摘要
为了建立简便、实用的生态环境质量评价模型,在构建生态环境评价指标体系的基础上,设定各指标的参照值和规范变换式,使规范变换后的不同指标同级标准的规范值差异不大。进而提出了一个对多项指标的规范值都适用的生态环境质量评价的韦伯-费希纳(W-F)指数公式。采用混合蛙跳算法对公式的参数进行优化,得出优化后对多项指标皆适用的生态环境质量评价的W-F指数公式。运用该公式对巢湖流域的生态环境质量进行评价,其结果与该流域生态环境质量实际情况基本相符,表明模型有一定的实用性。
To build up a simple practical model for eco-environment quality evaluation,based on the set eco-environment evaluation index system,reference values and equation for normalization transformation of various indexes were set up,thus narrowing the differences between different indexes at the same level of standard after the normalization transformation.On such a basis,a modified Weber-Fechner（W-F） index formula that fits the normalized values of a number of indexes in evaluation of eco-environment quality was brought forth.Parameters of the formula were optimized with the shuffled frog leaping algorithm（SFLA）,making the formula applicable to a number of items of indexes in evaluation of eco-environment quality.Furthermore,this formula was applied to practical assessment of the eco-environment quality of the Chaohu Lake watershed.The assessment results were proved to be basically in conformity with the reality,indicating that this formula is a practical one for eco-environment quality assessment.
出处
《生态与农村环境学报》
CAS
CSSCI
CSCD
北大核心
2010年第5期497-501,共5页
Journal of Ecology and Rural Environment
基金
科技基础性工作专项(2009IM020100)
国家自然科学基金重点项目(50739002)
关键词
生态环境质量评价
韦伯-费希纳定律
混合蛙跳算法
指数公式
巢湖流域
eco-environment quality assessment
Weber-Fischna law
shuffled frog leaping algorithm（SFLA）
index formula
Chaohu Lake watershed
