人民长江2026，Vol.57Issue(6)：99-107,9.DOI:10.16232/j.cnki.1001-4179.2026.06.011
金沙江攀枝花河段梯级开发水温响应研究
Water temperature response to cascade development in Panzhihua Reach of Jinsha River
摘要
Abstract
Hydropower development in the Jinsha River Basin has altered the natural thermal regime of the river,thereby ad-versely affecting the habitat of aquatic organisms.To investigate the water temperature response to cascade development in the Panzhihua Reach of the Jinsha River,water temperature data from the Panzhihua and Sanduizi hydrological stations were analyzed by trend tests,piecewise linear regression,and regression discontinuity design methods.The study examined the interannual,intra-annual,and longitudinal variations of water temperature in the Panzhihua Reach,with a focus on assessing the impact of im-poundment by the Guanyinyan Reservoir and other cascade reservoirs(referred to as Guanyinyan impoundment)on water temper-ature downstream of the dam.The results showed that:① Over the past 50 years,the mean annual water temperature in the Pan-zhihua Reach increased significantly(P<0.05).After2012,the longitudinal trend of water temperature exhibited a significant turning point,with water temperature upstream of the Yalong River confluence being significantly higher than that downstream of the confluence.② Guanyinyan impoundment exerted a significant impact on water temperature downstream of the dam(P<0.05).Specifically,the intra-annual distribution of water temperature tended to flatten,with a pronounced"heat retention effect"in autumn and winter and a pronounced"cold retention effect"in spring and summer.The degree of temperature flattening downstream of the Yalong River confluence was greater than that upstream of the confluence.These findings provide scientific ba-sis for ecological dispatching and the protection of fish breeding and habitat environments.关键词
水温/Mann-Kendall趋势检验/断点回归设计/雅砻江汇口/观音岩水库/金沙江攀枝花河段Key words
water temperature/Mann-Kendall trend test/regression discontinuity design/Yalong River-Jinsha River con-fluence/Guanyinyan Reservoir/Panzhihua Reach of the Jinsha River分类
资源环境引用本文复制引用
陈军,尹涛,唐亚松,刘颖,钱斌天,武文亮..金沙江攀枝花河段梯级开发水温响应研究[J].人民长江,2026,57(6):99-107,9.基金项目
云南省科技人才与平台计划项目(202305AK340003) （202305AK340003）
云南省重点研发计划项目(20223AA080010) （20223AA080010）
中国电建集团昆明勘测设计研究院有限公司科技项目(KD-ZDYF2024-016) （KD-ZDYF2024-016）
