The Study On Ecological Security In Different Areas Of Changsha City

As an important area in the rise of central China strategy and an experim-ental area of two-oriented society construction,Changsha City is no longer opt-imistic in recent years in terms of eco-environment with economic developmen-t,population growth and urban expansion.The per capita ecological carrying c-apacity and per capita ecological footprint of all districts and counties in Cha n-gsha City from 2006 to 2015 were calculated by emergetic ecological footpri n-t model,which was modified by economy,science,technology and manpowe r factors,the results from 2016 to 2025 were predicted by GM(1,1)model,the-n the per capita ecological deficit were calculated.According to the findings,p-er capita ecological deficit from 2006 to 2025 presents three change trends:A gradual increase is seen in downtown districts of Furong,Tianxin,Kaifu,Yu el-u and Yuhua;For Changsha county,a relatively stable status is observed,w hi-ch displays no significant increase or decrease,however,Wangcheng district,Ni-ngxiang county and Liuyang city experience a observious change from gra dual increase in earlier stage to decrease in the later stage.Based on this findi ng,Changsha City is divided and classified into ecological red area,ecological yell-ow area and ecological blue area with further analysis of ecological secur ity and ecological footprint structures.The ecological red zone is found to be slig-htly unsafe and its ecological footprint structure is unreasonable and prese nts a-nabatic trend;while the ecological yellow and blue present relative securi ty in ecological aspect and a relatively more balanced structure in ecological f ootprin-t within the researched period.The research conclusions will provide re ference-s for the two-oriented society construction and sustainable development of Cha-ngsha city.