基于投影寻踪的湖泊生态健康评价  

Lake ecosystem health assessment based on projection pursuit

作　　者：薛联青[1,2,3] 朱祎真 王思琪[1] 迟艺侠[1,3] 

机构地区：[1]河海大学水文水资源学院,江苏南京210098 [2]石河子大学水利建筑工程学院,新疆石河子832003 [3]河海大学文天学院,安徽马鞍山243031

出　　处：《水资源保护》2016年第2期67-72,共6页Water Resources Protection

基　　金：国家自然科学基金(41371052;U1203282);水利部公益性行业专项(201501059);江苏省"青蓝"工程项目

摘　　要：提出基于投影寻踪的模糊模式识别模型进行湖泊生态健康评价,介绍其主要的4个步骤:1筛选能够反映湖泊健康状况的指标体系;2建立评价标准;3用投影寻踪法确定各指标权重;4采用模糊模式识别模型评价湖泊健康等级,将此模型应用于洪泽湖生态健康评价。结果表明:洪泽湖健康状态处于微病态状态,TN、TP含量过高是影响洪泽湖健康的主要原因;基于投影寻踪的模糊模式识别模型的评价结果符合湖泊实际生态健康状况;模型可推广应用于其他生态系统评价。A fuzzy pattern recognition model based on projection pursuit for lake ecosystem health evaluation is proposed in this paper. There are four procedures in this method ： （ 1 ） screening a set of indicators that can reflect the health status of lake ecosystem, （2） building the evaluation criteria, （3） determining the index weight using the projection pursuit method, and （4） evaluating the lake health status through adoption of the fuzzy pattern recognition model. The model was applied to the health assessment of Hongze Lake. The results suggest that Hongze Lake was in a slightly polluted state. The high concentrations of TN and TP were the main factors that affected the health status of Hongze Lake. The evaluation results of the model corresponded with the lake＇ s actual health status. Therefore, the model can be widely applied to the evaluation of other ecosystems.

关 键 词：生态健康 评价指标 投影寻踪 模糊模式识别模型 洪泽湖 

分 类 号：X52[环境科学与工程—环境工程]