Impacts of topography on sediment discharge in Loess Plateau, China

doi:10.1016/j.quaint.2016.12.005

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.
文章类型	Article
	2017
发表期刊	QUATERNARY INTERNATIONAL
ISSN	1040-6182
通讯作者邮箱	hongming.he@yahoo.com
卷号	440 页码:119-129
摘要	Geomorphologic 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.
关键词	Principal Components Analysis Linear Regression Soil Erosion Sediment Discharge Topographic Characteristics Loess Plateau
学科领域	Physical Geography ; Geology
DOI	10.1016/j.quaint.2016.12.005
URL	查看原文
收录类别	SCI
出版地	OXFORD
语种	英语
WOS记录号	WOS:000404311300013
出版者	PERGAMON-ELSEVIER SCIENCE LTD
项目资助者	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] ; 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]
引用统计
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/7977
专题	水保所科研产出--SCI_2017--SCI
通讯作者	He, HM (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi Provinc, Peoples R China.
作者单位	1.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
推荐引用方式 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.