The Pattern Evolution Of Ecological Land In Changsha-Zhuzhou-Xiangtan Core Area

The land use spatial pattern has been changed with the speeding up of the urban expansion and new urbanization,especially the change of ecological land leads to a serious imbalance between the structure and function of ecosystem and affects directly the survival and development of human beings.With the accelerating integrat ion of Changsha-Zhuzhou-Xiangtan urban agglomeration,The change of land use ways especially the increase of construction land results in a serious change in the structure and function of ecological land,which has highlighted the importance of pattern evolution of ecological land in Changsha-Zhuzhou-Xiangtan Core Area.We select hangsha-Zhuzhou-Xiangtan core area as a case study,and the ecological land spatial pattern change as an expressing pointcut.Applying discipline theory basis with urban planning,landscape ecology,geography,mathematics and computer.With the help of ENVI,ArcGIS,SPSS statistical analysis softwares and the research methods of spatial analysis and spatial overlay technology,this paper researches on ecological land pattern evolution in combination with the changes of land use structure and spatial pattern.Setting three scenario goals,which are the natural growth,land use planning and ecological protection.On the basis of the Logistic regression analysis and the land use conversion rules,the CLUE-S model was constructed to simulate and predict land use change for the three scenario goal.Through comparison and analysis,the study puts forward a optimized scheme in ecological land spatial pattern.The results show that: the speed of land use change has obvious phase,which mainly reflected in the reducing drastically in ecological land and the growing rapidly in construction land,three major cities gathered to each other and the space structure tend to integration.CLUE-S model is suitable for the simulation of land use change in study area.Considering the expansion of construction land has a different way in different scenario goal,the optimization method is to adjust measures to local conditions in order to realize reasonable al location of resources,control and prevention ecological risk effectively and strengthen the elasticity of planning.The results of the study provides data support for dynamic change and monitoring and has a good reference in theory and method for planning management and decision makers and other multicore urban agglomeration in optimization and control of ecological land structure and function.