Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 33087
Seasonal Water Quality Trends in the Feitsui Reservoir Watershed, Taiwan
Authors: Pei-Te Chiueh, Hsiao-Ting Wu, Shang-Lien Lo
Abstract:
Protecting is the sources of drinking water is the first barrier of contamination of drinking water. The Feitsui Reservoir watershed of Taiwan supplies domestic water for around 5 million people in the Taipei metropolitan area. Understanding the spatial patterns of water quality trends in this watershed is an important agenda for management authorities. This study examined 7 sites in the watershed for water quality parameters regulated in the standard for drinking water source. The non-parametric seasonal Mann-Kendall-s test was used to determine significant trends for each parameter. Significant trends of increasing pH occurred at the sampling station in the uppermost stream watershed, and in total phosphorus at 4 sampling stations in the middle and downstream watershed. Additionally, the multi-scale land cover assessment and average land slope were used to explore the influence on the water quality in the watershed. Regression models for predicting water quality were also developed.Keywords: Seasonal Mann-Kendall's test, Flow-adjusted concentrations, Water quality trends, Land-use
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1071508
Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1600References:
[1] R. Plummer, J. Velaniškis, D. de Grosbois, R. D. Kreutzwiser, and R. de Loë, "The development of new environmental policies and processes in response to a crisis: the case of the multiple barrier approach for safe drinking water," Environ. Sci. Policy, vol. 13, pp. 535-548, 2010.
[2] L. A. Sprague and D. L. Lorenz, "Regional Nutrient Trends in Streams and Rivers of the United States, 1993−2003," Environ. Sci. Technol., vol. 43, pp. 3430-3435, 2009.
[3] M. Boeder and H. Chang, "Multi-scale analysis of oxygen demand trends in an urbanizing Oregon watershed, USA," J. Environ. Manage., vol. 87, pp. 567-581, 2008.
[4] C. P. Tran, R. W. Bode, A. J. Smith, and G. S. Kleppel, "Land-use proximity as a basis for assessing stream water quality in New York State (USA)," Ecolo. Indic., vol. 10, pp. 727-733, 2010.
[5] Y. S. Yu, S. Zou, and D. Whittemore, "Non-parametric trend analysis of water quality data of rivers in Kansas," J. Hydrol., vol. 150, pp. 61-80, 1993.
[6] H. D. Passell, C. N. Dahm, and E. J. Bedrick, "Nutrient and organic carbon trends and patterns in the upper Rio Grande, 1975-1999" Sci. Total Environ., vol. 345, pp. 239-260, 2005.
[7] H. Chang, "Spatial analysis of water quality trends in the Han River basin, South Korea" Water Res., vol. 42, pp. 3285-3304, 2008.
[8] R. M. Hirsch and J. R. Slack, "A Nonparametric Trend Test for Seasonal Data with Serial Dependence," Water Resour. Res., vol. 20, pp. 727-732, 1984.
[9] C. D. Evans, J. M. Cullen, C. Alewell, J. Kopácek, A. Marchetto, F. Moldan, A. Prechtel, M. Rogora, J. VeselÛ, and R. Wright, "Recovery from acidification in European surface waters," Hydrol. Earth Syst. Sc., vol. 5, pp. 283-297, 2001.
[10] R. M. Hirsch, R. B. Alexander, and R. A. Smith, "Selection of methods for the detection and estimation of trends in water quality," Water Resour. Res., vol. 27, pp. 803-813, 1991.