[1]BAI Hua,MU Xing-min,WANG Shuang-yin.Impact of Soil and Water Conservation on River Flow of Tuwei River[J].Research of Soil and Water Conservation,2010,17(01):40-44.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
17
Number of periods:
2010 01
Page number:
40-44
Column:
Public date:
2010-02-20
- Title:
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Impact of Soil and Water Conservation on River Flow of Tuwei River
- Author(s):
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BAI Hua1, MU Xing-min1,2, WANG Shuang-yin1
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1. Northwest A & F University, Yangling, Shanxi, 712100, China;
2. Institute of Soil and Water Conservation, CAS & MWR, Yangling, Shanxi, 712100, China
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- Keywords:
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rainfall; run-off; soil and water erosion; soil and water consevation; similar rainfall; Tuwei river; the Loess Plateau
- CLC:
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S157.2;P333.1
- DOI:
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- Abstract:
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In view of the factors affecting run-off,it is effective to reflect the soil and water conservation’s contribution to the run-off by analysis and comparison of changes in the run-off before and after soil erosion control.Based on the data of rainfall runoff storm and flood,the characters of rainfall runoff storm and flood in the catchment have been comprehensively analyzed through the method of Mann-kendall etc.According to the turning point of rainfall-runoff cumulative curve,the changes in the volume of runoff have been restored caused by the dynamic changes in precipitation and the changes in the run-off elements has been calculated owing to the water and soil conservation.The standard of judging the similar rainfall has been worked out,by which the changes of the flood’s elements and progress has been analyzed among different periods.Analysis showed:the turning point of the annual average flow sequence is in 1977.After this turning point,multi-year average runoff depth and proportion of run-off during the flood season decreases.Proportion of run-off during the dry season increases.The degree of inter-annual dramatic changes decline,the flood volume and peak flow has reduced and flood process has been averaged.