The purpose of this study is to apply a distributed hydrologic model to investigate the impact on surface hydrology of the Tamshui River Basin, the Choshui River Basin, and the Kaoping River Basin causing by the change of climate and human activities. The main focus is to study the variation of surface water availability and the possible impact of these changes on social and economic sectors. Three years of intensive work is proposed in this project. The first year (8/2005~7/2006) will develop an integrated surface-subsurface model and apply historical data to verify and validate this approach. The basic hydrological and basin data of Tamshui river basin will be collected and analyzed. The second year (8/2006~7/2007) will focus on the climate change impact study. The adaptation strategies will be proposed based on the simulation results. Choshui river basin will be added as the second study domain. The third year (8/2007~7/2008) will investigate the impact of human activities under climate change scenarios on surface hydrology of these two basins and propose corresponding strategies of adaptation. The landuse changes scenarios will be established based on (1) national landuse policy, (2) urbanization developments, and (3) farmland transformation. Kaoping river basin will be added as the third study domain. Through the study of integrated projects, a better understanding of hydrological cycles in Taiwan at current and future can be obtained. The research results can be applied as key references for relative government agencies and research institute on future study of flood mitigation, water resources management, national land planning. 研究期間：9608 ~ 9715
