failed, hampered ecosystem, clean water scarcity, biodiversity degradation, forest fire, and disease. Stern (2007) says
climate change is part of economy problem. On business as usual situation, when Climate change happens as a natural process and human activities include in. Increasing of earth temperature
makes ice smoothing, raising sea level, variability on nature temperature, and global warming. It causes arid, paddydeveloped countries ignore the
emission effect, the loss is 14 percent of global Gross Domestic Product (GDP) in twenty one century. The replacement
cost is about 2 percent to 5 percent of global GDP and adaptation cost is 0.5 percent of developed countries’ GDP. It
shows adaptation cost is lower than replacement cost. Indonesia has 132.4 million hectare forest for reserve of CO2
(carbon sink). The forest is important to share 85 percent on emission descent. Community involvement is doing by
reforestation and planting the tree.