Climate change is one of the serious challenges that affect all ecosystems in the world. Climate change that happened after industrial revolution, could affect ecological conditions and distribution of plant and animal species. In this study data outputs from two general circulations model (GCM) for two green hose gases emission scenarios downscaled for Golesatn national park located in gorganroud watershed in north of Iran. Maximum and minimum temperature and rainfall as main climatic variables simulated for 2077-2099 and compared with base time 1971-2000. Study results indicated that annual rainfall will changes from -3.39% for A1F1 scenario to 3.84% for B1 scenario. Maximum annual temperature also predicted to change from 2.6 to 6.2 C° and minimum annual temperature from 2 to 5.3 C° for future climate. Study results presented a vision of future climate for study region that could be useful for deciding making and conservation planning.

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