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Using check dam deposits to investigate recent changes in sediment yield in the Loess Plateau, China
Zhao, Tian-yin1; Yang, Ming-yi1,2; Walling, Des E.3; Zhang, Feng-bao1,2; Zhang, Jia-qiong1,2; Yang, MY (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Peoples R China.
SubtypeArticle
2017
Source PublicationGLOBAL AND PLANETARY CHANGE
ISSN0921-8181
description.correspondentemailmyyang@nwsuaf.edu.cn
Volume152Pages:88-98
AbstractCheck dams are one of the most important engineering measures for controlling soil and water loss from watersheds and can play a key role in reducing sediment loads in rivers. In addition, the associated sediment deposits can in some circumstances provide a valuable source of information on changing rates of sediment production from the upstream watershed through time. A sediment profile with a depth of 11.325 m was examined within the deposits associated with a check dam at the outlet of the Nianyangou catchment, in the northern Loess Plateau, China, with a drainage area of 0.181 km(2). The profile contained evidence of a total of 75 clearly identifiable flood event couplets, which corresponded to storm events occurring during the period 1960-1990. The variability of the grain size composition (clay content) of the sediment and its Cs-137 activity and organic matter (SOM) content down the profile was used to identify individual flood event couplets and the record of event rainfall (particularly extreme storm events) was used to establish a chronology for the individual flood event couplets. Based on the reservoir capacity curve and information on couplet thickness and sediment bulk density, the sediment yield associated with each flood couplet has been calculated. Using these data, annual sediment yields were estimated to range between zero in 1965 to 9750 tin 1984. The period from 1960 to 1990 was divided into three distinct phases based on evidence for changing rates of sediment production within the watershed above the check dam provided by a double mass plot of cumulative sediment yield versus cumulative precipitation. These phases represent the periods: 1960 to 1964, 1965 to 1983 and 1984 to 1990, which were characterized by mean annual specific sediment yields of 26,220 t km(-2) year(-1) 5590 t km(-2) year(-1) and 19,130 t km(-2) year(-1) respectively. This study is seen as demonstrating the potential for using the sediment deposits associated with check dams to obtain retrospective assessments of changes in sediment yield in repose to land use change and the implementation of soil conservation and sediment control measures. (C) 2017 Elsevier B.V. All rights reserved.
KeywordLoess Region Check Dams Flood Couplets Soil And Water Conservation Reconstructing Sediment Yields Land Use Change
Subject AreaPhysical Geography ; Geology
DOI10.1016/j.gloplacha.2017.03.003
URL查看原文
Indexed BySCI
Publication PlaceAMSTERDAM
Language英语
WOS IDWOS:000403626400009
PublisherELSEVIER SCIENCE BV
Funding OrganizationNational Natural Science Foundation of China [41671281, 41571130082, 41371283]; National Key Research and Development Program of China [2016YFC0402406] ; National Natural Science Foundation of China [41671281, 41571130082, 41371283]; National Key Research and Development Program of China [2016YFC0402406]
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Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/7995
Collection水保所科研产出--SCI_2017--SCI
Corresponding AuthorYang, MY (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Peoples R China.
Affiliation1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Peoples R China
2.Chinese Acad Sci, Minist Water Resources, Inst Soil & Water Conservat, Yangling, Peoples R China
3.Univ Exeter, Coll Life & Environm Sci, Geog, Amory Bldg,Rennes Dr, Exeter EX4 4RJ, Devon, England
Recommended Citation
GB/T 7714
Zhao, Tian-yin,Yang, Ming-yi,Walling, Des E.,et al. Using check dam deposits to investigate recent changes in sediment yield in the Loess Plateau, China[J]. GLOBAL AND PLANETARY CHANGE,2017,152:88-98.
APA Zhao, Tian-yin,Yang, Ming-yi,Walling, Des E.,Zhang, Feng-bao,Zhang, Jia-qiong,&Yang, MY .(2017).Using check dam deposits to investigate recent changes in sediment yield in the Loess Plateau, China.GLOBAL AND PLANETARY CHANGE,152,88-98.
MLA Zhao, Tian-yin,et al."Using check dam deposits to investigate recent changes in sediment yield in the Loess Plateau, China".GLOBAL AND PLANETARY CHANGE 152(2017):88-98.
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