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一、自然概况河西走廊,位于甘肃省黄河之西;东起乌鞘岭,西止星星峡,南有冰川连绵的祁连山,北有龙首山、合黎山及马鬃山等左右屏障;东西长1000余公里,南北宽100～400公里,面积约27.1万平方公里,形成一狭长走廊地带,故有“河西走廊”之称。区内大陆性气候显著,日温差悬殊,历年平均气温在5～10℃之间。年降水量由东向西递减,东
First, the natural profile Hexi Corridor, located in the west of the Yellow River in Gansu Province; Wushaoling Ling from the east, west Xingxia Gorge, south of the Qilian Mountains glacier, north Longshoushan, Heshan and Mazongshan other barriers; 1000 km, 100-400 km wide from north to south, an area of about 27.1 million square kilometers, forming a narrow corridor zone, it is “Hexi Corridor,” said. The continental climate is significant in the region, with great difference in daily temperature. The average annual temperature is between 5 and 10 ℃. The annual precipitation decreases from east to west, east