In this paper we assessed the ecological benefit of the South-to-North Water Diversion Project to its water-receiving areas.Focusing on forest land,green spaces,wetlands,surface water and groundwater ecosystems,we constructed a system of evaluation indexes for the ecological benefits and propose an easy-to-operate method for assessing the ecological benefits.Based on the administrative division of the water-receiving areas of phase Ⅰ of the middle route of South-to-North Water Diversion Project,we evaluated the values of ecological benefits,generated by the project's water transfer in Beijing,Tianjin,11 counties and cities in Henan Province,and 6 counties and cities in Hebei Province.The assessment covers the first four years following the initiation of water transfer.Results reveal that newly generated surface water areas represent the largest proportion of ecological benefits,reaching 48.46%.Eco-benefit values per square meter vary across different receiving areas,with the ratio of ecological benefits to Beijing,Tianjin,Henan and Hebei roughly as 1︰1.7︰1︰3.2 in 2015-2018.This study serves as a reference for the formulation of ecological water use plans in the project's receiving areas and supports further explorations on the approaches of the project's ecological benefits,eco-environmental restoration and protection,and ecological compensation for the South-to-North Water Diversion Project.
关键词
南水北调中线工程/生态效益/指标体系/量化评估
Key words
Middle Route of the South-to-North Water Diversion Project/ecological benefit/index system/quantitative evaluation
维普
万方数据