甘肃地处我国西北部,全省东西狭长,地域横跨青藏、蒙新、黄土三大高原,分属长江上游、黄河中上游和内陆河三大流域,北部有腾格里、巴丹吉林、库姆塔格三大沙漠,山沙区面积占全省总面积的90%以上,是个多山、多沙、多灾、水土流失严重、森林植被稀疏、生态环境脆弱的省份,生态区 Gansu is located in the northwestern part of our country. The whole province is long and narrow. The region covers three major Tibetan plateau areas: Qinghai-Tibet, Mengxin and Loess. It belongs to the upper reaches of the Yangtze River, middle and upper reaches of the Yellow River and inland rivers. In the northern part, there are Tenggerli, Badain Jilin , Kumtag three deserts, sandy area accounts for more than 90% of the total area of ​​the province, is a mountainous, sandy, multi-disaster, serious soil erosion, sparse forest vegetation, ecological environment fragile provinces, ecological zone