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KMID : 1024520160250071007
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Journal of the Environmental Sciences
2016 Volume.25 No. 7 p.1007 ~ p.1016
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Characteristics of Storm Runoff and Analysis of Its Correlation with Forest Properties
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Chung Woo-jin
Chang Soon-Woong
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Abstract
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Environmental policy implementation has been strengthened to protect the source waters in Korea and to improve their
water quality. Increasing of non-point source caused water quality problem continuously. Research on runoff from forests,
which occupy over 65% of the land in korea, is insufficient, and studies on the characteristics and influences of storm runoff are necessary. In this study, we chose to compare the effects of land use in the form of two types of forest distribution and then gathered data on storm characteristics and runoff properties during rainfall events in these areas. Furthermore, the significance and influences of the discharges were analyzed through correlation analysis, and multilateral runoff characteristics were examined by deducing a formula through CODMn and TOC regression analysis. At two forest points, for which the basin areas differed from each other, flow changed according to storm quantity and intensity. The peak discharge at point A, where the basin area was big, was high, whereas water-quality fundamental items (BOD, CODMn, and SS) and TOC density were high at point B where the slope and storm intensity were high. Effects of dissolved organic matter were determined through correlation analysis, and the regression formulas for CODMn and TOC were deduced by regression analysis. It is expected that
the data from this study could be useful as basic information in establishing forest management measures.
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KEYWORD
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Forest runoff, Hydrological irrigation, Runoff characteristics, Event mean concentration, Correlation analysis
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