Application of a Surrogate Model for a Groundwater Numerical Simulation Model for Determination of the Annual Control Index of the Groundwater Table in China

The Chinese government hopes to implement groundwater table control to realize the sustainable utilization of groundwater resources based on controlling the current groundwater exploitation amount. In this study, a method to determine the control index of the groundwater table is proposed. In the method, the reasonable relationship between the groundwater table and groundwater exploitation amount is ensured using the groundwater numerical simulation model. The operability of the index determination is improved using a surrogate numerical model, and the annual hydrological dynamic is simplified to three scenarios of dry, flat, and wet. To verify this method, the Minqin Basin in Northwest China was chosen as a typical study area. It is assumed that the control index of groundwater exploitation in 2020 is 85,000 × 103m3. Then, the preset annual water table index is calculated as [−0.70, 0.62, 1.13, −1.25, 1.36, 3.09] m [−0.77, 0.53, 1.05, −1.33, 1.27, 2.96] m, and [−0.83, 0.46, 0.99, −1.40, 1.20, 2.85] m for the chosen six monitoring wells, varying over the years with wet, flat, and dry scenarios. This method can ensure high precision, operability, and dynamic management when determining the control index of the groundwater table and satisfy the demand of managers.

Agricultural Structure Adjustment and Ecosystem Restoration Planning at the Village Level to Combat Desertification: A Pilot Study in the Minqin Basin, Northwest China

A village-scale approach was developed to break the cycle between desertification and poverty by providing sustainable employment and income, promoting environmental restoration by reducing water consumption, and integrating poverty amelioration with environmental restoration to ensure that solving one problem does not create new ones. The advantages of high-efficiency water-saving planting, a profitable livestock system, a sand-processing industry, and sand control and afforestation are integrated into what we call the Zhengxin pattern, which offers overall ecological and environmental benefits superior to those of competing approaches. The overall output efficiency of the Minqin basin water resources will increase threefold.

Groundwater Baseline Quality in the Minqin Basin, NW China

Study on groundwater baseline quality is very important for groundwater management, as managers want to know the magnitude and reason for the elevated content (whether the elevated content is geological or anthropogenic in origin). As the baseline is defined as the range of concentration of a give element is derived entirely from natural sources under condition not perturbed by anthropogenic activity, it can be obtained from the palaeowaters. Based on the published data in the Minqin Basin, NW China, the groundwater baseline quality is determined. This will be one of the first groundwater baseline quality studies in China. Results show that the relatively high total mineral content in the basin is related to arid condition and low groundwater flow velocity and that the most groundwater quality has not been affected by human activities.

Research of Water Resources Sustainable Utilization and its Effect on the Development of Regional Economy

The water resources is the necessary of human life and production, and also the main biological survival factors. In this paper, the Minqin basin water resources utilization, in Shiyang river basin.Minqin basin is one of the most serious areas, in China, the development and utilization of water resources angelica knot, the contradiction of the water and the ecological environment problems. Development and utilization of regional water more than its carrying capacity serious.Support the development of oasis and improve the ecological environment problems in Minqin basin, system analysis for the reasonable exploitation and utilization of groundwater need guarantee of rational use of water resources, and sustainable economic development and ecological environment of the benign circulation.

Application of GIS and FEFLOW in Forecasting Groundwater Flow Field of Minqin Basin

Conditions were considered of complex geology and the hydrogeology of Minqin, the 3d numerical simulation model of groundwater system was built by FEFLOW software in the study area. Author found that hydrogeologic parameters which have been debugged many times corresponded with the hydrogeology prospecting results well. Verification results show that the model has better simulation effect and higher reliability in checking the model. Facts show that prediction of groundwater flow field has high reliability in the study area.