Effects Of Groundwater Excessive Exploitation On The Hydro-ecosystems In Oasis

The exploitation and utilization of groundwater in oasis is an important water-related activity, which has centuries-old history. Along with the exploitation and utilization of groundwater in the past several decades, the economy of oasis has gained rapid development. At the same time, some problems have emerged when exploiting and utilizing water resources in oasis. The deterioration of hydro-ecosystems caused by excessive exploitation of groundwater has become a common problem, which turned into gradually an important factor restricting the sustainable development of society and economy in oasis.The paper takes the Yaoba oasis locating on the foot of HeLan Mountain for the research object. And combining the idea of "the exploitation and utilization of water resources and the environment protection are in harmony, the sustainable development obtained", this paper analyzes many problems, which aiming at the deterioration of hydro-ecological environment caused by excessive exploitation of groundwater. What follows are the conclusions.(1) In exploitation time, the pumping of groundwater in large numbers brought the depression of cones in west of Hechulerige and Sharihuode, whose water levels in the center of depression cones are 1662 meters and 1665 meters. At the time of exploitation, the groundwater runoff of irrigation circumjacent areas was moving to the center of depression cones. In non-exploitation time,...