The climate in Tibet turns gradually from being warm and moist to cold and dry from its southeast toward its northwest. Ecologically,the changes are manifested in belts from forest,bush,meadow and steppe to desert.

• 西藏的气候自东南向西北由暖热湿润向寒冷干旱呈递次过渡，自然生态由森林、灌丛、草甸、草原到荒漠呈带状更迭。