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A Variety of Meteorological and Geographical Characteristics Effects on Watershed Responses to a Storm Event
Abstract:The Chichiawan stream in the Wulin catchment in Taiwan is the natural habitat of Formosan landlocked salmon. Human and agriculture activities gradually worsen water quality and impact the fish habitat negatively. To protect and manage Formosan landlocked salmon habitat, it is important to understand a variety land-uses affect on the watershed responses to storms. This study discusses watershed responses to the dry-day before a storm event and a variety of land-uses in the Wulin catchment. Under the land-use planning in the Wulin catchment, the peak flows during typhoon events do not have noticeable difference. However, the nutrient exports can be highly reduced under the strategies of restraining agriculture activities. Due to the higher affinity of P for soil than that of N, the exports of TN from overall Wuling catchment were much greater than Ortho-P. Agriculture mainly centralized in subbasin A, which is the important source of nutrients in nonpoint source discharge. The subbasin A supplied about 26% of the TN and 32% of the Ortho-P discharge in 2004, despite the fact it only covers 19% area of the Wuling catchment. The subbasin analysis displayed that the agricultural subbasin A exports higher nutrients per unit area than other forest subbasins. Additionally, the agricultural subbasin A contributed a higher percentage to total Ortho-P exports compares to TN. The results of subbasin analysis might imply the transport of Ortho-P was similar to the particulate matter which was mainly influenced by the runoff and affected by the desorption from soil particles while the TN (dominated as nitrate-N) was mainly influenced by base-flow.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1072305Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1014
 Y. T. Dai, Population Ecology of Formosan Landlocked Ssalmon Oncorhynchus masou formosanus. The Graduated Thesis of Graduate Institute of Zoology, National Taiwan University, 1992. (In Chinese)
 J. M. Wang, The Survival Treasure- A Special Issue of Formosan Landlocked Salmon. Construction and Planning Agency, Ministry of Interior, SHEI-PA National Park Management Office, 1994. (In Chinese)
 M. J. Bradford, and J. R. Irvine, "Land use, fishing, climate change, and the decline of Thompson River, British Columbia, coho salmon," Canadian Journal of Fisheries and Aquatic Sciences, vol. 57, pp. 13-16, 2000.
 C. P. Tung, and T. Y. Li, "Climate change impact assessment of the ChiChiaWan Creek streamflow," Chinese Journal of Agricultural Engineering, vol. 47, pp. 65-74, 2001. (In Chinese)
 C. C. Wu, and Y. H. Kuo, "Typhoons affecting Taiwan: current understanding and future challenges," Bulletin of the American Meteorological Society, vol. 80, pp.67-80, 1999.
 J. M. Faures, D. C. Goodrich, D. A. Woolhiser, and S. Soroosh, "Impact of small-scale spatial variability on runoff modeling," J. Hydrol., vol. 173, pp. 309-326, 1995.
 L. L. Vicente, "On the effect of uncertainty in spatial distribution of rainfall on catchment modeling," Catena, vol. 28, pp. 107-119, 1996.
 I. Chaubey, C. T. Haan, J. M. Salisbury, and S. Grunwald, "Quantifying model output uncertainty due to spatial variability of rainfall," Journal of the American Water Resources Association, vol. 35, pp. 1113-1123, 1999.
 A. I. J. M. V. Dijk, L. A. Bruijnzeel, and C. J. Rosewell, "Rainfall intensity-kinetic energy relationships: a critical literature appraisal," J. Hydrol., vol. 261, pp. 1-23, 2002.
 C. L. Chang, S. L. Lo, and M. Y. Chen, "Uncertainty in watershed response prediction induced by spatial variability of precipitation," Environ Monit Assess., vol. 127, pp. 147-153, 2007.
 T. S. Tisdale, R. J. Kaighn, and S. L. Yu, The Virginia Storm (VAST) Model for Stormwater Management ÔöÇ User - s Guide version 6.0. University of Virginia, Charlottesville, V.A., USA, 1996.
 S. L. Yu, R. L. Stanford, and Y. Y. Zhai, Virginia Stormwater Model for Windows ÔöÇ User - s Manual version 1.0. University of Virginia, Charlottesville, V.A., USA, 2003.
 R. J. Kaighn, Improvement to Virginia Storm (VAST) Hydrologic Watershed Model including Detention Pond Pollution Routing. Department of Civil Engineering, University of Virginia, Charlottesville, V.A., USA, 1993.
 M. Wanielista, R. Kersten, and R. Eaglin, Hydrology-Water Quantity and Quality Control. John Wiley & Sons, Inc., 1997, pp. 91-96.
 P. B. Bedient, and W. C. Huber, Hydrology and Floodplain Analysis. Prentice-Hall, Inc., Upper Saddle River, N.J., USA, 2002.
 C. L. Chang, W. H. Kuan, P. S. Lui, and C. Y. Hu, "Relationship between landscape characteristics and surface water quality," Environ Monit Assess., vol. 147, pp. 57-64, 2008.
 C. M. Kao, J. Y. Wang, H. Y. Lee, and C. K. Wen, "Application of a constructed wetland for non-point source pollution control," Water Science and Technology, vol. 44, pp. 585-590, 2001.
 K. W. Cho, K. G. Song, J. W. Cho, T. G. Kim, and K. H. Ahn, "Removal of nitrogen by a layered soil infiltration system during intermittent storm events," Chemosphere, vol. 76, pp. 690-696, 2009.
 T. Navratil, J. Rohovec, A. Amirbahman, S. A. Norton, and I. J. Fernandez, "Amorphous aluminum hydroxide control on sulfate and phosphate in sediment-solution systems," Water and Soil Pollution, vol. 201, pp. 87-98, 2009.
 M. I. Stutter, S. J. Langana, and R. J. Cooper, "Spatial contributions of diffuse inputs and within-channel processes to the form of stream water phosphorus over storm events," J. Hydrol., vol. 350, pp. 203-214, 2008.
 M. I. Stutter, S. J. Langana, and R. J. Cooper, "Spatial and temporal dynamics of stream water particulate and dissolved N, P, and C forms along a catchment transect, NE Scotland," J. Hydrol., vol. 350, pp. 187-202, 2008.
 T. Kato, H. Kuroda, and H. Nakasone, "Runoff characteristics of nutrients from an agricultural watershed with intensive livestock production," J. Hydrol., vol. 368, pp. 79-87, 2009.
 J. H. Lee, and K. W. Bang, "Characterization of urban stormwater runoff," Water Res., vol. 34, pp. 1772-1780, 2000.