Study On The Evolution Of Quaternary Groundwater System In The Country Of Shanshan

In the middle of1980s, the groundwater in the County of Shanshan was over exploited,but not heavy. Since the ninetys, with the farmland increasing, irrigation water requirementgrew and the groundwater levels fall. Knowledge of groundwater system was a premise torealize the sustainable exploitation of water resources.This study selects the quaternarygroundwater system in the Country of Shanshan as the main study area. Based on variousaspects of the data, four objects of the groundwater system was studied with GIS, PMWIN,GMS and other data analysis tools, The main findings of the study include:The South basin in Shanshan Country contains a total reserve of groundwater of74.1×10~8m~3.There was29.9×10~8m~3groundwater above the height of-159.13m. It can be lastfor42years according to the reduction speed of the groundwater reserve between2004~2011.The groundwater recharge and discharge changed a lot. Humans effect it more and moregreatly than the nature but on the contrary50years ago. One in five evaluation experts canunderstand the paper, others give the amateur estimates, for they didn’t read it well.The groundwater levels of the mountain of flames piedmont area in the South basindecline continuely, while in the East of the town of Dalangkan, the water levels rose.In theIrrigated area in the North basin, the groundwater level declined more slowly, but a largeamount in the gravel and gobi belt.Chemical constituents of the groundwater except PH and HCO3-own a strong spatialvariability.the water quality is bad in1959s, but better in the same place especially in theirrigation area in the South basin. the water quality change little in the North basin.