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首页> 外文会议>International Commission on Irrigation and Drainage;International congress on irrigation and drainage >SIMULATION OF SEDIMENT REDUCTION EFFECTS OF VEGETATED FILTER STRIPS BASED ON KOREAN UPLANDS CHARACTERISTICS USING VFSMOD-W
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SIMULATION OF SEDIMENT REDUCTION EFFECTS OF VEGETATED FILTER STRIPS BASED ON KOREAN UPLANDS CHARACTERISTICS USING VFSMOD-W

机译：基于VFSMOD-W的基于韩国乌兰特特征的植被滤带减沙效果模拟

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Since Korean upland fi elds are sloping, and higher amount of fertilizer and pesticide are appliedcompared to paddy fi elds, uplands are found to be one of the major NPS pollution sources.The dominant soil type of Korean uplands is loamy and the agriculture is practiced in 7 -15%of slope areas. The hydrologic soil group is “B”. The common sizes of uplands were between0.1ha and 0.2ha, and 86.2% of them accounted for less than 1.0ha. In this study, the generalcharacteristics of the Korean uplands were investigated. Based on the investigation fi ndings,the vegetated fi lter strips (VFS) were considered as a measure of reducing NPS pollutionsfrom uplands, The effects of VFS systems on reducing sediment loads were assessed by usingVFSMOD-W. The simulation study was conducted for 0.1ha, 0.5ha, and 1.0ha of uplands with7% and 15% of slopes with different type of shapes designed for the VFS system evaluations.Simulated daily rainfalls of 20mm, 40mm and 100mm were considered in the model. Thecalculated sediment loads ranged 29~101kg/ha, 2,592~9,160kg/ha, 26,340~123,000kg/hafor the 7% slope, and 69~360kg/ha, 6,603~32,840kg/ha, 60,110~429,700kg/ha for the 15%slope of uplands from the 20mm, 40mm and 100mm rainfalls, respectively. After applying VFSsystems, no sediment generation was obtained from 20mm rainfall for both 7% and 15% slopesof uplands, while the simulated sediment loads ranged 0~4,169kg and 9,282~80,870kg/ha forthe 7% slope and 28~25,140kg/ha and 34,390~298,440kg/ha for the 15% slope from 40mmand 100mm rainfalls respectively.
机译：由于韩国高地的土地倾斜，因此施用了更多的肥料和杀虫剂 与稻田相比，高地被认为是NPS的主要污染源之一。 韩国高地的主要土壤类型是壤土，农业以7 -15％的比例进行耕种。 斜坡区域。水文土壤群为“ B”。高地的常见大小在 0.1公顷和0.2公顷，其中86.2％的土地少于1.0公顷。在这项研究中，一般 对韩国高地的特征进行了调查。根据调查结果， 植被过滤带（VFS）被认为是减少NPS污染的一种措施 来自高地，VFS系统对减少泥沙负荷的影响通过使用 VFSMOD-W。进行了0.1ha，0.5ha和1.0ha高地的模拟研究， 为VFS系统评估而设计的具有不同形状类型的坡度的7％和15％。 该模型考虑了20mm，40mm和100mm的模拟日降雨量。这 计算的泥沙负荷范围为29〜101kg / ha，2,592〜9,160kg / ha，26,340〜123,000kg / ha 坡度为7％时为69〜360kg / ha，6603〜32,840kg / ha，15％时为60,110〜429,700kg / ha 分别从20mm，40mm和100mm降雨产生的高地坡度。应用VFS之后 系统，在7％和15％的坡度下，20mm降雨都不会产生沉积物 的高地，而模拟的泥沙负荷范围为0〜4,169kg / ha和9,282〜80,870kg / ha 从40mm起15％的坡度为7％和28〜25,140kg / ha和34,390〜298,440kg / ha 和100mm的降雨量。

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