Evaluation research on water resources carrying capacity based on improved matter-element extension model

According to the current situation of water resources in cities in Henan Province, this paper establishes the index system based on the principle of allocating the water resources reasonably for the development of agriculture, population, and industries. The water resources carrying capacity of cities in Henan Province from 2010 to 2020 was evaluated by the improved matter-element extension model along with improved entropy weight method and variation coefficient method, and suggestions were put forward for constraining towns by water resources from the perspective of spatial layout. According to the results: (1) the water resources carrying capacity of each city developed in a sound manner. 14 cities in Henan Provinces, including Zhengzhou, Kaifeng, Luoyang, Pingdingshan, Anyang, Hebi, Xinxiang, Jiaozuo, Puyang, Xuchang, Sanmenxia, Nanyang, Xinyang and Jiyuan showed a positive trajectory during the study period, Luohe showed the best performance, Zhoukou, Zhumadian had the worst performance and Shangqiu had a complicated performance. (2) In terms of the time dimension, the overall performed of water resources carrying capacity showed an increasing trend year by year. The results of the study can provide theoretical support for the further sustainable development of water resources in cities of Henan Province.

Automated summary

This paper establishes an index system based on the principle of allocating water resources reasonably, and evaluates the water resources carrying capacity of cities in Henan Province. The results show that the water resources carrying capacity of each city has developed in a sound manner and has shown an increasing trend year by year.