[1]WU Yabing,FANG Haiyan,ZHANG Wei,et al.Contribution of Snowmelt Runoff to Sediment Yield in the Black Soil Region of Northeast China and Factor Analysis[J].Research of Soil and Water Conservation,2023,30(03):86-93.[doi:10.13869/j.cnki.rswc.2023.03.053]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 03
Page number:
86-93
Column:
Public date:
2023-04-10
- Title:
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Contribution of Snowmelt Runoff to Sediment Yield in the Black Soil Region of Northeast China and Factor Analysis
- Author(s):
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WU Yabing1,2, FANG Haiyan2,3, ZHANG Wei1, WANG Shuo2, ZHAI Yuyu2,3, ZHAO Ziyuan2,3
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(1.School of Geography, Liaoning Normal University, Dalian, Liaoning 116029, China; 2.Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographical 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 100101, China)
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- Keywords:
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snowmelt; specific sediment yield; catchment; spatial variation; influencing factors
- CLC:
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S157.1
- DOI:
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10.13869/j.cnki.rswc.2023.03.053
- Abstract:
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[Objective]The aim of this study is to explore the contribution of catchment sediment yield to annual total as well as its main influencing factors, and then to provide scientific support. [Methods] Based on precipitation data from 203 meteorological stations and runoff and sediment data from 15 hydrological stations in northeastern China, the rainfall and snowfall, topographic, climatic, and land use characteristics in the selected catchments were examined, and the annual sediment yield contributions to annual total derived from snowmelt runoff were quantified. The factors influencing catchment runoff and sediment yield during snowmelt period were further analyzed through correlation analysis and multiple regression methods. [Results] Spatially, more snowfall occurred in the southeast and less in the northwest. The annual snowfall amount accounted for 3.8%~24.7% of the annual precipitation. The snowmelt runoff depth accounted for 13.7%~32.5% of the annual totals. The contributions of sediment yield(SY)derived from snowmelt to annual total were 3.8%~23.47%, and the specific sediment yields(SSYs)derived from snowmelt runoff were 3.1%~35.9% of the annual total. Their distributions were disorderly in space. The contribution of snowmelt induced SY was significantly correlated with mean annual precipitation, the ratio of snowfall amount to annual precipitation, and the ratio of snowmelt runoff depth to annual runoff depth at the 0.05 significant level. The catchment SY and SSY contributions by the ratio of annual snowfall to annual precipitation were 25.41% and 30.22%, respectively. [Conclusion] Sediment yield derived from snowmelt runoff contributed a large part of catchment annual total, and was influenced by many factors. Field monitoring of snowmelt erosion and sediment yield in the black soil region ofnortheastern China should be strengthened in the future study.