Accumulation process of soil organic carbon in seasonally dry tropical forest and its response to the impact of forest conversion to rubber plantation

点击翻译按钮获取中文摘要

Conversion of tropical dry forest to rubber plantation is widely observed in Southeast Asia at present. We conducted soil survey in seasonally dry tropical forests and rubber plantations in Cambodia to clarify the temporal changes in stock and physical composition of soil organic carbon during the land use change. The labile carbon pool in forest soil which is composed of fine plant debris rapidly decreased after the clear cutting of forest and planting of rubber trees. On the other hand, the impact of re-planting of old rubber plantations on soil organic carbon pool was small compared to that of the establishment of new rubber plantations.