中国西北水资源利用及生态环境安全

• Published in: 地理学报（英文版） Vol. 16; no. 3; pp. 277 - 285
• Main Authors: 张济世, 徐进祥, 张永秋, WANG Mingquan, CHENG Zhongshan
• Format: Journal Article
• Language: Chinese
• Published: 兰州交通大学%中国科学院寒冷与干旱地区环境工程研究所%College of Environmental Sciences, Lanzhou Jiaotong University, Lanzhou 730070, China 2006
• Subjects: water resource exploitation and utilization; west area; ecological safety of water resource
• ISSN: 1009-637X
• DOI: 10.3969/j.issn.1009-637X.2006.03.003

P64; Northwest China includes Xinjiang Ugyur Autonomous Region, Qinghai Province, Gansu Province, Ningxia Hui Autonomous Region and Shaanxi Province, covering 308× 104 km2. It is located in the warm-temperate zone and the climate is arid or semi-arid. Precipitation is very scarce but evaporation is extremely high. The climate is dry, the water resources are deficient, the eco-environment is fragile, and the distribution of water resources is uneven. In this region, precipitation is the only input, and evaporation is the only output in the inland rivers, and precipitation, surface water and groundwater change with each other for many times, which benefits the storage and utilization of water resources.The average precipitation in this region is 232 mm, the total precipitation amount is 7003 × 108 m3/a,the surface water resources are 1891 × 108 m3/a, the total natural groundwater resources are 1150× 108 m3/a,the total available water resources are 438 × 108 m3/a, and the total water resources are 1996× 108 m3/a