ISWC OpenIR  > 水保所科研产出--SCI  > 2017--SCI
Impacts of topography on sediment discharge in Loess Plateau, China
Cheng, N. N.1,2; He, H. M.1,2; Yang, S. Y.4; Lu, Y. J.1,2; Jing, Z. W.5; He, HM (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi Provinc, Peoples R China.
SubtypeArticle
2017
Source PublicationQUATERNARY INTERNATIONAL
ISSN1040-6182
description.correspondentemailhongming.he@yahoo.com
Volume440Pages:119-129
AbstractGeomorphologic characteristics of a basin affect mass movement, water and sediment transport. The purpose of this study is to examine coupling relationship between topography and soil erosion in Loess Plateau during past 50 years (1960-2011). We firstly describe the distribution patterns of topographic characteristics and sediment discharge in specific river basins. By using mathematical methods (PCA method, linear regression and ANOVA analysis) and topographic variables, we build a comprehensive index Erosion Topography Index (ETI). According to the research, the following findings are obtained. Firstly, average sediment discharge varies from 0.13 x 10(8) t to 7.56 x 10(8) t along the Yellow River from the upper-stream to down-stream. The sediment discharge of this region decreased 60%-90% since the year of 1980, and decrease tendency is more obvious after the year 2000 compared to the period of 1980-2011. Secondly, topographic characteristics and the Erosion Topography Index has similar distribution pattern. Thirdly, there is no significant linear correlation between ETI and all four sediment discharge variables (average sediment, total sediment, sediment of 1980-2011, and sediment of 2000-2011), but there are significant positive linear correlations (p < 0.05) between ETI and each sediment discharge variable. Furthermore, the correlation between ETI and sediment of 2000-2011 is stronger (p = 0.035) than other variables, and the gradient coefficient of them is higher (k = 0.667) than other variables too. Except the topographic characteristics, the vegetation coverage and human activities should be other factors that can influence the variations of sediment discharge in Loss Plateau. (C) 2017 Elsevier Ltd and INQUA. All rights reserved.
KeywordPrincipal Components Analysis Linear Regression Soil Erosion Sediment Discharge Topographic Characteristics Loess Plateau
Subject AreaPhysical Geography ; Geology
DOI10.1016/j.quaint.2016.12.005
URL查看原文
Indexed BySCI
Publication PlaceOXFORD
Language英语
WOS IDWOS:000404311300013
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Funding OrganizationNational Natural Science Foundation of China [41672180]; Hundred-Talent Project of the Chinese Academy of Sciences [20110009]; key Research Program of Chinese Academy of Sciences [KZZD-EW-04]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB03020300]; Innovation Frontier Project of Institute of Soil and Water Conservation of Chinese Academy of Sciences; State Key Laboratory of Soil Erosion, and Dryland Farming on the Loess Plateau [10501-192] ; National Natural Science Foundation of China [41672180]; Hundred-Talent Project of the Chinese Academy of Sciences [20110009]; key Research Program of Chinese Academy of Sciences [KZZD-EW-04]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB03020300]; Innovation Frontier Project of Institute of Soil and Water Conservation of Chinese Academy of Sciences; State Key Laboratory of Soil Erosion, and Dryland Farming on the Loess Plateau [10501-192]
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Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/7977
Collection水保所科研产出--SCI_2017--SCI
Corresponding AuthorHe, HM (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi Provinc, Peoples R China.
Affiliation1.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi Provinc, Peoples R China
2.MWR, Yangling 712100, Shaanxi Provinc, Peoples R China
3.Univ Chinese Acad Sci, Beijing 10049, Peoples R China
4.Mississippi State Univ, Dept Forestry, Starkville, MS 39759 USA
5.Northwest A&F Univ, Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi Provinc, Peoples R China
Recommended Citation
GB/T 7714
Cheng, N. N.,He, H. M.,Yang, S. Y.,et al. Impacts of topography on sediment discharge in Loess Plateau, China[J]. QUATERNARY INTERNATIONAL,2017,440:119-129.
APA Cheng, N. N.,He, H. M.,Yang, S. Y.,Lu, Y. J.,Jing, Z. W.,&He, HM .(2017).Impacts of topography on sediment discharge in Loess Plateau, China.QUATERNARY INTERNATIONAL,440,119-129.
MLA Cheng, N. N.,et al."Impacts of topography on sediment discharge in Loess Plateau, China".QUATERNARY INTERNATIONAL 440(2017):119-129.
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