| Abstract: |
| Various ecosystems, huge area of swampy in Merauke, lowland forest in Jayapura and subalpine forest in Jayawijaya are found in Papua Province. During economic development, most of forest area in Papua is under threat due to source of agriculture land, timber plantation and infrastructure development. Forest conversion various purposes increase carbon emission and biodiversity lost. Developing mitigation action strategies as part of land use planning in Papua was done through considering balance between economic growth and sustainable forest function. Tree diversity and carbon stock is necessarily important to be assessed as input in land use planning. Amount of 64 plots of 20 x 100 m in 15 land use systems in Jayapura, Jayawijaya and Merauke were set up to observe tree species diversity and estimate carbon stock in each land use systems. Tree species richness in the natural ecosystems of Jayapura was higher than in Jayawijaya and Merauke due to biophysical conditions. The most important species in the man-mad ecosystems varied depending on the market conditions, with betel nut predominating in Jayapura while the most important was coffee in Jayawijaya and mixed fruits in Merauke. Natural ecosystems provide the best area for tree species conservation, in contrast to man-made ecosystems. Undisturbed dry land forest in Jayapura and Merauke contained the highest carbon stock compared to the other ecosystems, but pines forest and complex agroforest contained the highest carbon stock in Jayawijaya. |
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