HR: 1340h
AN: H23F-1683    [Abstracts]
TI: Climate Change on Sediment Yeild of the ChiChiaWan Creek Watershed
AU: * Chen, W
EM: r95622044@ntu.edu.tw
AF: Wei-Ju Chen, Room 931, 9F., No.30, Sec. 3, Sinhai Rd., Da-an District, Taipei City 106, Taiwan (R.O.C.), Taipei, 106,
AU: Lee, T
EM: r90622005@ntu.edu.tw
AF: Wei-Ju Chen, Room 931, 9F., No.30, Sec. 3, Sinhai Rd., Da-an District, Taipei City 106, Taiwan (R.O.C.), Taipei, 106,
AU: Tung, C
EM: cptung@ntu.edu.tw
AF: Wei-Ju Chen, Room 931, 9F., No.30, Sec. 3, Sinhai Rd., Da-an District, Taipei City 106, Taiwan (R.O.C.), Taipei, 106,
AB: Soil erosion and transport capacity determines sediment yield, which may be influenced by climate change. Because the climate change impacts on factors of soil erosion have not been well established for the selected study area yet, it may not be realistic to use soil erosion model, such as USLE, and a transport model to simulate sediment yield. Instead, a rating curve is established to describe the relationship between streamflow and sediment yield and applied to project sediment yield under different climate conditions. Future climate derives from several GCMs. Then, the GWLF model is applied to simulate streamflows under different climate conditions. Those simulated flows are further applied to project the climate change impacts on sediment yield based on rating curves. The uncertainty of using a rating curve is discussed in this study. The ChiChiaWan Creek watershed is an important habitat for Formosa Salmon and is chosen as a case study. Furthermore, the impacts on habitat due to the changes of sediment yield are also assessed.
DE: 1807 Climate impacts
DE: 1816 Estimation and forecasting
DE: 1833 Hydroclimatology
DE: 1834 Human impacts
DE: 1873 Uncertainty assessment (3275)
SC: Hydrology [H]
MN: 2007 Fall Meeting