新疆地处欧亚大陆中心,四周环山,地形闭塞,而又远距海洋,属于荒漠一半荒漠大陆性气候,其主要特点,一是气温变化剧烈,年温较差达35.3～40.3℃,日温较差达10～15℃左右。二是降水量少,蒸发量大,空气乾燥。例如,吐鲁番盆地年降水量不到20毫米,年蒸发量竟达2,300～4,600毫米,约为降水量的150～230倍,空气相对湿度只 Xinjiang is located in the center of Eurasia, surrounded by mountains, terrain occlusion, and distant ocean, desert half of the desert continental climate, its main features, first, dramatic temperature changes, the temperature is poor at 35.3 ~ 40.3 ℃, Japan Temperature difference of about 10 ~ 15 ℃. Second, less precipitation, evaporation, air drying. For example, the Turpan Basin annual precipitation is less than 20 mm, annual evaporation as much as 2,300 ~ 4,600 mm, about 150 to 230 times the precipitation, air relative humidity