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[1]LI Qiuyan,FANG Haiyan,LI Guoqiang.Research on Sediment Sources of the Shouchangjiang River[J].Research of Soil and Water Conservation,2022,29(04):115-120.

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Research on Sediment Sources of the Shouchangjiang River

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 04 Page number: 115-120 Column: Public date: 2022-06-20

Title:: Research on Sediment Sources of the Shouchangjiang River

Author(s):: LI Qiuyan¹, FANG Haiyan^2,3, LI Guoqiang⁴; (1.China Science Publishing & Media Ltd., Beijing 100717, China; 2.Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; 3.College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China; 4.Hangzhou Hydrology and Water Resources Monitoring Center, Hangzhou 310016, China)

Keywords:: Shoucang River Basin; fingerprinting trace; sediment source; human activity

CLC:: S157; P333.4

DOI:: -

Abstract:: Human activity is the main factor inducing sediment siltation in rivers. In order to explore the impacts of road construction and river bed destruction on sediment yield in rivers, the Shoucang River in Zhejiang Province was selected in this study, and sediment contributed from different potential source areas were quantified. Two groups of fingerprinting factors were derived from the statistical combinations of Kruskal-Wallis H-test(KW-H)and discriminant function analysis(DFA), and principal component analysis(PCA)and DFA, both of which could well discriminate sediment source when they were used with a composite fingerprinting tracer model. However, the four fingerprints from PCA and DFA were better to discriminate the five potential sediment source areas. At the outlet of the river, the sediment from river beds was the most, occupying 34.7% of the total, followed by 28.1% sediment from construction lands, 24.1% sediment from forest lands, and 12.7 sediments from paddy fields. The sediment contribution from dry lands was the least, occupying only 0.3% of the total. Precipitation, land use, instream sand mining, bridge building, and road construction activities could explain the different contributions from the five potential sand source areas. Therefore, in the Shouchang River Basin where precipitation is high and vegetation coverage is dense, sediment in rivers mainly came from the destructed land surface by human production and construction activities.

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Last Update: 2022-06-20