基于PSR框架模型的南四湖健康评价

Assessment on Health of Nansihu Lake Based on PSR Framework Model

摘要:

根据“压力—状态—响应”（PSR）框架模型，对南四湖健康状态进行评价。选取南四湖流域人口密度、工农业供水需求、富营养化程度、南四湖生物多样性指数、环保投资指数等能够充分反映南四湖压力、状态和响应的指标构建评价指标体系；通过专家经验赋值法对各评价指标进行权重确定，并对指标进行标准化赋值；提出了南四湖健康评价模型并且得出南四湖的健康综合指数；根据健康综合指数，确定南四湖健康状况。研究结果表明，南四湖健康评价指数为0.4051，南四湖健康处于“亚健康”状态。

Abstract:

Based on the Pressure-State-Response (PSR) model and properties of Nansihu Lakes, health level of Nansi Lake is evaluated in this paper. Choosing people consistency, water supply of industry and agriculture, environmental purification, fish resources, nutrient cycling factors which can reflect pressure, state and response, an evaluation system has been set up. The proportion of the indicators is confirmed by experts and experience, and the assessment criteria are based on related national standards, then complete evaluate model is put forward and the health index of Nansihu Lake is figured out. According to health index, the health state of Nansihu Lake is determined. As showed by the results, the health assessment index of Nansihu Lake is 0.4051, which belongs to a "sub-healthy" state.