黄河河龙区间输沙量时空突变特征及驱动因素分析

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中图分类号：P333；TV882.1

文献标志码：A

doi：10.3969/j.issn.1000-1379.2026.05.007

引用格式： ， ， . 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.

Analysis of the Spatiotemporal Abrupt Change Characteristics and Driving Factors of Sediment Transport in the He-Long Section of the Yellow River

ZHANG Dan 1 ， DUAN Hongtao 1，2 ， GUO Xingjian 1，2

College of Urban and Environmental Sciences， Northwest University， Xi'an 710127， China;

2. Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity， Northwest University， Xi'an 710127， China） Abstract： The He-Long Region （Hekouzhen to Longmen） of the middle reaches of the Yellow River is a major source of sediment for the entire 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 abrupt 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 transport， 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 period （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.

Key words： sediment transport; abrupt change pattern; climate change; human activity; contribution rate; He-Long Region

0 引言

黄河是中华文明的发源地之一，承载着丰富的水土资源，也是连接西北高原与东部渤海的重要生态廊道 [1] 。（剩余14574字）