Water Resources Exploration And Environment Effect At The North Of Fengshatan Area In Jinbian

Jingbian is the important component part of China's Heavy Industry Energy Base in Yulin city which located in the junctional area of Shaanxi,Gansu,Ningxia and Inner Mongolian province, with the rapid economic development in recent years, the demand for water resources sharply increased, which has caused many negative ecological environment effects like the groundwater level drops, disappearance of lakes, large spring outcrop fallback, and the area of oasis gradually deflating, activated local sandy land. Therefore, the study on environmental effects caused by the interaction in exploitation of water resources as well as groundwater development have great realistic significance to the rational exploitation of groundwater sources and protection of the ecological environment, as well as regional and national economic development.Through the arid inland Northwest region and the Ordos Basin, the main the relationship between buried depth of groundwater and the ecological vegetation has been established through analysed the vegetation development and the groundwater level depth in this area; Using hydrogeology analysis methods and analysis of groundwater flow system, established regional hydrogeological conceptual and mathematical models, an numerical analysis of these models are made with the aid of Processing Modflow Pro groundwater flow simulation software, based on large-scale pumping test data ,the identification and validation of this model are worked out.Based on the 3-D numerical model of seepage system of groundwater, the dynamic response of every water resources exploration plan have been predicted and analysed, and studied the mutual influence as well as to the environment influence in this Water-source field, and at last, the reasonable development degree and permission yield were obtained. Based on the field tests, as well as land irrigation test, uses the numerical simulation method, the technology of water diversion and its effection in Siboshu Haizi area and the northern Fengshatan area were studied.This is the first study to establish the 3-D numerical model of seepage system of groundwater to study the mutual exploitation of Water-sourece field and impacts on the ecological environment, an sustainable exploitation mode on utilization of groundwater was proposed, research results have practical value for the groundwater resources development and the ecological environmental protection in Fengshatan area, and provide reference model and experiences for socio-economic, ecological and environmental development in the arid and semi-arid areas.