Research on numerical simulation and theoretical method of water resources carrying capacity

In this paper, 11 indexes were selected from three aspects: water resources environment, economy and society to construct the evaluation index system, and the main component analysis method was used to comprehensively evaluate the carrying capacity of water resources in Henan province for the past three years. The research results show that: 1. During the current period, the carrying capacity of water resources in Henan Province has been steadily increasing. The cities with good carrying capacity of water resources are: Zhengzhou, Luoyang, Xinxiang and Nanyang; Cities with better water resources capacity include Kaifeng, Pingdingshan, Anyang, Jiaozuo and Xinyang; The remaining cities have general water resources carrying capacity; The contribution of each subsystem to the integrated carrying capacity of water resources is increasing year by year, among which the contribution of water resources environmental subsystem and economic subsystem is the largest and the contribution of social subsystem is relatively stable. The conclusion shows that the development level of Waterscape tourism industry in Zhengzhou, Luoyang, Kaifeng, Jiaozuo and other areas is higher, while the Waterscape tourism industry in Luohe, Xuchang, Zhoukou and other areas is lower. The development level of Waterscape tourism industry in Henan Province from the view of the overall spatial pattern is higher. The water resources management and utilization level of henan is relatively high. © 2020 Trans Tech Publications Ltd, Switzerland.