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The Effect of Antecedent Moisture Conditions on the Contributions of Runoff Components to Stormflow in the Coniferous Forest Catchment  

Choi, Hyung-Tae (Division of Forest Restoration, Department of Forest Conservation, Korea Forest Research Institute)
Kim, Kyong-Ha (Division of Research Planning & Coordination, Korea Forest Research Institute)
Lee, Choong-Hwa (Division of Forest Restoration, Department of Forest Conservation, Korea Forest Research Institute)
Publication Information
Journal of Korean Society of Forest Science / v.99, no.5, 2010 , pp. 755-761 More about this Journal
Abstract
This study analyzed water quality data from a coniferous forest catchment in order to quantify the contributions of runoff components to stormflow, and to understand the effects of antecedent moisture conditions within catchment on the contributions of runoff components. Hydrograph separation by the twocomponent mixing model analysis was used to partition stormflow discharge into pre-event and event components for total 10 events in 2005 and 2008. To simplify the analysis, this study used single geochemical tracer with Na+. The result shows that the average contributions of event water and pre-event water were 34.8% and 65.2% of total stormflow of all 10 events, respectively. The event water contributions for each event varied from 18.8% to 47.9%. As the results of correlation analysis between event water contributions versus some storm event characteristics, 10 day antecedent rainfall and 1 day antecedent streamflow are significantly correlated with event water contributions. These results can provide insight which will contribute to understand the importance of antecedent moisture conditions in the generation of event water, and be used basic information to stormflow generation process in forest catchment.
Keywords
hydrograph separation; geochemical tracer; coniferous forest catchment; antecedent moisture condition;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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