摘要
近年来,玛纳斯河流域灌溉面积进一步扩大,人类大量开采地下水,引起下游地下水位急剧下降,生态植被局部退化。本文以数值模拟为手段,应用Visual MODFLOW软件,对不同开采情景下玛纳斯河流域下游团场地下水位下降情况进行了预测,研究结果表明:由于灌溉期地下水大量开采,8月份地下水位下降最为明显;3种开采方案中,种植结构优化的地下水开采方案为最优方案,近期和远期规划年地下水位下降分别为1-2 m和3-5 m,说明通过调整种植结构来减少地下水开采量可有效的减少地下水负均衡量。本文研究结果对流域地下水开采及水资源的合理利用具有重要意义。
In recent years, with the furtherexpansion of the irrigation area, human exploit excessive groundwaterin Manasi RiverBasin, the groundwaterlevel had decreased sharply and ecological vegetation had a local degradation. Based on the numerical simulation, the study utilizes Visual MODFLOW to simulate groundwaterlevel decline in Manasi Riverbasin between different situations. The simulation results show that,due to the groundwateroverexploitation during the irrigation period, the groundwaterlevel decreased significantly in August. In three kinds of plans, the groundwaterexploitation scheme of planting structure optimization is the optimal solution. The decline of groundwaterlevel are 1- 2 m and 3- 5 m in short- term and long- term planning, respectively. The adjustment of planting structure to reduce the amount of groundwaterextraction can effectively reduce groundwaternegative mean measure.The study results have significance forthe basin groundwaterexploitation and rational use of waterresources.
出处
《石河子大学学报（自然科学版）》
CAS
2015年第5期654-660,共7页
Journal of Shihezi University(Natural Science)
基金
国家自然科学基金项目(41361096)(U1203282)(51269026)(41371052)
兵团国际合作项目(2012BC004)
石河子大学杰出青年项目(2012ZRKXJQ08)
兵团创新团队(2014CC001)
