[1]HOU Suzhen,GUO Yan,LI Ting.Analysis on the Relationship of the Sediment Yield in Tributary Basin[J].Research of Soil and Water Conservation,2018,25(01):66-71.
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Analysis on the Relationship of the Sediment Yield in Tributary Basin
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 01
Page number:
66-71
Column:
Public date:
2018-02-28
- Title:
- Analysis on the Relationship of the Sediment Yield in Tributary Basin
- Keywords:
- tributary; rainfall and sediment yield relationship; reduction of specific sediment yield; correlation analysis
- CLC:
- S157
- DOI:
- -
- Abstract:
- The flood and sediment of ten tributaries are extremely unfavorable to the safety of the lower reaches, and cause serious lifting silt in the main Yellow River. The study on the relationship of sediment yield and changes is very important for watershed management planning and reasonable evaluation of runoff and sediment trend. Based on the measured hydrological and sediment data, combing with the development of comprehensive treatment of ten tributaries basin, taking the relative stable period of before and after treatment as comparison years, the cumulative rainfall and annual sediment discharge when daily rainfall is more than 10 mm and 25 mm as parameters, we set up the relationship between rainfall and sediment yield of different periods of Maobulang, Xiliugou and Hantaichuan. The result shows that there is great influence of underlying surface variation on sediment yield. The analysis shows that the recent sediment discharge is reduced by about 90% than the base period in the case of similar rainfall, and the reductions of specific sediment yield of three tributaries are between 93% and 98% under the annual average effective rainfall condition. The results show that the large-scale treatment, vegetation restoration and check dam construction play important role in reducing sediment in the basin. The research results can provide an important basis for evaluating the effect of watershed comprehensive management measures.
- References:
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1900-01-01