Fuzzy Synthetic Evaluation of Cross-border Atmospheric Environment Risk Source Based on Entropy and AHP
Shushen Zhang · Chinese Journal of Population Resources and Environment · 2010
Improving the objectivity and the veracity of classification evaluation results of cross-border emergent atmospheric environment risk sources is available for a rational allocation of limited human,material and information resources next,and is also available for reference to classified monitor environment risk sources in real time.Combining the Analytic Hierarchy Process(AHP),the entropy with the fuzzy mathematics,a method of cross-border emergent atmospheric environment risk sources synthetic evaluation is proposed.At first the subjective weights are obtained by constructing the judgment matrix of AHP;then by means of the entropy weight the subjective weights is amended,and the synthetic weights are formed;at last the extend of harm from the atomspheric environmental risk sources is evaluated synthetically by the fuzzy synthetic evaluation method and the risk levels of cross-border emergent atmospheric environment risk sources are obtained.In order to make the result of evaluation more objective,scientific and reasonable,the entropy weight is put forward to adjust the weight,which is given by subjective method.The method has been used to evaluate the risk grades for three examples,a 30-tonne liquid chlorine storage tank from T Chemical Co.Ltd,an 8-tonne liquid chlorine storage tank from X Chemistry plant and an 200-tonne liquid ammonia storage tank from S Chemistry plant in Dalian City,where the incident considered is an instant explosion.