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Basin form characteristics, causes and implications of the ten kongduis in the upper reaches of the Yellow River
Yang, Hui1,2; Shi, Changxing1
2017-09-25
Source PublicationQUATERNARY INTERNATIONAL
ISSN1040-6182
Volume453Pages:15-23
Corresponding AuthorShi, Changxing(shicx@igsnrr.ac.cn)
AbstractThe ten kongduis (the transliteration of ephemeral flood gullies in Mongolian) are one of the main sediment sources of the upper reaches of the sediment-laden Yellow River in China. The basin form characteristics and their causal factors and environmental effects of the kongduis are important knowledge for understanding the geomorphic processes and for managing the kongduis. In this study, we extracted the drainage networks and watersheds of the kongduis from the DEM, calculated the geometric and structural indices of the watersheds and networks, investigated relations of the gully density with surface material composition, vegetation coverage and topography, and the relations of the sediment yield with gully density and other geometric indices of watersheds, and associated the gully density with the evolution stage of landforms of the basins. The results reveal that the ten kongduis are 5th - 6th order streams and their watersheds are long and narrow with a circularity ratio of 0.16-0.26, an elongation ratio of 0.29-0.43 and a power of drainage area of 0.89-4.52 in the power function between mainstream length and drainage area. Yet, the available data do not support the impacts of the geometric indices of watersheds on the sediment yield in the ten kongduis, and the insignificant relation between the specific sediment yield and drainage area denies the existence of scale effect in sediment yield in the kongduis. In contrast, the gully density is found to be closely and positively related with the sediment yield. The hypsometric integrals of the upstream reaches of the ten kongduis and the relation between gully density and hypsometric integral suggest that the kongduis are in the mature stage of landform evolution and the west five kongduis are in the early mature stage with a potential increase trend of gully density and a concomitant escalation of sediment yield in future. (C) 2017 Elsevier Ltd and INQUA. All rights reserved.
KeywordTen kongduis Watershed geometry River network Gully density Sediment yield
DOI10.1016/j.quaint.2017.04.009
WOS KeywordDIGITAL ELEVATION DATA ; DRAINAGE DENSITY ; SEDIMENT YIELD ; WATERSHEDS ; NETWORKS ; SCALE ; HYPSOMETRY ; EXTRACTION ; MOUNTAINS ; EVOLUTION
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41371036] ; National Natural Science Foundation of China[41671004]
Funding OrganizationNational Natural Science Foundation of China
WOS Research AreaPhysical Geography ; Geology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000409352900002
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/61652
Collection中国科学院地理科学与资源研究所
Corresponding AuthorShi, Changxing
Affiliation1.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Yang, Hui,Shi, Changxing. Basin form characteristics, causes and implications of the ten kongduis in the upper reaches of the Yellow River[J]. QUATERNARY INTERNATIONAL,2017,453:15-23.
APA Yang, Hui,&Shi, Changxing.(2017).Basin form characteristics, causes and implications of the ten kongduis in the upper reaches of the Yellow River.QUATERNARY INTERNATIONAL,453,15-23.
MLA Yang, Hui,et al."Basin form characteristics, causes and implications of the ten kongduis in the upper reaches of the Yellow River".QUATERNARY INTERNATIONAL 453(2017):15-23.
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