| Eco-agriculture and eco-tourism are sustainable and able to upgrade China's traditional agriculture and tourism. By means of agricultural mechanization, large land scale, technological innovation, and technical intensification, eco-agriculture promotes the level of agricultural productive forces, the original ecological level of agricultural products, and the farmer's income level. And eco-tourism avoids the traditional tourism disorder to consume the resources intemperately and advocates developing tourism under the constraints of tourism carrying capacity so as to increase the taste of tourism products, the environmental protection, and the economic efficiency. At present, the major researches on the two fields are separate and independent. Although eco-agriculture and eco-tourism have already borne fruit in their independent domains, but there are still little continuous and dynamic analysis on the two industries and little research on the synergetic evolution mechanism, in particular, on the eco-agriculture and eco-tourism coupling mechanism.The research in this dissertation is very necessary for the Three Gorges Reservoir Area in the process of the economic transformation. Three Gorges Reservoir Area is rich in resources needed for the great development, but with the completion of Three Gorges Project, there have also been a series of new rural reconstruction problems yet to be resolved. First of all, the reservoir area is possessed of unique advantages for developing eco-agriculture. In addition, it is away from the industry-intensive areas and has barely-polluted soil and air, biodiversity, and comprehensive inter-species balance mechanism. Secondly, the reservoir area also has location advantages for developing eco-tourism since it is located in the golden section of Yangtze River Three Gorges Tourism gold lines, and it has the tourism industrial foundation and brand influence. Therefore, it is good to convert natural strengths and ecological advantages into commercial and economic superiority by the strong pull from eco-agriculture and eco-tourism. Moreover, the fragile ecosystem and the hollow of the industrial structure caused by Three Gorges Project and the relocation of migrants, in addition to the low-income status due to the traditional farming, call for a new type of coupling industrial system of eco-agriculture and eco-tourism in the area without intensive industries. Therefore, the research on the coupling mechanism of eco-agriculture and eco-tourism do not only provide suggestions for the industrial structure adjustment, changes of economic growth mode, and the new socialist countryside construction in the reservoir area, but also make a reference for the industrial structure adjustment in other regions.Based on the introduction of research background and significance, ideas and the content, features and innovations, as well as relevant theoretical researches, the dissertation conducted the research on the coupling mechanism of eco-agriculture and eco-tourism. The creative researches are as follows:â‘ The dissertation analyzed the mechanism of industrial coupling by employing the large-scale system theory, and attempted to establish the development model of a single and closed industrial system and the development model of a open coupled industrial system. The effect analysis on the industrial development under the different interactive relations during the industrial coupling, and the conclusion derived from the model showed that the different relations among industries had great impacts on the coupling of open industrial system. In the open industrial system, the supplementary industries led directly to industrial coupling, and under certain strong constraints, competing industries might promote industrial coupling. Among these constraints, the industrial substitution effect, the potential market scale, the resources capacity, pollution emissions, and the threshold value play the crucial role in industrial coupling.â‘¡The dissertation set up a model to depict the optimal utilization of resources, and conducted the classified description to the optimal allocation of non-renewable and renewable resources both in the closed industrial coupled system and the open industrial coupled system. It distinguished two kinds of resources development modes in the coupled industrial system, the competitive consumption and the cooperative consumption. The model indicated that cooperation was more sustainable than competition as to the resources development and consumption. The cooperative industrial coupling could extend the time of resources exploitation and use by controlling the price of resource-based products, and, to a certain extent, slow the resources consumption as well. Finally, it constructed an optimal allocation model of the coupled industrial system of eco-agriculture and ecotourism subject to constraints of resources consumption, labor force supplies, and environmental pressure and capacity.â‘¢The dissertation introduced the concept of the industrial structure negentropy and analyzed the structure negentropy of the coupled system of eco-agriculture and ecotourism in terms of mathematical model. It selected a typical area to conduct a empirical analysis to verify that, during the transition from the closed traditional agriculture and tourism industry into the open coupled industry of eco-agriculture and ecotourism, industrial development potential was strengthened, the scale of industrial development was expanded, industrial structure negentropy was lowered, and industrial systems tended to develop orderly.â‘£The dissertation discussed the coupled game behavior both between the two industries, and between government and the industrial system. The study was mainly on two main mechanisms. The study on the decision mechanism of property right management in coupled system found: the expected return derived from the strict centralized management on the coupled industrial system directly by central government would be greater than economic benefits brought from the management by local government that central government only carried out management on macro policies. Moreover, since the conclusion was made from the economic angle without regard to the environmental and social welfare losses, it was indicated that government's actual loss was actually bigger. Therefore, as a rational government, it would tend to centralize its management on the coupled system of eco-agriculture and ecotourism.The study on the profits distribution of the two industries, eco-agriculture and ecotourism, found that there existed the cooperative and competitive relations between two sectors in the coupled industrial system. Moreover, in the coupled system, there were the quasi super profits, and the superior department needed to take the incentive and punitive measures to weaken the inferior department's temptation to break an agreement. The higher proportion of the inferior department could be obtained from the repeated coupling instead of a single coupling, which could weaken the inferior department's temptation to break an agreement. At the same time, the growth rate of the profits distribution proportion gained by the inferior department from the repeated coupling should be controlled in order to prevent the superior department's tendency to break an agreement.
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