Study on Water Resources Carrying Capacity Based on Improved Projection Pursuit Method
In order to solve the issues of high-dimensional and nonlinear in the classification and evaluation of water resources carrying capac-ity,and to improve the accuracy of the water resources carrying capacity classification and evaluation model,an improved projection pursuit method based on the maximum information entropy principle was proposed.The density window width R in the model had been improved,and a reasonable value for the density window width had been derived.The model had been applied to the evaluation of water resources carrying capacity in Jining City from 2010 to 2018.The grey GM(1,1)model was established to predict the state of water resources carrying capacity in Jining City from 2019 to 2025,and the prediction results were consistent with the actual situation.The results show that the evaluation lev-el of water resources carrying capacity in Jining City from 2010 to 2017 is level Ⅲ,and the evaluation level of water resources carrying ca-pacity in 2018 is levelⅡ.It is predicted that the water resources carrying capacity of Jining City will be levelⅡfrom 2019 to 2025,and the overall water resources carrying capacity status will remain good.By analyzing the impact of various evaluation indicators on water resources carrying capacity,relevant suggestions are proposed to improve the city's water resources carrying capacity.
water resources carrying capacityprojection pursuitdensity window widthJining City
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