Ecological security evaluation and early warning in the water source area of the Middle Route of South-to-North Water Diversion Project

Ken Sun; Wenbo He; Yufang Shen; Tianshu Yan; Chang Liu; Zhenzhen Yang; Jingmin Han; Weisheng Xie

doi:10.1016/j.scitotenv.2023.161561

Ecological security evaluation and early warning in the water source area of the Middle Route of South-to-North Water Diversion Project

Sci Total Environ. 2023 Apr 10:868:161561. doi: 10.1016/j.scitotenv.2023.161561. Epub 2023 Jan 19.

Authors

Ken Sun¹, Wenbo He², Yufang Shen², Tianshu Yan², Chang Liu³, Zhenzhen Yang³, Jingmin Han², Weisheng Xie²

Affiliations

¹ College of Energy and Power Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, China. Electronic address: sunken0371@126.com.
² College of Water Resources, North China University of Water Resources and Electric Power, Zhengzhou 450046, China.
³ School of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, China.

PMID: 36682550
DOI: 10.1016/j.scitotenv.2023.161561

Abstract

Ecological security has important influence on regional sustainable development. The ecological security of Nanyang, the water source area of the Middle Route of South-to-North Water Diversion Project, was threatened because of surface water pollution. The existing studies had not been able to comprehensively assess the ecological security and future trend of water source area. In order to promote the high-quality development of the follow-up projects of the South-to-North Water Diversion project, it is very important to probe into the current situation and predict the future trend of ecological security in the water source area. Therefore, this paper constructed an ecological security evaluation index system based on the Driving force, Pressure, State, Impact and Response (DPSIR) model, used the combination of Analytic Hierarchy Process and- entropy weighting method to evaluate the ecological security of each district and county in Nanyang from 2000 to 2020, and used the auto regressive integrated moving average (ARIMA) model to predict the ecological security of the water source area from 2021 to 2030. The results demonstrated that: (1) The ecological security of Nanyang had changed from a moderate warning to a general safety, and the ecological security index had improved. The ecological security level of Nanyang would improve continuously from 2021 to 2030. (2) The northwest area and the central area of Nanyang had better ecological security states, while the southeast area wasn't so. Based on the results, the countermeasures for improving ecological security were proposed.

Keywords: ARIMA model; DPSIR model; Early warning; Ecological security evaluation.