人民黄河2026，Vol.48Issue(5)：42-49,8.DOI:10.3969/j.issn.1000-1379.2026.05.007
黄河河龙区间输沙量时空突变特征及驱动因素分析
Analysis of the Spatiotemporal Abrupt Change Characteristics and Driving Factors of Sediment Transport in the He-Long Section of the Yellow River
摘要
Abstract
The He-Long Region(Hekouzhen to Longmen)of the middle reaches of the Yellow River is a major source of sediment for the en-tire river.Understanding the spatiotemporal abrupt changes in sediment transport and the underlying driving factors is crucial for optimizing water resource utilization and developing a scientific water-sediment regulation system for the middle reaches of the Yellow River.Based on sediment transport data from 22 sub-basins in the He-Long Region between 1955 and 2016,this study analyzed change trends and time of ab-rupt changes in sediment transport during the study period,and further explored the contribution rates of climate change and human activities to sediment reduction.The results showed that:21 sub-basins in the study showed a significant decreasing trend in annual sediment trans-port,with abrupt changes occurring primarily in the 1980s and 1990s.The spatial distribution characteristics of annual sediment load in the He-Long reach were fundamentally consistent between the baseline period(P1)before the change point and the human-activity-impacted pe-riod(P2)after it,with a significant reduction occurring in P2.The primary sediment-producing areas were concentrated in the Wuding River and Kuye River Basins.The average contribution rates of precipitation and human activities to sediment reduction of 22 tributaries were 24.42%and 75.58%,respectively,with large-scale soil and water conservation project constructions being the primary driver of sediment reduction.关键词
输沙量/突变规律/气候变化/人类活动/贡献率/河龙区间Key words
sediment transport/abrupt change pattern/climate change/human activity/contribution rate/He-Long Region分类
天文与地球科学引用本文复制引用
张丹,段洪涛,郭兴健..黄河河龙区间输沙量时空突变特征及驱动因素分析[J].人民黄河,2026,48(5):42-49,8.基金项目
国家自然科学基金资助项目(U2243205) （U2243205）
陕西省教育厅一般专项基金资助项目(21JK0928) （21JK0928）
