| Abstract: |
| East Kalimantan is known as rich of natural resources, both renewable product of high value timber and non-renewable of mineral fuels and coal. Forest degradation occurred in the area due to timber extraction and followed by repeated forest fire. Nowadays, monoculture plantation and coal mining as particular threat for forest cover in East Kalimantan, even in the protected area for economic development reason. Environmental friendly land use planning is an important strategy to achieve sustainable development. Tree diversity and carbon stock as environmental indicator is part of component should be assessed as land use planning input. Amount of 71 plots of 20 x 100 m in 22 land use systems in Berau, Kutai Timur and Pasir were set up to observe tree diversity composition and carbon stock estimation. Higher tree species richness and diversity found in natural ecosystems such as undisturbed forest, logged-over forest, except mangrove that only few species owing to specific characteristic on the ecosystem where allowed limited species to grow. Monoculture systems commonly hold less tree species in the systems depend on the management. Low intensive management contains higher tree species richness and diversity. Natural ecosystems of undisturbed forest, logged-over forest and low intensive management of fruit-based agroforest consist of higher carbon stock than monoculture systems. |
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