| Based on the data systematically collected of Jiaozhou Bay on its physical, chemical, biological and geological properties as well as those on the geography, economy and social development around the Jiaozhou Bay, an information management system about the coastal zone of Jiaozhou Bay has been developed after careful study. The GIS technology is applied and a platform for systematical management with multi-functions is established, in which, image displaying, information searching, editing, statistics, analysis, dynamic display and printing, etc are integrated. On the basis of the above-mentioned work, this thesis is mainly about a preliminary study on the comprehensive managerial mode along the coastal zone under the interaction of various factors and a conceptual model has been put forward of Comprehensive Management System in Jiaozhou Bay Coastal Zone and its territorial waters. This author has made a thorough investigation into the pressing problem that Jiaozhou Bay currently faces, i.e. environmental problem, and has set up a series of models including Jiaozhou Bay hydrodynamic Model, Pollutant Transportation Model, Nutrients Capacity Model, and Petroleum Hydrocarbon Capacity Model. By applying of the above-mentioned models, it has been analyzed in this paper of the structures of tidal current and circulation, pollutant transportation and different capabilities of self-purification in different territorial waters around Jiaozhou Bay. Through the study of capacity models of nutrients and Petroleum Hydrocarbon in Jiaozhou Bay the capacity of the pollutant of nutrition and petroleum-hydrocarbon in different degrees of pollution has been determined on a quantificational basis. Finally, by setting up a coupling model between economy and environment and with the information provided by the database, as well as by taking the increasing tendency of Qingdao's GDP into consideration, this paper tries to predict the regularity for the change of marine environmental quality as well as to discuss the impact of Qingdao's economic development to the marine ecological environment around Jiaozhou Bay.Through the work done by this paper, the following achievements and conclusion have been made:A Jiaozhou Bay fundamental database of multi-disciplines and a platform for information management system based on GIS technology have been set up, which provides part of fundamental data and reference to the construction of Qingdao's "Digital Jiaozhou Bay". A Jiaozhou Bay 3 dimensional hydrodynamic Model and Pollutant Transportation Model, which adapts to the complicate seashore and can refine the near shore region with curvilinear grid, have been developed. The distribution features of tidal current field and circulation field and the current distribution features of pollutant in Jiaozhou Bay have been obtained simulatively. The physical self-purifying capacity of Jiaozhou Bay can be especially shown in the following area: two major eddies south of Haibo River-Dagu River are the active areas for pollutant to transport and spread and therefore they have good self-purifying capacity, while for most part of the northern waters, although controlled by quite a few eddy, has a comparatively poor capacity of self-purification, due to the velocity offlow which is less than 10 cm/s.Because of the comparatively high degree of eutrophication in Jiaozhou Bay, and based on dynamical nutrient distribution model in multi-substances environment, the calculating method for the self-purifying capacity and the environmental capacity of nutrient in Jiaozhou Bay as well as that for the remnant environmental capacity of nutrition have been put forward. The outcome from the calculation indicates that Jiaozhou Bay has the largest capacity of self-purification in summer and has the least capacity in winter, with spring and autumn in the medium. Between the end of 1970s and the mid 1980s, the change was relatively small and it had a remnant holding capacity of 60% in its comparative environmental capacity. From the mid and late 1980s to mid and... |
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