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《Journal of Safety and Environment》 2007-06
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Analysis on the characteristic changes of the eco-environment and water resources in Shiyang River Catchments

HAN Feng-jun ZHANG Bo (Department of Water Electric Survey and Design in Wuwei,Wuwei 730070,Gansu,China)  
The present paper intends to report our investigation and analysis over the characteristic changes of the eco-environment and water resources in Shiyang River Catchments in the eastern Hexi Cor- ridor,Gansu.Our investigation has disclosed that serious changes have taken place over the past 50 years since 1950s,and,in term, eco-environment and water supply features have been negatively influ- enced,such as over-exploitation of the surface-running water,the shrinking groundwater replenishment in the lower reaches as well as the decreased spring water supply.In our investigation and analysis, we have found that over-exploitation of the groundwater and large- scale water-irrigation system development have virtually resulted in the serious consequences in the water resource distribution pattern in the catchments;and serious eco-environmental problems have in turn been brought about in recent years.In particular,the groundwater balance and the normal relationship between the water resources and the eco-environment have seriously been disturbed.As a result,the rate of mineral content in the ground water goes up with the Saline-al- kali 1 increased and the decertified soil spreading.In hoping to stop such a tendency,it is suggested in our paper to strengthen the scien- tific use of the local water resources as well as the proper groundwater exploitation so as to restore the original beautiful natural eco-environ- ment and ensure the sustainable development of the regional econo- my.
【CateGory Index】: TV213.4;X171
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