The study of water quality of three major reservoirs of Taiwan by using principal component analysis
碩士 === 國立臺灣海洋大學 === 海洋環境資訊系 === 103 === This study focuses on eutrophication level and quality in three major reservoirs of Taiwan (Northern, Central and Southern areas) to study the major controlling factors. The water monitorting data (2005-2014) include water temperature, pH, conductivity, dissol...
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碩士 === 國立臺灣海洋大學 === 海洋環境資訊系 === 103 === This study focuses on eutrophication level and quality in three major reservoirs of Taiwan (Northern, Central and Southern areas) to study the major controlling factors. The water monitorting data (2005-2014) include water temperature, pH, conductivity, dissolved oxygen, chlorophyll a, total phosphorus, orthophosphate, turbidity, suspended solids, ammonia nitrogen, total alkalinity, nitrate, nitrite and total organic carbon. In this study, water inflow flux, temporal changes and retention time of chemical species were estimated to investigate the influence factors for water quality in the reservoirs.
Feitsui Reservoir had the maximum TN concentration about 2.232 mg/L in year 2005 and the minimum was about 1.435 mg/L in year 2012. The maximum concentration of total phosphorus was about 0.081 mg/L in year 2012 and the minimum was about 0.043 mg/L in year 2005. The highest total nitrogen flux was 1011.7 t/y in year 2005 and the lowest was 132.7 t/y in year 2011. The highest total phosphorus flux was 17.5 t/y in year 2005 and the lowest was 5.8 t/y in year 2014. Although Snow Mountain tunnel was constructed till year 2005, it brought suspended particulates and dissolved substances during the construction and then to the near streams by rainfall and leaching injection. This would be one of the main reasons that increase the concentration and flux.
Deji Reservoir had the maximum TN concentration about 4.080 mg/L in year 2005 and the minimum was about 2.280 mg/L in year 2008. The maximum concentration of total phosphorus was about 0.131 mg/L in year 2013 and the minimum was about 0.024 mg/L in year 2011. The highest total nitrogen flux was 2032.7 t/y in year 2005 and the lowest was 300.2 t/y in year 2010. The highest total phosphorus flux was 34.7 t/y in year 2013 and the lowest was 3.2 t/y in year 2010. In year 2005, Haitang, Martha, Talim and Longwang typhoons phased out the terrain-erosion of earth and rocks from Chi-Chi earthquake into Dajia River. Typhones triggered massive landslides disasters and a lot of rain hillside erosion, and made the cloud degree increased or soil ingredients such as phosphorus and nitrogen flow into the reservoir. This is one of the main reasons that results reservoir eutrophication phenomenon.
Zengwen Reservoir had the maximum TN concentration about 1.765 mg/L in year 2005 and the minimum was about 0.6560 mg/L in year 2012. The maximum concentration of total phosphorus was about 0.113 mg/L in year 2005 and the minimum was about 0.049 mg/L in year 2010. The highest total nitrogen flux was 987.3 t/y in year 2005 and the lowest was 61.2 t/y in year 2009. The highest total phosphorus flux was 106.7 t/y in year 2005 and the lowest was 5.9 t/y in year 2013. In year 2009, the lowest total nitrogen concentration was found to be less 70 to 75 percent of storage traffic flow than previous years. Because of the Typhoon Morakot in year 2009, Zengwen Reservoir had serious siltation of waterways. There was a strong impact with water supply in dry seasons. The trash rack bar was driftwood debris blocked and thereby affected the power generation and permanent river ways. This is one of the main reasons that drainage channels can not normally turn on the water.
In the spring, the water quality of nitrogen and phosphorus from Zengwen Reservoir in comparison to other two reservoirs is lower. During the summer, the water quality of nitrogen and phosphorus from three reservoirs has the unimodal distribution. At the fall, the water quality of nitrogen and phosphorus from three reservoirs is Deji, Feitsui and Zengwen from high to low. At the winter time, the water quality of nitrogen and phosphorus is pretty much the same as the fall. In addition to the spring, the water quality of nitrogen and phosphorus from Deji Reservoir is higher than the other three seasons of other two reservoirs each year. It points out that the ratio changes of nitrogen and phosphorus from Taiwan reservoirs are seasonally and it’s easier to be affected by phosphorus. The nitrogen and phosphorus ratio can be affected by a variety of water sources and rainfall.
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author2 |
Chen, Hung-Yu |
author_facet |
Chen, Hung-Yu Teng, Hui-Tsung 鄧惠聰 |
author |
Teng, Hui-Tsung 鄧惠聰 |
spellingShingle |
Teng, Hui-Tsung 鄧惠聰 The study of water quality of three major reservoirs of Taiwan by using principal component analysis |
author_sort |
Teng, Hui-Tsung |
title |
The study of water quality of three major reservoirs of Taiwan by using principal component analysis |
title_short |
The study of water quality of three major reservoirs of Taiwan by using principal component analysis |
title_full |
The study of water quality of three major reservoirs of Taiwan by using principal component analysis |
title_fullStr |
The study of water quality of three major reservoirs of Taiwan by using principal component analysis |
title_full_unstemmed |
The study of water quality of three major reservoirs of Taiwan by using principal component analysis |
title_sort |
study of water quality of three major reservoirs of taiwan by using principal component analysis |
publishDate |
2015 |
url |
http://ndltd.ncl.edu.tw/handle/02160734586979432457 |
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ndltd-TW-103NTOU52760232017-03-26T04:24:14Z http://ndltd.ncl.edu.tw/handle/02160734586979432457 The study of water quality of three major reservoirs of Taiwan by using principal component analysis 以主成分分析台灣三大水庫水質之研究 Teng, Hui-Tsung 鄧惠聰 碩士 國立臺灣海洋大學 海洋環境資訊系 103 This study focuses on eutrophication level and quality in three major reservoirs of Taiwan (Northern, Central and Southern areas) to study the major controlling factors. The water monitorting data (2005-2014) include water temperature, pH, conductivity, dissolved oxygen, chlorophyll a, total phosphorus, orthophosphate, turbidity, suspended solids, ammonia nitrogen, total alkalinity, nitrate, nitrite and total organic carbon. In this study, water inflow flux, temporal changes and retention time of chemical species were estimated to investigate the influence factors for water quality in the reservoirs. Feitsui Reservoir had the maximum TN concentration about 2.232 mg/L in year 2005 and the minimum was about 1.435 mg/L in year 2012. The maximum concentration of total phosphorus was about 0.081 mg/L in year 2012 and the minimum was about 0.043 mg/L in year 2005. The highest total nitrogen flux was 1011.7 t/y in year 2005 and the lowest was 132.7 t/y in year 2011. The highest total phosphorus flux was 17.5 t/y in year 2005 and the lowest was 5.8 t/y in year 2014. Although Snow Mountain tunnel was constructed till year 2005, it brought suspended particulates and dissolved substances during the construction and then to the near streams by rainfall and leaching injection. This would be one of the main reasons that increase the concentration and flux. Deji Reservoir had the maximum TN concentration about 4.080 mg/L in year 2005 and the minimum was about 2.280 mg/L in year 2008. The maximum concentration of total phosphorus was about 0.131 mg/L in year 2013 and the minimum was about 0.024 mg/L in year 2011. The highest total nitrogen flux was 2032.7 t/y in year 2005 and the lowest was 300.2 t/y in year 2010. The highest total phosphorus flux was 34.7 t/y in year 2013 and the lowest was 3.2 t/y in year 2010. In year 2005, Haitang, Martha, Talim and Longwang typhoons phased out the terrain-erosion of earth and rocks from Chi-Chi earthquake into Dajia River. Typhones triggered massive landslides disasters and a lot of rain hillside erosion, and made the cloud degree increased or soil ingredients such as phosphorus and nitrogen flow into the reservoir. This is one of the main reasons that results reservoir eutrophication phenomenon. Zengwen Reservoir had the maximum TN concentration about 1.765 mg/L in year 2005 and the minimum was about 0.6560 mg/L in year 2012. The maximum concentration of total phosphorus was about 0.113 mg/L in year 2005 and the minimum was about 0.049 mg/L in year 2010. The highest total nitrogen flux was 987.3 t/y in year 2005 and the lowest was 61.2 t/y in year 2009. The highest total phosphorus flux was 106.7 t/y in year 2005 and the lowest was 5.9 t/y in year 2013. In year 2009, the lowest total nitrogen concentration was found to be less 70 to 75 percent of storage traffic flow than previous years. Because of the Typhoon Morakot in year 2009, Zengwen Reservoir had serious siltation of waterways. There was a strong impact with water supply in dry seasons. The trash rack bar was driftwood debris blocked and thereby affected the power generation and permanent river ways. This is one of the main reasons that drainage channels can not normally turn on the water. In the spring, the water quality of nitrogen and phosphorus from Zengwen Reservoir in comparison to other two reservoirs is lower. During the summer, the water quality of nitrogen and phosphorus from three reservoirs has the unimodal distribution. At the fall, the water quality of nitrogen and phosphorus from three reservoirs is Deji, Feitsui and Zengwen from high to low. At the winter time, the water quality of nitrogen and phosphorus is pretty much the same as the fall. In addition to the spring, the water quality of nitrogen and phosphorus from Deji Reservoir is higher than the other three seasons of other two reservoirs each year. It points out that the ratio changes of nitrogen and phosphorus from Taiwan reservoirs are seasonally and it’s easier to be affected by phosphorus. The nitrogen and phosphorus ratio can be affected by a variety of water sources and rainfall. Chen, Hung-Yu 陳宏瑜 2015 學位論文 ; thesis 145 zh-TW |