Evaluation And Optimization Of Ecological Space In Shangluo Central District Based On Resilience Theory

The rapid urbanization process has brought about a series of urban ecological space problems,such as the reduction of biodiversity,ecological management investment is too large.Shangluo central urban area as one of the important cities in the hinterland of Qinling Mountains,its ecological security is also threatened under such environment.However,the ecological space with strong "resilience" will not face the above problems.Therefore,in this study,the theory of resilience was introduced into the study of urban ecological space,and the central urban area of Shangluo was taken as the research space scope to explore the evaluation and optimization methods of ecological space based on the theory of resilience,so that the ecological space could develop in a sustainable and healthy way through its own defense and resistance to external interference.Based on the theory of resilience,and combined with the theory of urban ecological space,this study summarized four "resilience" characteristics of urban ecological space,namely rapidity,robustness,redundancy and intelligence.Profile according to the center of shangluo city ecological space and urban ecological space "toughness" characteristics,using literature research and expert investigation method to determine evaluation index,the analytic hierarchy process(ahp)and entropy value method combining both qualitative and quantitative methods,calculation of index weight,build center of shangluo city ecological space based on the theory of the toughness evaluation system.The evaluation system was used to evaluate the "resilience" of the ecological space in the central urban area of Shangluo in 2019 and the "Master Urban Plan of Shangluo City(2011-2020)".The evaluation results are as follows: in2019,the level of "resilience" of ecological space is Ⅲ,and the ability is general;The ecological space "toughness" of Shangluo City Master Plan(2011-2020)is rated as Ⅱ,indicating strong capability.Based on the analysis of the evaluation results of the "resilience" of the ecological space in Shangluo central urban area,it is concluded that the "resilience" of the ecological space in Shangluo central urban area is insufficient because of its weak robustness,redundancy and wisdom.Therefore,it is optimized from the two aspects of land use and space.The specific contents are as follows: Increase the area of small parks or reduce the number of small parks,so that the coverage of park green space service radius reaches the standard,while balancing the landscape pattern and strengthening the robustness;The current idle land in Jinfeng Mountain should be developed to increase the forest area and enhance the redundancy.According to the different functions and construction status of water bodies in the central urban area,three natural design schemes of water shoreline are proposed,including section construction,shallow water channel and ecological revetment,so as to improve the naturalization rate of water shoreline and enhance its wisdom.After optimization,the "resilience" level of the ecological space in Shangluo central urban area reaches Ⅰ level,and the "resilience" ability of the ecological space is strong,which can resist external interference through its own development and is developing positively.