Construction and Application of Groundwater Environmental Health Assessment Model Based on Entropy Weight and Fuzzy Matter Element

Abstract

Groundwater overdraft has become a major challenge, most serious in northwestern and northern China. A series of environmental geological problems caused by groundwater overdraft will be more extreme, which restrict the development of society. In this study, matter-element theory is introduced. Moreover, a matter-element evaluation model is established, and a matter-element evaluation algorithm based on fuzzy entropy weight is proposed. The algorithm takes nature, environment, economy and society as the characteristic indexes of the evaluation category. Four kinds of typical regions were chosen including Core Economic Zone (A), Bearing Industry and Trade Economic Zone (B), Agricultural Machinery and Trade Economic Zone (C) and Ecological Agricultural Economic Zone (D) as the study region. The risk assessment of groundwater is evaluated using the groundwater environmental health assessment model in this study. The results showed that the constructed model can be used for the assessment of environment health of groundwater successfully. The simulation results showed that the groundwater was in a medium health state in Linqing City. The results showed that groundwater environment of ‘healthy’ state of nearness concentrated between 0.2 and 0.4. The descending order for typical regions groundwater environment ‘healthy’ state of nearness from high to low are B, D, A, and C.