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[1]XU Jingjing,DU Pengfei,QU Liqin,et al.Sediment Sources in Watersheds with Various Areas in Transitional Region from Plateau to Plain[J].Research of Soil and Water Conservation,2021,28(06):39-45.

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Sediment Sources in Watersheds with Various Areas in Transitional Region from Plateau to Plain

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 28 Number of periods: 2021 06 Page number: 39-45 Column: Public date: 2021-10-10

Title:: Sediment Sources in Watersheds with Various Areas in Transitional Region from Plateau to Plain

Author(s):: XU Jingjing¹，DU Pengfei¹，QU Liqin¹，ZHAO Ying¹，HUANG Donghao²，ZHOU Ruipeng¹; (1.International Research and Training Center on Erosion and Sedimentation，China Institute of Water Resources and Hydropower Research，Beijing 100048，China; 2.College of Water Conservancy，Shenyang Agricultural University，Shenyang 110866，China)

Keywords:: sediment sources; ratio of sediment area; fingerprinting; transitional area from plateau to plain

CLC:: S157

DOI:: -

Abstract:: The composite fingerprint technique was introduced to identify the characteristics of sediment sources contribution in typical watersheds named Xiaobazi Town and Xiaobazi Village，which experienced serious water erosion is located in the transitional area from plateau to plain in northern China. In order to make the optimized composite fingerprints clear，30 chemical properties and grain size composition were measured and statistically analyzed. Then the Walling-Collins model was used to calculate the relative contribution rate of sediment sources. The results indicated that farmland was the primary sediment source in Xiaobazi Town watershed，reaching 71.6%，forest and grass land contributed 15.9% and gully contributed 12.5%. Returning farmland and gully were the important two sediment sources in Xiaobazi Village watershed，reaching 44.4% and 34.2%，respectively，while grassland contributed 21.4%. The ratio of sediment area was significantly different in various sediment source regions，in Xiaobazi Town watershed，the ratio of sediment area of forest and grass land was the lowest with value of 0.18，the ratio of sediment area of farmland was the highest with value of 11.07，and the ratio of sediment area of gully was 5.87，which is between the ratio of sediment areas of farmland and forest and grass land. In Xiaobazi Village watershed，the ratio of sediment area in crased in the order: 0.43 in grassland< 1.07 in returning farmland < 3.96 in gully. More attention for soil erosion control should be focused on farmland and gully in Xiaobazi Town watershed in the future.

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Last Update: 2021-10-10