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Understanding land use and cover change impacts on run-off and sediment load at flood events on the Loess Plateau, China
Xiaoping Zhang1,2; Pengfei Lin1,2; Hao Chen1,2; Rui Yan1,2; Jianjun Zhang1,2; Yipeng Yu1,2; Erjia Liu1,2; Yahui Yang1,2; Wenhui Zhao1,2; Du Lv1,2; Siyue Lei1,2; Baoyuan Liu1,2; Xihua Yang3; Zhiguang Li4; Zhang, XP (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China.; Zhang, XP (reprint author), Northwest Agr & Forestry Univ, Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China.
SubtypeArticle; Proceedings Paper
2018
Source PublicationHYDROLOGICAL PROCESSES
ISSN0885-6087
description.correspondentemailzhangxp@ms.iswc.ac.cn
Volume32Issue:4Pages:576-589
AbstractThe Loess Plateau has been experiencing large-scale land use and cover changes (LUCCs) over the past 50 years. It is well known about the significant decreasing trend of annual streamflow and sediment load in the catchments in this area. However, how surface run-off and sediment load behaved in response to LUCC at flood events remained a research question. We investigated 371 flood events from 1963 to 2011 in a typical medium-sized catchment within the Plateau in order to understand how LUCC affected the surface run-off generation and sediment load and their behaviours based on the analysis of return periods. The results showed that the mean annual surface run-off and sediment load from flood events accounted for 49.6% and 91.8% of their mean annual totals. The reduction of surface run-off and associated sediment yield in floods explained about 85.0% and 89.2% of declines in the total annual streamflow and sediment load, respectively. The occurrences of flood events and peak sediment concentrations greater than 500 kg/m(3) showed a significantly downward trend, yet the counterclockwise loop events still dominated the flood event processes in the catchment. The results suggest that LUCC over the past 50 years resulted in significant changes in the water balance components and associated soil erosion and sediment transportation in the catchment. This was achieved mainly by reducing surface run-off and sediment yield during floods with return period of less than 5 years. Runoff-sediment load behaviour during the extreme events with greater than 10-year return periods has not changed. Outcomes from this study are useful in understanding the eco-hydrological processes and assisting the sustainable catchment management and land use planning on the Loess Plateau, and the methodologies are general and applicable to similar areas worldwide.
KeywordFlood Run-off Loess Plateau Lucc Run-off-sediment Behaviour Sediment Load
Subject AreaWater Resources
DOI10.1002/hyp.11444
Indexed BySCI
Publication Place111 RIVER ST, HOBOKEN 07030-5774, NJ USA
Language英语
WOS IDWOS:000425515500011
PublisherWILEY
Funding OrganizationNational Natural Science Foundation of China [41230852, 41440012, 41101265] ; National Natural Science Foundation of China [41230852, 41440012, 41101265] ; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau [A314021402-1703, A314021403-C2] ; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau [A314021402-1703, A314021403-C2]
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8290
Collection水保所科研产出--SCI_2018--SCI
Corresponding AuthorZhang, XP (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China.; Zhang, XP (reprint author), Northwest Agr & Forestry Univ, Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China.
Affiliation1.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
2.Northwest Agr & Forestry Univ, Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China
3.New South Wales Off Environm & Heritage, POB 644, Parramatta, NSW 2124, Australia
4.Minist Water Resources, Monitoring Ctr Soil & Water Conservat, Beijing 100057, Peoples R China
Recommended Citation
GB/T 7714
Xiaoping Zhang,Pengfei Lin,Hao Chen,et al. Understanding land use and cover change impacts on run-off and sediment load at flood events on the Loess Plateau, China[J]. HYDROLOGICAL PROCESSES,2018,32(4):576-589.
APA Xiaoping Zhang.,Pengfei Lin.,Hao Chen.,Rui Yan.,Jianjun Zhang.,...&Zhang, XP .(2018).Understanding land use and cover change impacts on run-off and sediment load at flood events on the Loess Plateau, China.HYDROLOGICAL PROCESSES,32(4),576-589.
MLA Xiaoping Zhang,et al."Understanding land use and cover change impacts on run-off and sediment load at flood events on the Loess Plateau, China".HYDROLOGICAL PROCESSES 32.4(2018):576-589.
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