摘要
为探究松花江流域近20 a水沙时空演变特征及影响因素,基于流域内具有代表性的4个水文站2003—2023年径流与输沙数据,采用M-K检验与归因分析,解释水沙演变与自然动力和人类活动的关系。结果表明:各代表站径流量均呈增长趋势,其中大赉站增幅最大,为4.6%,扶余站增幅最小,为2.5%;输沙量演变存在空间分异,扶余站下降9.7%,而其余3站均呈增长趋势,尤以大赉站增幅6.8%最为突出;影响松花江流域输沙变化的主要因素包括降雨量、水库调蓄及水土保持工程等,极端降水是流域输沙年际变化的主导驱动因素,人类活动则对松花江吉林段输沙量的下降起到主导作用。
To explore the spatiotemporal evolution characteristics and influencing factors of water and sediment in the Songhua River Basin in the past 20 a,based on the runoff and sediment transport data from four representative hydrological stations in the basin from 2003 to 2023,M-K test and attribution analysis were used to explain the relationship between water and sediment evolution,natural dynamics,and human activities.The results show that the runoff of each representative station shows an increasing trend,with Dalai station showing the largest increase of 4.6%and Fuyu station showing the smallest increase of 2.5%.There is spatial differentiation in the evolution of sediment transport volume,with a decrease of 9.7%at Fuyu Station,while the other three stations show an increasing trend,with the most prominent increase of 6.8%in Dalai Station.The main factors affecting sediment transport in the Songhua River Basin include rainfall,reservoir regulation,and soil and water conservation projects.Extreme precipitation is the dominant driving factor for the interannual variation of sediment transport in the basin,while human activities play a leading role in the decline of sediment transport in the second Songhua River.
作者
段延
邱丹
王帅
DUAN Yan;QIU Dan;WANG Shuai(Personnel Office,Changchun Institute of Technology,Changchun Jilin 130012,China)
出处
《长春工程学院学报(自然科学版)》
2025年第4期102-109,共8页
Journal of Changchun Institute of Technology:Natural Science Edition
基金
长春市哲学社会科学规划办课题(CSKT2025ZX-135)。
关键词
松花江
水沙演变
趋势分析
人类活动
Songhua River
evolution of water and sediment load
trend analysis
human activities
