[dropcap]C[/dropcap]limate change as one popular issues in last decades, it’s affect global average surface temperature and increased over 20th century by about 0.60 C. Forest are likely to experience dramatic changes as a consequence of increment rainfall by climate change. Forest directly affect climate change at the global scale by altering earth’s albedo, hydrological, regimes and atmospheric CO2 .Forest also affect climate at a local scale by altering temperature, humidity and solar radiation (Graham, 1990).
Another serious effect of climate change, related to forest stability is it increased total rain and rain intensity. According to report by Climate Change 2011: The Scientific Basis, Tropical land-surface precipitation measurements indicate that precipitation likely has increased by about 0.2 to 0.3%/ decade over the 20th century. Direct measurements of precipitation and model re analyses of inferred precipitation indicate that rainfall has also increased over large parts of the tropical ocean.