摘要
选择义长灌域作为研究区,根据水量平衡原理,定量分析了1991—2010年灌域地下水各均衡要素的变化情况,评价了节水改造对地下水的影响.结果显示,节水改造工程实施后,地下水补给量平均减少了5 100万m3.a-1,地下水消耗量平均减少了4 390万m3.a-1,地下水位降低了0.74m.
After implementation of water-saving construction in Hetao irrigation dtstrmt and a clecrease m irrigation water consumption from the Yellow River, replenishment of groundwater decreased over the whole irrigated area. Analysis of groundwater balance from 1991 to 2010 revealed changes in groundwater elements before and after the construction in Yichang Experimental Station. Data showed an average decrease in groundwater recharge of 5.1 × 10^7m^3·a^-1 and a reduction in groundwater consumption of 4.4 × 10^7 m^3·a^-1. Groundwater level has dropped 0.74 m.
出处
《北京师范大学学报(自然科学版)》
CAS
CSCD
北大核心
2013年第2期243-245,共3页
Journal of Beijing Normal University(Natural Science)
基金
国家自然科学基金资助项目(41001318)
中央高校基本科研业务费专项资金资助项目
关键词
义长灌域
地下水
水均衡
节水改造
Yichang irrigation sub-district
groundwater
water balance
water saving reform