Journal of Ecology and Rural Environment ›› 2011, Vol. 27 ›› Issue (5): 79-85.doi:

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Universal Index Formulae for Eco-Environment Quality Assessment Based on Normalized Index Transformation

ZHANG  Zheng-Jian, LI  Zuo-Yong, YU  Chun-Xue   

  1. Agricultural Meteorology Center of Sichuan Province
  • Received:2011-07-19 Online:2011-09-25 Published:2011-10-12
  • Contact: LI Zuo-Yong Chengdu University of Information Technology E-mail:lizuoyong@cuit.edu.cn

Abstract: In order to establish the universal index formulae, which should be scientific,reasonable,simple and practical in application to eco-environment quality assessment,based on determination of the eco-environment assessment index systems and grading standards for typical regions,proper reference values and transformation formulae were set for each eco-environment index,separately,so as to minimize defferences of the transformation values,especially logarithmic values of  the transformation values from the standard values of different indexes of the same grade.Thus,the various indexes expressed by transformation values can be held to be equivalent to a certain index.Therefore,various types of eco-environment quality assessment index formulae with transformantion values expressing various indices can all be replaced by eco-environment quality assessment index formulae of corresponding "equivalent"indices.Meanwhile universal parameters in each formula were optimized repeatedly with the immune evolutionary-particle swarm optimization-shuffled frog leaping algorithm under the condition that certain optimization objective criteria were satisfied.As a resuly,5 forms of eco-environment quality assessment universal index formulae were gained,i.e.logarithmic power function,Weber-Fechner law,Γ distribution function,pollution harm S-type function and weighted additive power function,which are applicable to 23 items of eco-environment indices after optimization.Furthermore,reliabilities of 5 formulae were analyzed theoretically and tested by practice.

Key words: index, normalized transformation, ecology environment quality assessment, universality, index formula

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