College of Water and Architectural Engineering, Shihezi University, Shihezi, China; Xinjiang Production and Construction Group Key Laboratory of Modern Water-saving Irrigation, Shihezi, China; Department of Geological Sciences, Center for Water Research, University of Texas at San Antonio, TX, United States.
Department of Geological Sciences, Center for Water Research, University of Texas at San Antonio, TX, United States.
Sci Total Environ. 2020 Mar 10;707:135587. doi: 10.1016/j.scitotenv.2019.135587. Epub 2019 Nov 19.
Mulch drip irrigation is widely used in the arid areas of Northwest China. Consequently, the Manas River Basin has developed into the fourth largest irrigated agricultural area in China. In this study, a groundwater model of the regional water cycle was developed to quantitatively assess the groundwater balance in response to different irrigation schemes, including traditional irrigation, conventional water-saving irrigation, and high-efficiency water-saving irrigation schemes. Our results reveal that 1) The water-saving irrigation technology has affected the water cycle process in farmlands. The higher the degree of water conservation, the lower the infiltration into groundwater, the higher the deficit of the groundwater balance, and the more significant the decline of the groundwater level. 2) The groundwater at the Manas River Basin remains in a negative equilibrium state. To achieve an equilibrium state of the groundwater at the Manas River Basin, the catchment management agencies should restrict the scale of oasis development and the utilization of groundwater.
膜下滴灌在我国西北干旱地区得到了广泛应用。由此，玛纳斯河流域发展成为中国第四大灌溉农业区。本研究建立了区域水循环地下水模型，定量评估了不同灌溉方案（传统灌溉、常规节水灌溉和高效节水灌溉方案）对地下水平衡的响应。结果表明：1）节水灌溉技术影响了农田水循环过程。节水程度越高，入渗补给地下水越少，地下水平衡亏缺越大，地下水位下降越明显。2）玛纳斯河流域地下水处于负均衡状态。要实现玛纳斯河流域地下水的均衡状态，流域管理机构应限制绿洲发展规模和地下水开采量。
