摘要
【目的】摸清河套灌区实施节水改造工程以来的地下水动态变化情况。【方法】分析了河套灌区5大灌域共计225个地下水位常规观测井1990—2016年逐月地下水位观测资料。【结果】通过对河套灌区近27 a地下水时空特性分析表明,灌区平均地下水位下降了0.53 m,其中义长灌域地下水位下降最大,下降了0.85 m,乌兰布和灌域地下水位变化很小,地下水埋深维持在1.8 m左右。【结论】各灌域除乌兰布和灌域外,其他灌域与节水改造初期(2000—2005年)相比,节水改造中期(2006—2010年)、节水改造大规模实施期(2011—2016年)地下水位逐渐下降,且节水改造大规模实施阶段(2011—2016年)下降幅度更大。
【Objective】Find out the dynamic changes of groundwater since the implementation of water saving reconstruction project in Hetao irrigation District.【Method】Based on the monthly data of 225 groundwater table observation wells with series from 1990 to 2016, the spatiotemporal variations of groundwater were analyzed within 5 irrigation fields in Hetao Irrigation District.【Result】The average groundwater level in the study area decreased by 0.53 m in 1990—2016, of which the biggest declines came from the Yichang irrigation field, which was dropping by 0.85 m. On the contrary, the variation of Wulanbuhe was very small, and the level of groundwater was maintained at around 1.8m during the study period.【Conclusion】After analyzing the dynamic changes of groundwater level in the 5 irrigation fields at different stages of Water-saving reform, we found that the groundwater level was gradually decreasing along with the processing of the reform compared with the initial stage (2000—2005), especially in the stage of large-scale implementation phase (2011—2016), the falling range of the groundwater level was bigger. However, this phenomenon IS not fit to the variations of the groundwater inWulanbuhe.
作者
张倩
全强
李健
陈婧
李清
ZHANG Qian;QUAN Qiang;LI Jian;CHEN Jing;LI Qing(Inner MongoliaWater Resources and Hydropower Survey and Design Institute, Hohhot 010020, China;Institute ofWater Resources for Pastoral Area, Hohhot 010020, China)
出处
《灌溉排水学报》
CSCD
北大核心
2018年第S2期97-101,共5页
Journal of Irrigation and Drainage
关键词
河套灌区
地下水位
节水改造
动态变化
Hetao irrigation district
groundwater level
water-saving reform
dynamic changing
