碩士 / 國立臺灣海洋大學 / 海洋環境資訊系 / 107 / The partitioning and distribution of different forms, including dissolved and particulate inorganic and organic P (DIP, DOP, PIP and POP), of phosphorus in an eutrophic estuary, the northern Taiwan, were studied by means of measuring their concentrations in the estuarine waters. In addition, estuarine sedimentary phosphorus (SP) were also determined by the sequential extraction method which divides the SP into five fractions. The total dissolved and particulate P concentrations within the estuary ranged within 0.42-12.42 μM and 482-16087 mg/kg, respectively, and the distributions generally exhibited the removal behavior. DIP and PIP generally accounted for more than 80% and 60% of the TDP and TPP pool, respectively, within the middle estuary. However, DOP became dominant in the lower estuary because DIP concentration significantly decreased with increasing salinity and DOP concentration remained fairly constant within the estuary. The partitioning coefficient, Log(KD), of P between the dissolved and particulate phases ranged within 4.03-4.59 and the values seemed to be independent upon with salinity and SPM concentrations within the estuary. The total concentrations of SP within the estuary ranged within 398-1780 mg /kg and was chiefly dominated by the Fe-bound fraction, accounting for 30-79% of the total SP pool. Detrital P played the second important fraction and accounted for 10-62% of the total SP pool. In addition, the total concentrations of SP positively correlated with total organic carbon and negatively correlated with sediment grain size, suggesting that the TOC and sediment grain size play important roles influencing the total concentrations of SP.
| Identifer | oai:union.ndltd.org:TW/107NTOU5276006 |
| Date | January 2019 |
| Creators | Wang, Chen-Wen, 王辰文 |
| Contributors | Fang, Tien-Hsi, 方天熹 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 49 |
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