碩士 / 國立臺南大學 / 環境生態研究所碩士班 / 95 / The purpose of this study is to understand light attenuation property and its effects on the primary productivity of Zen-Wen Estuary. Field survey and water quality sampling were conducted between April and September 2006. Variation of light intensity along the depth was recorded at five monitoring stations. Water samples were taken and analyzed for factors affecting light attenuation, including chlorophyll-a concentration, chromophoric dissolve organic matter absorbance (CDOM) and tripton. Primary productivity was calculated from solar radiation, chlorophyll-a concentration, and photosynthesis efficiency parameters using formula reported in literatures. Measured light attenuation coefficient in the Zen-Wen Estuary ranged between 0.73 and 5.20 m-1 with an average of 2.07 m-1. It is on the high side of estuaries with similar hydrological and climatic conditions. Tripton accounted for most of light attenuation with a 53.7% contribution, followed by an 8.0% from CDOM, and 7.2% from phytoplankton. Light attenuation model for Zen-Wen Estuary was found to be kd=[0.008Chl-a]+[0.29CDOM]+[0.074Tripton]+0.612, R2=0.53. Verification using field data showed that light attenuation coefficient of the Zeng-Wun Estuary can be predicted fairly well using this regression model. Primary productivity of the Zen-Wen Estuary ranged from 0.009 to 670 gCm-2d-1. Chlorophyll-a concentration was by far the most important controlling factory on primary production, which explained 83.2% of primary production variation. The effect of inorganic turbidity on the primary productivity was less significant than expected.
| Identifer | oai:union.ndltd.org:TW/095NTNT5587008 |
| Creators | Shu-chuan Hu, 胡淑娟 |
| Contributors | Chi-chin Hwang, 黃家勤 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 82 |
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