Application of Partial Connection Number and Subtraction Set Pair Potential in Evaluation of Development Trend of Water Environment Bearing State

Aiming at the uncertainty between evaluation samples and standards in of water environment carrying capacity, a five-element connection coefficient model for capacity based on set pair analysis theory is constructed, partial method subtractive potential are used. The development trend state was analyzed, used dynamic HJ City. results show that city 2015-2021 grades IV III, poor, but overall developing from antipodal to homogeneous, showing better. According comprehensive index results, targeted suggestions improving put forward. From analysis, it can be seen above reasonable reliable, intuitive simple, which provide reference basis improvement regional quality.