Extended data
Gansu Province is located in the west of China, in the middle and upper reaches of the Yellow River, with a vast territory. It is located between 3211'-42 57' north latitude and 9213'-108 46' east longitude, and most of them are located on the second step of Chinese terrain. It borders Shaanxi in the east, Sichuan in the south, Qinghai and Xinjiang in the west, Inner Mongolia and Ningxia in the north and Mongolia in the north. It winds from east to west1.600km, with a total area of 455,900km2 (including enclave 53.22km2), accounting for 4.72% of the total area of China.
The water resources in Gansu Province mainly belong to the Yellow River, the Yangtze River and the inland river. There are five major water systems in the Yellow River Basin: Taohe River, Huangshui River, the main stream of the Yellow River (including Daxia River, Zhuanglang River, Zuli River and other small tributaries that directly enter the main stream of the Yellow River), Weihe River and Jinghe River. There is Jialing River system in the Yangtze River basin; There are three major river systems in the inland river basin: Shiyang River, Heihe River and Shule River (including Sugan Lake System). 3 water systems,15; The total annual surface runoff is 654.38+07.45 billion cubic meters, with a drainage area of 270,000 square kilometers.
Gansu province has a total land area of about 454,400 square kilometers (425,800 square kilometers according to the results of the State Council demarcation), ranking seventh in the country, equivalent to 680 million mu. There are many mountains and few plains, and the mountainous hills in the province account for 78.2% of the total land area.
References:
Baidu encyclopedia-Gansu