| Title |
Analysis of Effects on Soil Erosion Reduction of Various Best Management Practices at Watershed Scale |
| Authors |
이동준 ( Dong Jun Lee ) ; 이지민 ( Ji Min Lee ) ; 금동혁 ( Dong Hyuk Kum ) ; 박윤식 ( Youn Shik Park ) ; 정영훈 ( Young Hun Jung ) ; 신용철 ( Young Chul Shin ) ; 정교철 ( Gyo Cheol Jeong ) ; 이병철 ( Byeong Cheol Lee ) ; 임경재 ( Kyoung Jae Lim ) |
| DOI |
https://doi.org/10.15681/KSWE.2014.30.6.638 |
| Keywords |
BMPs; Roll type vegetation channel; Soil erosion; SWAT; USLE P; Vegetation mat with infiltration roll |
| Abstract |
Soil erosion from agricultural fields leads to various environmental problems weakening the capabilities of flood control and ecosystem in water bodies. Regarding these problems, Ministry of Environment of South-Korea prepared various structural and non-structural best management practices (BMPs) to control soil erosion. However, a lot of efforts are required to monitor and develop BMPs. Thus, modeling techniques have been developed and utilized for these issues. This study estimated the effectiveness of BMPs which are a vegetation mat with infiltration roll and Roll type vegetation channel using Soil and Water Assessment Tool(SWAT) model through the adjustment of the conservation practice factors, P factors, for Universal Soil Loss Equation which were calculated by monitoring data collected at the segment plots. Each BMP was applied to the areas with slopes ranged from 7% to 13% in the Haeanmyeon watershed. As a result of simulation, the vegetation mat with infiltration roll and Roll type vegetation channel showed 55% and 59% efficiency of soil erosion reduction, respectively. Also, Vegetation mat with infiltration roll and Roll type vegetation channel showed each 11.2% and 11.8% efficiency in reduction of sediment discharge. These roll type vegetation channel showed greater efficiency of soil erosion reduction and sediment discharge. Based on these results, if roll type vegetation channel is widely used in agricultural fields, reduction of soil erosion and sediment discharge of greater efficiency would be expected. |