[1]YANG Hui-long,WANG Shuang-yin,WANG Jian-ying.Identification of Influencing Factors on Monthly Runoff[J].Research of Soil and Water Conservation,2011,18(05):108-111.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
18
Number of periods:
2011 05
Page number:
108-111
Column:
Public date:
2011-10-20
- Title:
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Identification of Influencing Factors on Monthly Runoff
- Author(s):
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YANG Hui-long, WANG Shuang-yin, WANG Jian-ying
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College of Water Resources and Architectural Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China
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- Keywords:
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cause analysis; correlation analysis; runoff influencing factor; Shitouhe watershed
- CLC:
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P332.4
- DOI:
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- Abstract:
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Identification of influencing factors on runoff is a key to runoff forecasting, which could offer a scientific support for further study the evolution of runoff. This paper takes monthly runoff as an example and uses the data on monthly runoff and the average precipitation of the Shitouhe watershed from 1954 to 2007 to select the possible factors according to cause analysis, then uses the relevant probability, single correlation coefficient and Spearman coefficient to analyze correlativity, gets the main factors from the consolidated results of above analysis methods. The results show that runoff occurring in January and November is mainly affected by runoff of previous month, monthly runoff of March and December is mainly affected by the runoff occurring in advance of that two months. Runoff of February, April, July, August and October are affected by precipitation with previous monthly runoff. Runoff of May, June and September is mainly affected by the monthly precipitation.