青铜峡灌区水循环主要因子及演变规律研究

Study on Main Factors and Evolution Law of Water Cycle in Qingtongxia Irrigation District

当前灌区水循环演变规律研究已经成为研究区域水循环过程的热点。选取蒸散量、降水量、引水量和排水量等对地下水系统有直接影响的因子,分析其变化趋势,对于查明青铜峡灌区水循环因子的演变规律,缓解各种水问题至关重要。结果表明:从2000年以后,青铜峡灌区蒸散量、引水量、排水量明显减少。原因是从2000年开始,青铜峡灌区开展了续建配套与节水改造工程,提高了水资源的利用率。

At present ,the study on the trait and simulation model of water cycle model has become a hotspot in regional water cycle process.The evapotranspiration ,precipitation ,water diversion and displacement were selected ,which had direct impact on the groundwater system.It＇s important to identify the evolution of irrigation district hydrological cycle, relieve a variety of water issue based on analyzing their trends.The results showed that the evapotranspiration,water diversion,displacement decreased significandy since 2000.The reason was that irrigation rehabilitation and water saving renovation project were carried out in Qingtongxia irrigation district since 2000,which improved the utilization rate of water resources.