Mudstone is one of the problem soils regarding soil and water conservation in Taiwan. The components of soil texture in mudstone area are mainly silt and/or clay which result in poor infiltration and soil erosion occurs frequently at the bare slopeland in the area. Vegetated buffer zones need to be established as a Best Management Practice(BMP) for water quality improvement in agricultural areas. This study is to find out the optimal width and placement of vegetated buffer strips by applying the linkage of GIS technology with AGNPS model in A-Kung-Ten reservoir watershed which locates at
mudstone areas
