Study On Evaluation Of Tourism Ecological Security Based On SD And DPSIRM Model

With the advent of the mass tourism era,tourism development activities continue to increase.The relationship between the development of tourism and humans is getting closer and closer,and the negative effects of tourism activities are becoming more and more obvious,which is easy to cause the integrity of the structure and function of the tourism ecosystem to be damaged.Tourism ecological safety assessment can provide the status and evolution characteristics of the local tourism ecological safety system,and provide a scientific basis for sustainable tourism development.Taking Wu'an City as the research area,based on the DPSIRM causal model,the system dynamics model is used to build the internal driving mechanism of tourism ecological security.Based on this,18 causality indicators were selected in turn from the six dimensions of driving force,pressure,state,influence,response and management.The subjective and objective combination method is adopted to determine the index weights,and then the weighted comprehensive evaluation method is used to spatially show the evolution of the six indexes.Combining cold and hot spot analysis tools to classify tourism ecological security,according to the problems and spatial characteristics of the zoning,the countermeasures of tourism ecological security regulation in Wu'an City are proposed.The main findings are as follows:(1)Exploring the driving mechanism of the tourism ecological security system and building a system dynamics SD causality cycle diagram.The system dynamics model of tourism ecological security is composed of three subsystems: ecological environment,social economy and tourism development.The ecological environment is the resource foundation for system development,and the social economy provides the driving force for system strengthening.Tourism development is the core guarantee for system development.Based on the strength of the system variables,eight standard variables including ecological land area,total population,and tourist reception were determined.(2)Tourism ecological safety evaluation and zoning based on DPSIRM.With the help of the SD model,the causal circulation chain is constructed,and the DPSIRM indicator system is obtained after splitting the mechanism and indicator attributes of each DPSIRM submodule.Then the dynamic evolution of the six subsystems is evaluated separately.The results show that,except that the dominant level of the medium and lower states has not changed,the dominant level of other systems presents higher + medium ? medium + lower driving force,medium + higher ? medium + lower pressure,medium + high ? Medium + low impact,low + low ? medium + low response,low + lower ? high + medium management change characteristics.Using cold-hot spot analysis method,Wu'an city's tourism ecological security level is divided into grade ?,grade ?,grade ? and grade ? gradient areas from weak to strong,which are located in the middle,northeast,southwest and northwest respectively.(3)According to local conditions,based on tourism behavior,put forward countermeasures for the regulation of tourism ecological security in Wu'an City.Aiming at the problems existing in the tourism ecological security system of each subregion,the adjustment and control path around "driving prevention and control-pressure relief-state optimization-impact improvement-response upgrade-management enhancement" is optimized.The control measures are carried out from five aspects: prevention and control of tourism safety and environment,integration of tourism resources,improvement of tourism supporting service capabilities,talent management and environmental awareness.