An Evaluation of Water Environment Security Based on Fuzzy Hierarchy Entropy for Trans-basin Water Transfer Projects

The information entropy theory is introduced to combine the traditional analytic hierarchy process and fuzzy comprehensive assessment method to establish a fuzzy AHP-IE comprehensive assessment model.In the model,the three indexes: pollution sources,water quality,zoology are used to establish a comprehensive assessment index system for water environment security assessment of trans-basin water transfer project.An entropy model which can evaluate the quality of information given by evaluation specialists is established,to amend the index subjective weight given by specialists through the analytic hierarchy process.The combination weight decreases the subjectivity of weight decision effectively.Its application in Luanhe-Tianjin Diversion Project indicates that the proposed method is reliable and practical.