Abstract
Ecological security is posing challenge for human survival and development. In the world, the situation of ecological security is getting more and more severe, so that in some regions the ecological destruction has begun to impede heavily the sustainable development of social economy, there exist many conflicts that may trigger ecological crises, ecological security is critical in promoting petitiveness of a region. Therefore, the ecological security assessment(ESA) has been consequently getting increased attention from the researchers. On the basis of extensive absorption of related research fruits at home and abroad, the thesis makes a profound and systematic research on the theoretical methods and application of regional ecological security evaluation.
First, discusses the background of formation of regional ecological security theory and its research frame, summarizes the present research conditions, and illustrates the significance and frame of research.
Second, starting with the analysis of the concept and basic characteristics of ecological security, the concept of ESA is introduced, and the basic theories of ESA are discussed. The concept of the ESA system has been studied from the point of view of the
system engineering for the first time. The ponents of the ESA system are:the
main bodies, the targets, the objectives, the standards and the methods of ESA,
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