Author(s): Gao Yuanyuan; Yang Yafeng; Yang Rongxue
Linked Author(s):
Keywords: No Keywords
Abstract: The South-North Water Diversion Project is an important strategic infrastructure for optimizing the allocation of water resources, promoting sustainable economic and social development, and improving people’s livelihood. Phase I of the East Route of South-to-North Water Diversion Project (hereinafter referred to as Phase I) has been in operation for nearly 10 years. As of the end of June 2023, a total of 6.139 billion m3 of water has been transferred to Shandong, which has brought remarkable economic and social benefits and ecological and environmental benefits. Scientific analysis of the eco-environmental benefit evolution of phase I is conducive to the high-quality promotion of subsequent projects and the high-quality development of economy and society. To analyze the evolution characteristics of eco-environmental benefits of the phase I, this study analyzed the role of phase I in optimizing water resources allocation, ensuring drinking water safety for the masses, reviving the eco-environment of rivers and lakes, and smoothing the North-South economic cycle by combining qualitative and quantitative methods. The indicators, such as annual water supply, water quality improvement, ecological replenishment, groundwater pressure recovery, groundwater level, water area, green area, water conservation, were selected, and the ecological benefit evaluation indicator system of the phase I was established. On this basis, the eco-environmental benefit evolution analysis method of the phase I was established based on VIKOR compromise solution ranking method, considering the incongruity between multiple indexes. The constructed evaluation indicator system and evolution analysis method are applied to calculate and analyze the evolution situation of eco-environmental benefits of the phase I from 2013 to 2022. The results show that: The overall benefits have been gradually increasing since the opening of water supply, reaching a peak in 2020, and then basically stabilizing. The phase I has promoted the recovery of underground water pressure and water level, and the pollution control and water quality protection along the route have also effectively improved the water quality of rivers and lakes, which have improved the eco-environment along the route to a certain extent. The eco-environment benefits are brought into play. The phase I has produced sustained benefits in water resources protection and water ecological restoration.
Year: 2024