<S1-14> Detection of interannual variability of the spatial distribution of deforestation in Borneo by analyzing the cloud-free daily MODIS satellite-observed green-red vegetation index

This proceeding is a compilation of findings and progress activities of research collaboration between the Forest Department Sarawak (FDS) and the Japan Research Consortium for Tropical Forests in Sarawak (JRCTS). To highlight the research findings, An International Symposium entitled "Frontier in Tropical Forest Research: Progress in Joint Projects between the Forest Department Sarawak and the Japan Research Consortium for Tropical Forests in Sarawak" was ii held in Kuching, Sarawak on 21-22 September 2015.We examined the interannual variability of the spatial distribution of deforestation in Borneo by analyzing the Terra and Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) satellite-observed daily green-red vegetation index (GRVI) from 2001 to 2013. In coastal regions of Sarawak (Malaysia) and West and Central Kalimantan (Indonesia), deforestation and vegetation plantation establishment by planting oil palm or acacia were detected each year. In recent years, the area of deforestation and vegetation recovery tended to extend into high-elevation hilly areas. These findings suggest that the ecosystem function of carbon fixation may be continuously declining in large areas of Borneo