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《Journal of Arid Land Resources and Environment》 2010-04
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Determination of weight of polluted factors and grading standards of comprehensive assessment of regional environmental quality:A case of soil heavy metal pollution

LI Xuemei1,2,DENG Xiaowen3,WANG Zuwei4,HUANG Suiliang2(1.Department of Management Engineering,Tianjin Institute of Urban Construction,Tianjin 300384,P.R.China;2.College of Environmental Science and Engineering,Nankai University,Tianjin 300071,P.R.China;3.Tianjin Research Institute of Environmental Protecction,Tianjin 300074,P.R.China;4.College of Urban and Environment Science,Tianjin Normal University,Tianjin 300074,P.R.China)  
A unified approach,referred to system classification based AHP,was presented for determine the grading standards of comprehensive assessment of regional environmental quality.Taking Tianjin suburb as a case study,we calculated the weight of the factor in contaminated soils with AHP method based on the national sanitary standard for crops,and applicated in weighted average comprehensive index model.Comparison of the result of Nemero index,fuzzy comprehensive evaluation,gray clustering method and the weighted average comprehensive index model based improved AHP,we found that the evaluation results were more objective and more precise,and applied this weight on system classification to determination the grading standards of comprehensive assessment of regional environmental quality in Tianjin.The results showed that this method also can be applied to determine the grading standards of other things by pollutants in comprehensive assessment of regional environmental quality.
【Fund】: 天津市教委青年基金(20072115);; 天津市建委软项目(2007-软56);; 国家自然科学基金(40973078);; 天津自然科学基金(08JCYBJC10400)资助
【CateGory Index】: X825
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