A county-scale assessment of ecosystem health in the Three Gorges Reservoir area based on catastrophe theory

Frontiers in Environmental Science

Environmental Science

Chuanhao Wen¹  Wangying Xie²  Yi Li²  Ying Chen³  Yiqiu Zhao⁴  Jia He⁴ 

[1] College of Economics, Yunnan University, Kunming, China;Research Center for Economic of Upper Reaches of Yangtze River, Chongqing Technology and Business University, Chongqing, China;School of Accounting, Chongqing Finance and Economics College, Chongqing, China;School of Economics, Chongqing Technology and Business University, Chongqing, China;

关键词: catastrophe theory;    ecosystem health;    evaluation model;    change trend;    Three Gorges Reservoir area;    CPM;   

DOI  :  10.3389/fenvs.2023.1073416

 received in 2022-10-18, accepted in 2023-01-16,  发布年份 2023

来源: Frontiers

【 摘 要 】

The integrity and health of the ecosystem is the material basis for the common prosperity of different minority areas. Since the acceleration of social and economic growth in the 21st century, excessive social development has caused ecological imbalance, climate change and environmental pollution and other problems. The irrational use of natural resources gradually affects the balance between man and nature. In this paper, the characteristics of ecosystem health and four sub-systems of environment, economy, society and management in the Three Gorges Reservoir area are selected to study. The purpose of this paper is to construct an ecosystem health evaluation index system to describe the characteristics of the ecosystem in the Three Gorges Reservoir area. Firstly, a multi-criteria evaluation model was established based on catastrophe theory to evaluate the health of the ecosystem in the Three Gorges Reservoir area. Secondly, the Catastrophe progression method (CPM) was used to describe the overall change trend of the ecosystem in the Three Gorges Reservoir area from 2000 to 2016. The study shows that since 2000, with the development of economy and society and the further strengthening of environmental management, the health of the ecosystem in the Three Gorges Reservoir area has been improved year by year. At the same time, in order to further explore the factors affecting the ecosystem health of the reservoir, the climate factors were added to the control variables, and the model regression analysis was established through panel data. The final conclusion was that the average temperature, rainfall and sunshine time had significant effects on the ecosystem of the reservoir.

【 授权许可】

Unknown   
Copyright © 2023 Xie, Li, Zhao, Chen, He and Wen.