摘要
地处西北内陆的半干旱与干旱气候区的甘肃省,降水资源少且分布不均,水资源的配置必须在保证生态环境建设必要用水和社会经济合理用水的同时,大力节约并逐步压缩农田灌溉用水。外流河流域的降水首先为当地的植被耗用,剩余的才形成可供开发的地表径流和地下水;水资源配置的顺序是:当地植被耗水,当地社会经济用水,最后形成干支流出境的径流供中下游地区使用。内陆河流域首先满足居民生活用水和生态用水,再满足工业用水,最后供给农业;同时,内陆河流域用水量的最高开发利用率应不超过70%,并确保生态环境的耗水不低于水资源总量的50%。
Due to the inland climate, which is featured with less rainfall and strong evaporation, it becomes critical how to rationally allocate the scarce water resources between the ecological environment maintenance and economic expansion in Gansu Province. However, as an inevitable trend, the balance of water resources allocation has to find the way by reducing irrigation utilization of water without harming sustainability of agricultural development. Separately speaking, for outward rivers in Gansu （either to the Yellow River or to the Yangtze River）, the allocable water resources are mainly the river runoff and groundwater, the priority sequence of water resources allocation would be： the water use for maintenance of local plantation including the environment-oriented and irrigated ones, water use for social and economic activities, and the runoff to lower reaches. As for inward rivers areas （mainly limited in Hexi Corridor）, studies and experience suggest that the extreme utilization rate of river water should not higher than 70% and the ecological environment oriented water use should not less than 50% of the total water resources.
出处
《水土保持研究》
CSCD
北大核心
2007年第2期176-178,共3页
Research of Soil and Water Conservation
基金
甘肃省自然科学基金项目"甘肃省水资源系统‘生-消’结构与可持续供给保障途径的研究"部分内容
编号:25011-A25-029-N
关键词
生态环境
水资源
甘肃省
ecological environment
water resources
Gansu Province
