博斯腾湖生态系统健康状态与水位关系研究

Relationship between water level and ecosystem health in Bosten Lake

基于熵权的概念,以干旱区博斯腾湖为研究对象,通过建立生态系统健康状态评估模型,采用1993—2012年期间博斯腾湖的水环境监测数据,分析近20年博斯腾湖的生态系统健康状态。结合水位数据,探讨了博斯腾湖生态健康状态与水位之间的相关性。研究结果表明:博斯腾湖水生态系统健康状态整体保持在中等水平,其生态系统健康状态与水位变化存在着较大的相关性,两者的Pearson相关系数为0.778。当水位低于1 046.2 m时,其生态健康状态较差,而水位超过1 046.8m时,生态健康状态较好。

With Bosten Lake in the arid area as research objective, the assessment mouel ior ecu- system health is established based on the entropy weight concept. Water environment monitoring data of Bosten Lake in the years from 1993 to 2012 are adopted to analyze the eeo-system health conditions of Bosten Lake in the nearly 20 years. In combination with water level data, the corre- lation between eco-system health conditions in Bosten Lake and water level is discussed. The re- suits show that. in general, the ecosystem health conditions of gosten Lake maintain at middle level, and larger correlation exists between the ecosystem health conditions and water level differ- enee, of which Pearson correlation coefficient is 0. 778. When water level lower than 1 046.2 m, ecological health conditions are worse, and when water level is more than 1 046.8 m, the health conditions are better.