The construction of traditional large-scale central power plants and the extension of power lines in Taiwan have tremendous difficulties in terms of land acquisition and environmental protection for a long time. In addition, one potential risk of energy supply is that over 95% of energy source is imported overseas. Therefore, the most important goal of Taiwan energy policy is to cut down the amount of energy import. To achieve the goal, it is important to explore innovatively local energy source by developing renewable and clean energy. Around the available renewable energy technologies, wind power technique is the most mature one in addition to hydraulic power generation. However due to limited land resources and restrictive regulations, it is expected that wind farm development in Taiwan can only be located offshore, instead of inland. Besides, a multi-functional wind farm site, which involves ocean farm ranch, is desirable to bring mutual benefits for both developers and local stake holders. The current study has used System Dynamics(SD) to analyze the influence of Multi-functional offshore wind farm on economic. We discuss the change of fish catch with building offshore wind farm¡Aand the change of economic output in open ocean with offshore wind farm combine marine ranching. It is therefore easy for the decision makers to comprehend the economical benefit difference if an offshore multi-functional wind farm were to develop in the future. The result of this study is building offshore wind farm will reduced the fishing revenue in a short time¡Abut the total fishing revenue will increased in a long time. The Multi-functional offshore wind farm has better economic output than offshore wind farm.

Based on research showing the serious environmental damage associated with conventional aquaculture, coastal marine ranching has been promoted by the Chinese government as an ecological and environmentally friendly way to produce aquatic products and simultaneously restore the marine environment. However, marine ranching is a general concept and there are significant differences among the three main types. This study initially focuses on commercial marine ranching to distinguish it from other types by identifying its unique features, functions and goals. Examining institutional frameworks of commercial marine ranching operations reveals the evolving interactions and interrelations between key actors in the network. The analysis adopts a modified social network theory approach that incorporates Chinese guanxi culture in a case study of the White Dragon Islet marine ranching project to research commercial marine ranching in China. Semi-structured interviews were conducted to collect details from each group of key actors, including the private sector, government, and local communities. Key outcomes of the research include developing a better understanding of the types of marine ranching in China and important insights into changing relationships developed from acquaintance to intimacy and then to trustworthiness within the institutional framework of a successful commercial marine ranching project. The thesis concludes by highlighting key practical implications for government policy and for commercial marine ranching practitioners to improve the implementation of such operations in China. / Graduate