Construction of Lushan ecological network based on MSPA and MCR model
[Objective]In the context of the severe ecological environment,building an ecological network is an important link connecting fragmented patches and an effective way to ensure species migration and communication.[Method]Taking Lushan city as the research object and GIS technology as the core,the landscape pattern of Lushan city was analyzed by MSPA method,and then the important ecological source area was selected by landscape connectivity evaluation method.Secondly,the resistance factor evaluation system was established by AHP analysis method combined with expert scoring method to construct resistance surface,and the ecological network of Lushan city was constructed by MCR model.The gravity model was used to select important potential ecological corridors,and the optimization countermeasures of ecological network were given.Finally,the feasibility of ecological network was analyzed by using ecological network analysis method.[Result]The area of 10 important ecological patches in Lushan city was 37 946.52 hm2,Lushan and Poyang Lake were two large ecological sources;19 important ecological corridors with a length of 297.05 km were selected,mainly distributed in the central area;The three elements of the landscape were forest land,water system and cultivated land,and the corridor width was set to 300 m.After adding 3 ecological core nodes and 9 important ecological corridors,the network connection index had increased significantly,indicating that the planned ecological network of Lushan city was more feasible.[Conclusion]The ecological patches in the central urban area and the central and southern regions of the study area were fragmented,with poor landscape connectivity and lack of green space for biological habitat activities.We should vigorously improve the ecological environment of the two places.Ecological green corridors extend from the interior of the two places to the outer space.Eventually,the green corridors and greenways are intertwined into a network,covering the whole area.The research results have certain guiding significance for the urban green space system planning,the construction of ecological garden cities and the protection of biodiversity in Lushan city.
MSPAecological networkMCR modelLushan citygravity model
NETL
NSTL
万方数据
