Using GIS to Analyze Non-point Source Critical Area in Feitsui Reservoir Watershed

• Main Authors: Jiun-Ming Chen, 陳俊銘
• Other Authors: 張尊國
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/81389774457072871148

碩士 === 國立臺灣大學 === 生物環境系統工程學研究所 === 94 === The object of this research is using the potential index, a simplifical USLE model, to analysis and find out the critical area of non-point pollution source in the Feitsui reservoir watershed. The potential index, including the soil factor (K), the landuse factor (U), the slope factor (S) and the watercourse factor (W) four factors which can be used as the indicator of pollution potential and with the aid of GIS the critical locations can be identified. The result shows that there are 3.09% area of the Feitsui reservoir watershed which classified as high-risk area. The high-risk area distributed in the middle of Bei-Shi river where landuse type are more complicated. The PI model has the advantage of screening out the critical area of non-point source pollution rapidly.