Influence of Water Level Change of Bosten Lake on Wetland Eco-Environment
博斯腾湖水位变动对湿地生态环境的影响

This paper,based on historical observational data of water level of Bosten Lake from 1995 to 2002,analyzes water level change circs of Bosten Lake.From the existing measured data,the water level and area of Bosten Lake changes have two main phases:from 1971 to 1987,water level of Bosten Lake keeps continual decline with an annual average descent of 0.2 m and the water area reducetion of 11.8km2 corresponding to the water level decline;and from 1987 to 2002,water level of Bosten Lake keeps continual rise with an annual average ascendt of 0.32 m and the water area increase of 30.3km2 corresponding to the water level rise.This shows that the main reason for water level change of Bosten Lake is due to runoff change in Kaidu River,and agricultural water comsumption and effluent of Bosten lake basin also induce certain influence on water level change of Bosten Lake.Based on the analysis of water level of Bosten Lake,and adopting the method of correlation analysis,this paper studies the impact of water level change of Bosten Lake on wetland eco,environment.The result indicates that water level great,extent change of Bosten Lake can bring serious negative effect to wetland water quality,various wetland resources and maximization and utilization of wetland function.Aiming at the impact of water level change of Bosten Lake on wetland eco,environment,this paper puts forward the strategies to the wetland sustainable development in Bosten Lake for the purpose of harmonious development of ecology,society and economy.