碩士 / 大仁科技大學 / 環境管理研究所 / 94 / This work investigated water samples collected from Tapeng Lagoon, Taiwan. Factor analysis was conducted to explain the characteristics and the variation in the quality of water during the disassembly of oyster frames and fishery boxes. And canonical discriminant analysis is applied to identify the sources of pollution in neighboring rivers outside Tapeng Lagoon. The exchange rate of seawater does not suffice for eliminating pollutants because of the shape of the pocket. Therefore, the quality of the water is becoming worse and eutrophication is occurring. The medium to strong pollution of the Lingbeng River, the Tungkang River and the Kaoping River in the rising tide and the sinking of the inner canals during the ebb tide probably influences the pollutants in the lagoon. Much aquaculture, including oyster farming and fish cages, is conducted in the bay area, because the water is calm and rich. However, all of the fishery facilities were disassembled when the Tapeng Lagoon National Scenic Area was established in 2003. Therefore, the balance between nature and anthropogenic disturbance is broken. The result shows that the most important latent factors in Tapeng Lagoon are the climate and ocean factor, primary productivity factor, and the fishery pollution factor. The two constructed discriminant functions (CDFs) showed markedly contribution to all discriminant variables, and that total nitrogen, total phosphate, algae, and dissolved oxygen combined in the nutrient effect factor. And the water quality in the Kaoping River most strongly determined that in the Tapeng Lagoon the best is. Also disassembling the oyster frames and fishery boxes improves the water quality markedly. However, environmental topographic conditions indicate that strengthening stream pollution prevention and to constructing another entrance to the ocean are the best approaches for improving the quality of water in Tapeng Lagoon, especially by reducing eutrophication. These approaches and results yield useful information concerning ecohabitat recovery and water resource management.
| Identifer | oai:union.ndltd.org:TW/094TAJ05700009 |
| Date | January 2006 |
| Creators | Pe-Wou wang, 王丕煌 |
| Contributors | Shao-Wei Liao, 廖少威 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 68 |
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