博士 / 國立中山大學 / 海洋環境及工程學系研究所 / 97 / Marine aquaculture has become one of tendencies as many countries aware of that the marine resources are not in the sustainable development from the threat of over fishing. Marine aquaculture will eventually replace the world fishing harvest as being a major stream industry in the future. Meanwhile, fast growing marine aquaculture has caused the potential problems in marine environment. A successful marine aquaculture must rely on comprehensive environmental information and monitoring, including well-designed planning and management scheme. This study research the suitable environmental indicators to predict the impact of marine environment related to marine aquaculture including comprehensive environmental data information and suitable modeling. The use of approaches consists of environmental monitoring program (EMP), sediment metals, organic carbon, redox potential, and sulfide as indicators.
The survey results at Chuwan and Erkan of Penghu Island showed that sediment, redox potential, and sulfide are important environmental indicators with exception of metals. Under water survey showed that Chuwan and Erkan sites have no major accumulation of wastes from cage aquaculture operation. The current flow of these sites is downstream outward to the sea that results no serious deposition of wastes. These influence the geochemical composition and sediment, suggesting the complexity of marine environmental problems on the use of environmental indicators for monitoring and assessing the impacts. Because of the special environmental condition, we have used the geographic information system (GIS) to evaluate the affect and condition of marine cage sites. The survey results will be useful for farming management strategies and environmental carrying capacity to reduce the risk of cage farming or to accomplish the guidelines and sustainable development of marine aquaculture.
This research also reports the economic effective analysis on major farming operators in Penghu, include the data envelopment analysis (DEA), to measure the variables of production inputs and outputs related to farming operation. The evaluation on the relationship of variable products should be useful in the operation and data management of cage farming. The regulations on marine aquaculture are also made to compare with Norway, United States, Japan, China, and Canada.
| Identifer | oai:union.ndltd.org:TW/097NSYS5282009 |
| Date | January 2009 |
| Creators | Yi-che Shih, 施義哲 |
| Contributors | Wen-Yan Chiau, Yang-Chi Chang, Chiu L. Chou, 邱文彥, 張揚祺, 周秋隆 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 205 |
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