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http://dx.doi.org/10.5389/KSAE.2022.64.4.001

Efficiency Evaluation of Vegetative Filter Strip for Non-point Source Pollutant at Dense Upland Areas - Focused on Non-point Source Management Area Mandae, Gaa, and Jaun Basins -  

Jeong, Yeonji (Department of Regional Infrastructure Engineering, Kangwon National University)
Lee, Dongjun (Earth System Science, Auburn University)
Kang, Hyunwoo (Forest Engineering, Resource & Management, Oregon State University)
Jang, Won Seok (Division of Public Infrastructure Assessment, Environmental Assessment Group, Korea Environment Institute)
Hong, Jiyoung (Earth and Environment, Boston University)
Lim, Kyoung Jae (Earth and Environment, Boston University)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.64, no.4, 2022 , pp. 1-10 More about this Journal
Abstract
A vegetative filter strip (VFS) is one of the best management practices (BMPs) to reduce pollutant loads. This study aims to assess the effectiveness of VFS in dense upland field areas. The study areas are agricultural fields in the Maedae (MD), Gaa (GA), and Jaun (JU) watersheds, where severe sediment yields have occurred and the Korean government has designated them as non-point management regions. The agricultural fields were divided into three or four clusters for each watershed based on their slope, slope length, and area (e.g., MD1, MD2). To assess the sediment trapping (STE) and pesticide reduction efficiency (PRE) of VFS, the Vegetative Filter Strip Modeling System (VFSMOD) was applied with three different scenarios (SC) (SC1: VFS with rye vegetation; SC2: VFS with rye vegetation and a gentle slope in VFS range; and SC3: VFS with grass mixture). For SC1, there were relatively short slope lengths and small areas in the MD1 and GA3 clusters, and they showed higher pollutant reduction (STE>50%, PRE>25%). For SC2 and SC3, all clusters in GA and some clusters (MD1 and MD3) in MD show higher pollutant reduction (>25%), while the uplands in JU still show a lower pollutant (<25%). With correlation analysis between geographic characteristics and VFS effectiveness slope and slope length showed relative higher correlations with the pollutant efficiency than a area. The results of this study implied that slope and slope length should be considered to find suitable upland conditions for VFS installations.
Keywords
BMPs; Non-point source pollutant; VFS; VFSMOD;
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Times Cited By KSCI : 7  (Citation Analysis)
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