The Influence of Rainfall Data Resolution between Landslide Distribution and Water Quality in a Watershed Under Climate Change

• Main Authors: Tian-You Wu, 吳天佑
• Other Authors: Chia-Ling Chang
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/69625152651309340323

碩士 === 逢甲大學 === 水利工程與資源保育學系 === 102 === Realizing the impact of climate change on water flow and water quality takes an important role in watershed management. Therefore, the main purpose of this study is to determine the influence caused by the climate change in water flow and water quality, using BASINS/HSPF model which was developed by U.S. Environmental Protection Agency (USEPA). First, we use six situations of landslide land to determine the impact on water flow and water quality in the watershed in using different types of land and different degrees of rain. Second, the six situations are set by considering or no considering, the slope classification, and three different diffusion positions: the whole diffusion, the upstream diffusion, and the downstream diffusion. The results show the correlation coefficient of hydrological calibration is 0.86 and the verification is 0.70. Furthermore, the water quality calibration can predict total phosphorus and suspended solids as well, even without sufficient observation. The results can be known when the annual flow and annual rainfall is smaller impact by climate change. According to estimate the amount of non-point source pollution of Export Coefficient Method and HSPF model, Whether the location of the new landslide where are all impact on the catchment areas not be ignored, so the slope of the catchment area conservation is even more important.