水土保持学报2025，Vol.39Issue(2)：200-208,217,10.DOI:10.13870/j.cnki.stbcxb.2025.02.019
赣江流域输沙时空变化特征及其影响因素分析
Spatiotemporal Variation Characteristics and Attribution Analysis of Sediment Transport in the Ganjiang River Basin
摘要
Abstract
[Objective]The aim of this study was to investigate the spatial and temporal variation of sediment transport in the Ganjiang River Basin,and to explore the contribution of climate change and human activities to sediment changes of the basin quantitatively,in order to provide a reference for soil erosion control,water and sediment resource management.[Methods]Data of sediment transport monitoring and precipitation history from 1960 to 2020 at 15 main hydrological observation stations located in upper,middle and lower reaches of the Ganjiang River Basin were collected.The spatial and temporal changes of sediment transport were analyzed by the linear trend method,Mann-Kendall trend test and Pettitt mutation test were used in combination with double mass curve to quantitatively analyze the contribution of the influencing factors.[Results]1)Annual sediment transport in the upper,middle and lower reaches of the Ganjiang River Basin showed a significant decreasing trend from 1960 to 2020(|Z|>2.58).The reduction rate of Waizhou,Xiajiang and four stations of the upper reaches were 2.143×105,1.661×105 and 0.812×105 t/a,respectively,and there were mutations in sediment transport in 1994,1992 and 1998.2)The multi-year average sediment transport modulus of the sub-basins were high in the south and low in the north,and the temporal variation showed a trend of increasing first and then decreasing in the upper reaches,and decreasing in the middle and lower reaches.Compared with 1960-1987,the average sediment transport modulus in the upper,middle and lower reaches decreased by 51.32%,104.95%and 105.03%,respectively from 2001 to 2020.3)The temporal and spatial variation of sediment load in the basin was affected by the topography,soil and water conservation measures,etc.Human activities were the leading factor for the reduction of sediment transport in the Ganjiang River Basin.[Conclusion]The sediment production from erosion in the Ganjiang River Basin has significantly reduced,but the upper reaches are still the key areas for soil erosion control in the future.关键词
输沙量/输沙模数/驱动因素/时空变化/赣江Key words
sediment load/sediment transport modulus/influencing factors/spatial and temporal variation/Ganjiang River Basin分类
天文与地球科学引用本文复制引用
杨程高歌,尤俊坚,王海鹏,田鹏,汤崇军,谢梅香,毕博,赵广举,耿韧,周璐..赣江流域输沙时空变化特征及其影响因素分析[J].水土保持学报,2025,39(2):200-208,217,10.基金项目
国家自然科学基金项目(42477377,U2243211) （42477377,U2243211）
安徽省自然科学基金项目(2308085US04) （2308085US04）
南京水利科学研究院中央级公益性科研院所基本科研业务费专项(Y923005,Y924003,Rc923003) （Y923005,Y924003,Rc923003）
江西省水利科学院开放研究基金项目(2023SKTR06) （2023SKTR06）
江西省重大专项(2022KSG01010) （2022KSG01010）
