Pollutant Runoff Reduction Efficiency of Surface Cover, Vegetative Filter Strip and Vegetated Ridge for Korean Upland Fields: A Review
2018
Park, S.I., Chonnam National University, Gwangju, Republic of Korea | Park, H.J., Chonnam National University, Gwangju, Republic of Korea | Yang, H.I., Chonnam National University, Gwangju, Republic of Korea | Kim, H.Y., Chonnam National University, Gwangju, Republic of Korea | Yoon, K.S., Chonnam National University, Gwangju, Republic of Korea | Choi, W.J., Chonnam National University, Gwangju, Republic of Korea
BACKGROUND: In this review paper, the effects of surface cover (SCV), vegetative filter strip (VFS), and vegetated ridge (VRD) on the pollutant runoff from steep-sloping uplands were analyzed to compare the pollutant reduction efficiency in runoff (PRErunoff) of the practices and to investigate how slope and rainfall parameters affect the PRErunoff. METHODS AND RESULTS: The PRErunoff of SCV, VFS, and VRD for pollutants including suspended solids and biological oxygen demand was compared by analysis of variance. The effect of slope and rainfall parameters on the PRErunoff was explored by either mean comparison or regression analysis. It was found that the PRErunoff differs with the practices due to different pollutant reduction mechanisms of the practices. Though the PRErunoff was likely to be affected by site condition such as slope and rainfall (amount and intensity), more comprehensive understanding was not possible due to the limited data set. CONCLUSION: The PRErunoff of SCV, VFS, and VRD differed due to the distinctive mechanisms of pollutant removal of the practices. It is necessary to accumulate experimental data across a variety of gradient of slope and rainfall for comprehensive understanding of the effects of the practices on pollutant runoff from steep-sloping uplands.
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