analysedthe direct land use change (dLUC) and indirect land use change (iLUC) caused by the oil palmexpansion and its effects on ecosystem services supply.Our analysis shows that between 2000 and 2009 dLUC related to oil palm expansion wasmore prevalent than iLUC. dLUC involved new oil palm plantations replacing cropland ratherthan natural ecosystems. Rubber was most frequently replaced by oil palm but there was alsoconversion of natural ecosystems. Later, between 2009 and 2012, iLUC strongly increased.Forests were cleared for rubber production as an indirect effect of oil palm expansion.We also quantified the effects of land use change on selected ecosystem services. Oil palmexpansion led to increased production of fresh fruit bunches; however, it reduced other cropproduction such as latex, rice and fruits. Biodiversity conservation was also negativelyaffected. Carbon storage was positively affected by conversion of unused land, rice andorchard area by oil palm, but negatively affected by the conversion of forests.
关键词：Land use change;ecosystemservice;oil palm expansion;biodiversity;carbon storage;Thailand
