摘要
为了分析我国各流域的水资源短缺现状,引入欧盟开发改进的水资源开发利用系数(Water Exploitation Index Plus,简称WEI+),以全国10个水资源一级区作为研究对象,计算2003—2012年各水资源一级区的水资源短缺情况。结果表明:(1)WEI+指数最小的是西南诸河区,其均值为1.9%;WEI+指数最大的是海河区,其均值为130%;且南方4区的WEI+指数均小于北方6区,说明我国北方比南方面临更为严重的水资源短缺问题。(2)南方4区的WEI+指数在2003—2012年间波动不大,而北方6区的WEI+指数波动剧烈;大部分地区的WEI+指数均呈现出下降趋势,这说明区域的水资源短缺情况有所缓解。(3)WEI+指数与流域水利水电开发利用程度在空间上的分布规律基本类似,这说明WEI+指数能够有效反映区域的水资源短缺情况。
In the aim of assessing the water scarcity situation of river basins in China,Water Exploitation Index Plus（WEI＋） developed by European Union was introduced to compute the water scarcity situations from 2003 to 2012in ten first-grade districts of water resources in China. Results show that the WEI＋ na is the smallest, with the average value of 1.9%, and that of Haihe River Basin is the largest, with the averagevalue of 130%. The WEI＋ values of six basins in the North are larger than those of four basins in the South , indica-ting a severe water scarcity situation in North China. The WEI＋ values of four basins in the South changed little during 2003-2012,while those of six basins in the North fluctuated greatly. Moreover,the WEI＋ values of most riv-er basins displayed a dow^nward trend,showing the alleviation of water scarcity situation. In addition,the spatial distribution pattern of WEI＋ is generally similar with that of water conservancy development and utilization degree, which indicates that WEI＋ could effectively reflect the regional water scarcity situation in China.
出处
《长江科学院院报》
CSCD
北大核心
2017年第4期9-14,共6页
Journal of Changjiang River Scientific Research Institute
基金
国家自然科学基金项目(51279006
51479003)
关键词
水资源短缺
改进的水资源开发利用系数(WEI+)
水资源一级区
南方4区
北方6区
water scarcity
Water Exploitation Index Plus（WEI＋）
first-grade districts of water resources
four ba-sins in South China
six basins in North China
