水资源与水工程学报2025，Vol.36Issue(5)：9-17,28,10.DOI:10.11705/j.issn.1672-643X.2025.05.02
南水北调中线海河流域受水区用水对水汽再循环率的贡献分析
Contribution of water use to water vapor recirculation rate in the water-receiving area of the Haihe River Basin in the Middle Route of the South-to-North Water Diversion Project
摘要
Abstract
The implementation of the Middle Route of the South-to-North Water Diversion Project has a great impact on the water vapor recirculation process and water cycle mechanisms in the water-receiving areas.To investigate the impact,the ERA5 reanalysis data from 2000 to 2022 and water resources bulle-tin data of four provinces and municipalities in the water-receiving areas were used for the analysis.We calculated the water vapor recirculation rate,analyzed its spatiotemporal trends and the influencing factors using Brubaker binary model,and further examined the contributions of different sectors to water vapor recirculation rates from the water use perspective.The results indicate that precipitation and actual evapo-transpiration in the study area decreased during 2000-2022,while water vapor input increased.The wa-ter vapor recirculation rate showed an overall downward trend,with a reduction rate of 0.54‰/a,which accelerated after the water diversion.After the implementation of the Middle Route of the South-to-North Water Diversion Project,the water vapor generated by water diversion primarily entered from the western,northern,and southern boundaries,and exited from the eastern boundary.The enhanced external water vapor input caused the water vapor recirculation rates in all cities to decrease to varying degrees,with a greater impact on water vapor input regions.The water vapor recirculation rates of the agricultural and in-dustrial sectors in the study area showed a decreasing trend from 2000 to 2022 and prior to water diver-sion,while those of the residential and ecological sectors showed an increasing trend.After water diver-sion,the water vapor recirculation rate in the ecological sector increased significantly at 1.37‰per year,representing an increase of 0.84%compared with pre-diversion levels.Meanwhile,the water vapor recir-culation rate in the agricultural sector decreased by 1.39%,which is greater than the overall level(0.57%)and that in the industrial sector(0.17%).关键词
南水北调中线工程/受水区/部门/水汽再循环率/贡献率/海河流域Key words
the Middle Route of the South-to-North Water Diversion Project/water-receiving area/sec-tor/water vapor recirculation rate/contribution rate/the Haihe River Basin分类
建筑与水利引用本文复制引用
崔云斐,刘沁,张金萍,王伟..南水北调中线海河流域受水区用水对水汽再循环率的贡献分析[J].水资源与水工程学报,2025,36(5):9-17,28,10.基金项目
国家重点研发计划项目(2021YFC3200205) （2021YFC3200205）
