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基于熵权法的连云港市入海河流环境健康评价——以蔷薇河为例

Environmental Health Assessment on Seagoing Water in Lianyungang City by Entropy Weight Approach——A Case Study of Qiangwei River

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【摘要】 建立包含压力状态响应要素的指标体系,采用基于熵权的模糊数学评价方法运用相对隶属度算法评价在快速城市化胁迫下(2000~2007年)连云港市入海河流(以蔷薇河为例)相对健康程度,该方法避免了主观判断河流环境健康标准的不确定性。评价结果表明2000~2007年,连云港市蔷薇河相对健康整体大致呈下降趋势最优年为年最差为年按照最大隶属度原则,压力要素的最大隶属度0.7639(2003年),状态要素的最大隶属度(2000年),响应要素的最大隶属度(2002年);各评价指标的最大隶属度主要集中于2002年其概率为31.25%

【Abstract】 This paper assessed the health conditions of the seagoing water in Lianyungang (a case study of Qiangwei River from 2000 to 2007) under the force of rapid urbanization. We used a fuzzy logic approach on entropy weight. The indicator system contained the components of Pressure, State and Response, and the relative membership method used here avoided the uncertainty in estimating the standard of stream health subjectively. The results showed that: the relative health status of the Qiangwei River approximately presented downtrend from 2000 to 2007. The most healthy year was 2002, and the least healthy year was 2006; based on the maximum membership degree principle, the maximum membership degree in pressure group was 0.763 9 (2003), in state group was 0.722 4 (2000), and in response group was 1.0000 (2002); the maximum membership degree among all asseessed indicators was in 2002, with a probability of 32.15%.

【基金】 国家自然科学基金项目(40901081,40976021);南京大学国家大学生创新训练计划项目(XY101028444)
  • 【文献出处】 环境保护科学 ,Environmental Protection Science , 编辑部邮箱 ,2011年06期
  • 【分类号】X824
  • 【被引频次】6
  • 【下载频次】231
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