IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Use of reservoir deposits to reconstruct the recent changes in sediment yields from a small granite catchment in the Yimeng Mountain region, China
Zhang, Yunqi1,2; Long, Yi3; Li, Bao2; Xu, Shujian2; Wang, Xiaoli2; Liao, Jia1
Corresponding AuthorYunqi Zhang
2017-09-15
Source PublicationGEOMORPHOLOGY
ISSN0169-555X
Volume293Pages:167-177
SubtypeArticle
Abstract

Information on recent changes in sediment yields from small catchments provides a better understanding of temporal trends in soil loss from certain physical and human-influenced landscapes that have been subjected to recent environmental changes, and will help bridge the current knowledge gap that exists between hillslope erosion and sediment transport in rivers. The Yimeng Mountain region, characterized by alternating granite and limestone, is one of the most susceptible regions to soil erosion in northern China, and has been subjected to intensive anthropogenic activity in recent years. Soil loss from areas underlain by granite is particularly obvious, and is the main sediment source for the Yihe River. In this study, we used reservoir deposits to estimate the changes in sediment yields over the past similar to 50 years from a small catchment underlain by granite, namely the Jiangzhuang catchment in the Yimeng Mountain region. Three cores were collected from the Jiangzhuang Reservoir in the catchment. The activities of Cs-137 and Pb-210(ex) at different depths, clay (grain size < 5 mu m) contents, and sedimentary organic carbon (SOC) contents in the cores were analysed with reference to human activity and environmental change in the catchment. The chronologies of the cores were established by 137Cs and 210Pbex dating. The area-specific sediment yield (SSY) for different time periods since dam construction was estimated from each core by referring to the original capacity curve of the reservoir. The results indicate that the depth profiles of (CS)-C-137, Pb-210(ex), clay, and SOC contents in cores from the Jiangzhuang Reservoir reflect the general history of human disturbances on the catchment over the past similar to 50 years. The estimated SSY value from each core for each period ranged from 7.2 +/- 2.7 to 23.7 +/- 8.3 t ha(-1) y(-1), with a mean of 12.5 +/- 4.6 t ha(-1) y(-1). SSY decreased during 1954-1972, and then showed a general tendency to increase. The temporal pattern of the sediment yield largely reflects the history of environmental change influenced by human activity in the catchment.

KeywordYimeng Mountain Region Small Granite Catchment Sediment Yield Human Disturbance
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.geomorph.2017.05.017
WOS Subject ExtendedPhysical Geography ; Geology
Indexed BySCI
WOS KeywordCONTOUR RIDGING SYSTEMS ; SOIL-EROSION PROCESSES ; LOESS PLATEAU ; OVERBANK SEDIMENTATION ; SPATIAL-PATTERNS ; NORTH CHINA ; LAND-USE ; CULTIVATED LAND ; FALLOUT PB-210 ; LAKE-SEDIMENTS
Language英语
Quartile2区
TOP
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000412257100013
Funding OrganizationNational Natural Sciences Foundation of China(41671277 ; 41102224)
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/19151
Collection山地表生过程与生态调控重点实验室
Affiliation1.Sichuan Agr Univ, Coll Forest, 211 Huimin Rd, Chengdu 611130, Sichuan, Peoples R China
2.Linyi Univ, Shandong Prov Key Lab Water & Soil Conservat & En, Linyi 276005, Shandong, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Yunqi,Long, Yi,Li, Bao,et al. Use of reservoir deposits to reconstruct the recent changes in sediment yields from a small granite catchment in the Yimeng Mountain region, China[J]. GEOMORPHOLOGY,2017,293:167-177.
APA Zhang, Yunqi,Long, Yi,Li, Bao,Xu, Shujian,Wang, Xiaoli,&Liao, Jia.(2017).Use of reservoir deposits to reconstruct the recent changes in sediment yields from a small granite catchment in the Yimeng Mountain region, China.GEOMORPHOLOGY,293,167-177.
MLA Zhang, Yunqi,et al."Use of reservoir deposits to reconstruct the recent changes in sediment yields from a small granite catchment in the Yimeng Mountain region, China".GEOMORPHOLOGY 293(2017):167-177.
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