从气候角度分析西北地区水资源状况

Water Resources Analysis Based on Climatic Indices

西北地区水资源短缺 ,生态环境相当脆弱。随着西部大开发战略的实施 ,原来水资源的供需矛盾更为明显。利用西北 91个气象台站 40年的气象资料 ,结合地理信息系统技术 ,从降水量、潜在蒸散 (蒸发力 )、干燥度等气候指标 ,分析了西北不同地区的干湿状况和水分盈亏量 .所用资料详实 。

Northwest China is very short of water resources and its ecological environment is very brittle. With the implementing of the strategy of developing West China, the contradiction between water supply and need becomes more pronounced. Based on 40 years of meteorological data of 91 weather stations and combined with GIS, the dry/wet situation and water surplus/shortage quantity of different regions in Northwest of China are analyzed according to the climatic indices of precipitation, potential evapotranspiration and aridity. The results provide a basic knowledge for rational development and use of water resources in Northwest of China.