Research On Landscape Ecological Security Assessment Of The Nanjing Jiangning Economic And Technological Development Park

In the process of rapid urbanization, population increasing, environmental degradation, increasing degree of landscape fragmentation, a series of "city disease" frequently appear while many cities’ economy grows rapidly, as a result, it causes serious human existence crises. The high-tech development park is an important part of urbanization process, its development directly affects the urban replacement and the sustainable development, thus the development of the high-tech development park is closely related to the above mentioned problems, the research of landscape ecological security in such field has become a hot issue.As a state-level economic and technological development park and the highly development urban area of Nanjing, Jiangning economic and technological development zone has become the most attractive area in Nanjing. The research of landscape ecological security assessment of Jiangning economic and technological development park can provide some constructive suggestions to development park from the perspective of landscape ecology, and it plays an important role in promoting the sustainable development of regional society, economy and ecology, it can also provide valuable reference to other development parks’ sustainable development at the same time.In the first three chapters in this paper, first of all, the current urbanization development background and the present condition of the domestic economic and technological development park construction is briefly analyzed, and this paper expounds the typical significance of the selected case combined with the research object’s location, ecological characteristics, function orientation, etc. Then the domestic and foreign relevant research dynamic are described, it analyze the value of this paper in the current study of the similar part, and according to the research purpose, the main theories, research methods of this article are expounded. Secondly the related concept, basic principle of urban landscape ecological security are discussed in this paper, and it gives detailed analysis of the research content which from the urban landscape ecological security assessment in this article, covering the connotation of the evaluation, evaluation index system, weight, unit, evaluation model and so on, then the paper expounds the constructing basic steps of the urban landscape ecological security pattern combined with the theory of landscape ecological security pattern. Next, within data investigation and related data summary, the present situation of the ecological environment of the development park has carried on the preliminary analysis, this paper analyzes the status quo from economic development situation and natural conditions, land use, landscape ecological elements changing, environmental pollution, etc. The main ecological problems affecting the development park’s sustainable development are identified, which provide background support to establish the development park landscape ecological security evaluation index system.In chapter four and chapter five, the investigation and analysis of the present situation and problems of landscape ecological security of the Jiangning economic and technological development park are made based on the theory of landscape ecology and ecological safety assessment related theory. Then taking landscape ecological security issues as a starting point, this paper builds a comprehensive assessment index system for the development of the park’s landscape ecological security assessment. According to the principle of index selection, several indicators from different fields are selected. Then using ERDAS, GIS and Fragstats to deal with the related data processing and extraction, and this paper make out the landscape ecological security evaluation index of the development park combined with AHP method and the comprehensive assessment method. Based on the general level of urban landscape ecological security, it analyzes the current development of landscape ecological security situation. According to the results of the quantitative score and the problems in the landscape ecological system, this paper determines the optimized plan for the construction of landscape ecological security combined with field investigation and comprehensive analysis of remote sensing images, as building a reasonable landscape ecological security pattern. According to the existing landscape ecological security problems of the development park, this paper puts forward relevant strategies from different angles to promote the development of development park’s landscape ecological security level.In the last chapter, the research results are summarized in this paper, and it gives the basic conclusion, the main innovation points and deficiencies are pointed out, and this paper puts forward some thoughts based on the reality and expectations of the future of the landscape ecological security assessment.