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Multiscale temporal variability of flow-sediment relationships during the 1950s-2014 in the Loess Plateau, China

文献类型：期刊论文

作者Gao, Guangyao1,2; Fu, Bojie1,2; Zhang, Jianjun1; Ma, Ying3; Sivapalan, Murugesu4,5
刊名JOURNAL OF HYDROLOGY
出版日期2018-08-01
卷号563页码:609-619
关键词Flow-sediment relationship Time dependence Land use/cover change Ecological restoration Loess Plateau
ISSN号0022-1694
DOI10.1016/j.jhydrol.2018.06.044
通讯作者Fu, Bojie(bfu@rcees.ac.cn)
英文摘要Flow-sediment relationships provide insights into the erosion and transport of materials within catchments. Investigating the flow-sediment relationships across multiple timescales can reveal trends related to the effects of natural and human-caused changes to catchments. This study chose fourteen main catchments in the Loess Plateau of China, which are the major sediment sources of Yellow River, to extract the temporal patterns of flow-sediment relationships during the 1950s-2014 period. The study revealed quantifiable effects of land use/cover changes (LUCC) on the variability of flow-sediment relationships. The LUCC induced by the soil and water conservation measures (SWCMs) during 1970-1999 and vegetation restoration campaign since 2000 resulted in significant reductions of annual streamflow, sediment yield and sediment concentration. The mean daily sediment concentration under different flow conditions also decreased greatly. The flow-sediment relationships revealed time dependence over different stages and time scales. Before 2000, the annual and monthly flow-sediment relationships could be generally characterized by the linear functions, and the power-law sediment rating curve was able to describe the daily flow-sediment relationship. As vegetation restoration campaign took effect, the flow-sediment relationship became much weaker, which could not be described by a clear relationship. This suggests that the variability of flow-sediment relationships over the entire period was mainly regulated by the vegetation restoration campaign. In addition, the sediment concentration exhibited a linear decreasing relationship with the area under land use/cover treatment. In this way, the study has brought out the roles of ecological restoration measures in controlling the temporal variability of flow-sediment relationships at the catchment scale.
WOS关键词SUSPENDED-SEDIMENT ; YELLOW-RIVER ; MIDDLE REACHES ; VEGETATION RESTORATION ; CLIMATE VARIABILITY ; WATER DISCHARGE ; RATING CURVES ; SOIL-EROSION ; HILLY AREAS ; STREAMFLOW
资助项目National Key Research and Development Program of China[2017YFA0604703] ; National Natural Science Foundation of China[41471094] ; Chinese Academy of Sciences[QYZDY-SSW-DQCO25] ; Youth Innovation Promotion Association CAS[2016040]
WOS研究方向Engineering ; Geology ; Water Resources
语种英语
WOS记录号WOS:000441492700049
出版者ELSEVIER SCIENCE BV
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS
源URL[http://ir.igsnrr.ac.cn/handle/311030/54443]  
专题中国科学院地理科学与资源研究所
通讯作者Fu, Bojie
作者单位1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
4.Univ Illinois, Dept Geog & Geog Informat Sci, Urbana, IL 61801 USA
5.Univ Illinois, Dept Civil & Environm Engn, Urbana, IL 61801 USA
推荐引用方式
GB/T 7714		 Gao, Guangyao,Fu, Bojie,Zhang, Jianjun,et al. Multiscale temporal variability of flow-sediment relationships during the 1950s-2014 in the Loess Plateau, China[J]. JOURNAL OF HYDROLOGY,2018,563:609-619.
APA Gao, Guangyao,Fu, Bojie,Zhang, Jianjun,Ma, Ying,&Sivapalan, Murugesu.(2018).Multiscale temporal variability of flow-sediment relationships during the 1950s-2014 in the Loess Plateau, China.JOURNAL OF HYDROLOGY,563,609-619.
MLA Gao, Guangyao,et al."Multiscale temporal variability of flow-sediment relationships during the 1950s-2014 in the Loess Plateau, China".JOURNAL OF HYDROLOGY 563(2018):609-619.

入库方式： OAI收割

来源：地理科学与资源研究所

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