Environmental Capacity Value Loss Evaluation Research Of Coastal Reclamation Projects In Bay Based On The Numerical Simulation

The marine not only provided abundant production and living materials and expansive space resources for human, but also afforded a number of ecosystem services. Waste disposal was one of them. Waste water, gas and residue that generated from human’s production and living activities directly and indirectly entered the sea through the earth’s surface and underground runoff, excretion, leaching and atmospheric precipitation. In terms of a particular sea area, its ability to buffer, assimilate and purify the sea garbages, making it have a certain capacity and loading to them, and generally called this as the marine environmental capacity.Marine environmental resources had long been used by free or a little payment. Marine environmental capacity was a limited environmental resource, the ability to degrade the pollutants limited by its natural conditions for a sea area. Reclamation Projects would make the scarcity of marine environmental capacity more and more highlighted. This article prepared on the perspective of environmental capacity value loss evaluation caused by recalmation projects in bay, using numerical simulation method, through theoretical analysis, evaluation method and case study to evaluate the marine environmental capacity value loss caused by recalmation projects. This research had obviously practical significance and academic value.This paper summarized the domestic and foreign theory and practice of water environmental capacity and water environmental capacity value, including marine environmental capacity and marine environmental capacity value. Based on environmental economics, physical oceanography, environmental science, environmental management and other multi-disciplinary theory,through literature query, data collection, theoretical analysis, model building and case study to carry out the research. This essay discussed the definition and basic characteristics of marine environmental capacity value, constructed the evaluation model of marine environmental capacity value loss caused by recalmation projects in bay based on some related theory, and took an example of Shacheng Harbor in Fujian province for case research. The main achievements of the dissertation were as follows: Firstly, by means of consulting, reviewing and summarizing domestic and foreign literatures, this paper defined the definition of the marine environmental capacity value, analyzed marine environmental capacity’s basic characteristics and applied the utility value theory, label value theory and ecological environment value theory to explore the exist, composition and various factors which affect the value size of marine environmental capacity.Secondly, through consulting related literatures, this paper sumed up the advantages and disadvantages of shadow price model, alternative marketing model and fuzzy comprehensive evaluation model which were used to evaluate the marine environmental capacity value. In consideration of the special situation of reclamation projects, that was to a certain period of reclamation projects, the economy, society, science and technology conditions could be regarded as the same, so the marine environmental capacity value loss caused by reclamation projects only related to the change of the natural factor, and then built the evaluation model of marine environmental capacity value loss caused by recalmation projects in bay.Thirdly, two dimensional barotropic average water depth hydrodynamic model and its coupling with pollutant diffusion model was introducted. Choosing reclamation projects in Shacheng Harbor of Fujian province as study case, applying the model and method into this case, and finally got the result of environmental capacity loss value caused by reclamation projects in Shacheng Harbor. The result showed that the loss value was very large, as high as572.459764million yuan per year, and the loss value per unit area was60.32yuan per square meter per year. Comparing to the sea area use fee in Shacheng Harbor, the value loss was higher than it. Therefore, the relevant administrative department should organize experts and scholars to do deep research and investigation, and scientifically and reasonably formulated the standard of sea area use fee to reclamation projects on the basis of extensive participation. Then the marine ecological compensation fee should been collected as soon as possible so that it could really reflect the value of marine environmental capacity resources and make the losses from reclamation to the minimum, controlled reclamation requirements and guaranteed the sustainable development of the marine environment.