Comprehensive Assessment Of Island Ecological Security Based On Dpsir Model

The island’s economy will become the next Chinese economy growth pole, and blue economic zone’s development has caught more and more attention of the country. China has abundant island resources, so the development and utilization of these resources is of great strategic significance for the construction of economic power. Island tourism has developed rapidly especially in the field of modern tourism industry. This form of tourism has made great progress in China’s tourism industry and become an indispensable project in planning in many countries and regions. On the one hand, the development of island tourism promotes the development of the marine economy, helps the transition from the primitive agriculture, fisheries to the third industry and optimizes the local industrial structure. On the other hand, tourism has also accelerated the process of island resources’ destruction, to a certain extent, destroyed the original ecosystem and reduced their ecological defense capabilities.Based on a comprehensive collection of factors about the tourist island’s ecological security, this study takes the ecological safety concept as a starting point and establishes tourist island ecological security evaluation index system.In order to provide a basis for tourist island ecological security evaluation and decision making, the study uses the model to evaluate Changhai island.Firstly, concepts relating to tourism island ecological security are defined, including the scope of tourist island, the island’s ecological safety and the related factors, followed by the identification and classification of important factors affecting the ecological security of tourist island, such as the natural, social and economic factors, etc.Secondly, with reference to the particularity and vulnerability of the island regions as well as existing research, the study summarizes the island ecological security and its features. Based on the concept of ecological security and DPSIR model, an ecological evaluation system which is flexible and authoritative is established.Thirdly, the index weight is determined by entropy method. Entropy method is an objective weighting method and has been applied in many fields. Similar to variance weighting method, entropy method determines indicator’s weight based on the size of information it could provide. With application of the comprehensive index method, relevant data are calculated and analyzed, including the performance of sub-criterion layer and factor layer. Finally, through in-depth study of ecological security evaluation index system of tourist island, we find out:The proportion of tertiary industry in GDP, the ratio of the number of tourists and the local population, ect, are the most important four factors; Two dimensions of state and pressure indicators are the lowest performance indexes, so we can focus on these indexes to reduce the pressure to take remedial measures; Response indicators are the Most volatile indicators in this five years, indicating the local government yet continued to implement positive improvements, causing some impact on ecological security of the research subject; Overall, Changhai tourist islands ecological security situation showed a gradual downward trend during the study period, and urgent to develop a series of comprehensive measures to this situation.