基于PSR模型的乌梁素海生态系统健康分区评价  

A PSR-model-based regional health assessment of the Lake Wuliangsuhai

作　　者：毛旭锋[1,2] 崔丽娟[1] 张曼胤[1] 

机构地区：[1]中国林业科学研究院湿地研究所,北京100091 [2]青海师范大学生命与地理科学学院,西宁810006

出　　处：《湖泊科学》2013年第6期950-958,共9页Journal of Lake Sciences

基　　金：国家科技支撑计划课题项目(2011BAC02B03);中央公益性科研院所专项项目(CAFINT2012C09);国家林业公益性行业科研专项项目(201304315)联合资助

摘　　要：在压力-状态-响应（Pressure-State-Response,PSR）模型的基础上,诊断了内蒙古乌梁素海不同湖区的生态系统健康状态.从湖泊生态环境特征、生态功能和社会环境3个方面筛选出25项诊断指标,在专家打分法的基础上,采用层次分析法确定每项指标的权重.根据湖区生态环境特征差异,将湖泊划分为Ⅰ、Ⅱ和Ⅲ3个不同的区域,分别诊断各个区域的健康状态.结果显示,乌梁素海生态系统综合健康指数在0.3 ～0.5之间,属于警戒或者较差的状态.Ⅰ、Ⅱ和Ⅲ区域的综合健康指数分别为0.3395、0.3866和0.4494.基于湖泊的生态系统健康存在区位上差异,为恢复湖泊健康提出有针对性的措施.本研究的开展,可为湖泊生态系统恢复和管理政策的制定提供科学依据.A Pressure-State-Response （PSR） model was developed to diagnose the sub-regional health of the Lake Wuliangsuhai in the Inner Mongolia.A total of 25 indicators including ecological character indicators,ecological function indicators and social environment indicators were combined to assess the ecosystem health of the lake.Expert Evaluation Method （EEM） and Analytic Hierarchy Process （AHP） were used to identify the weight of each indicator.The Lake Wuliangsuhai was classified into three sub-regions （Ⅰ,Ⅱ and Ⅲ） in consideration of their ecological and environmental characteristics.Results indicate that the lake is staying in a state of alarming or worse quality.The Comprehensive Health Indices （CHI） of three sub-regions are 0.3395,0.3866 and 0.4494,respectively,reflecting obvious regional differences in the lake ecosystem health.The current study may provide useful information for wetland restoration and management.

关 键 词：湖泊生态系统 健康评价 PSR模型 乌梁素海 

分 类 号：X826[环境科学与工程—环境工程]