The Southwest Sensitive Zone's And The Ecological Capacity's Theory As Well As Their Application Research

From the middle of 20 century,there have been many key factors to limit the human social development,which are bloated population,resource shortage,environmental deterioration,ecosystem destroy,unemployment crisis and poor spread.The world got a same view,through researching and practising in a long time, that is the world must sustain the natural resource amount and its sustainalbe use in order to own the human socially sustainalbe development.Ecological sensitive zone is a special area,in which ecoenvironment strongest change and eco-question easyest appearanece,also is a critical zone which is concerned with the area's ecosystem sustainbale development and the ecoenvironment compositive treatment.In order to research the ecological sensitive zone,it is need to analysis its ecological sensitivity.Ecological sensitivity means the ecosystem's sensitive degree according to human action's effection,that is to say the possibility of producting the eco-unbalance and the ecoenvironmental problem.The ecological sensitive analysis is the base to do ecological programming.It isn't consist to a certain theory and method system now because the ecological sensitivity is concerned to areas complexity and factors diversity.Reading the correlative papers,there is little q ecosystem capacity's uantitative research aimming at the ecological sensitive zone.This paper complements the connotation of ecological sensitive zone's theory,constructs the ecological sensitive zone's evaluating indicator system,also deeply do analysis and research on choseing and defining the index,based on the analyse the world environmental condition and connectted with the overseas and domestic research status.It is detailed analyse and explain the indicator system by using the GD-AHP and CA etc.Based on it,this paper also analysing and evaluating the ecological sensitivity of Qiandongnan Miao and Dong Autonmous Prefecture at first.On the basic of caculating and analysing the prefecture's ecological capacity changed in ten years,it caculates and evaluates the tourism environmental capacity of the prefecture,which provides the quantitative support.The related research content and the research results obtained are mainly comprised of:It is detailed analysing and explaining the ecological sensitive zone's concept and connotation based on the overseas and domestic research status.It advances that traditonal meaning of ecological sensitive zone doesn't really reflect the relation of human and nature, so the ecological sensitive zone does not only been limited in the natural ecosystem but also been considered the sensitive zone in the human-land action system.The ecological sensitive zone is a result by all kinds of ecological factors' compositive action,such as nature,economy,society etc.Thus the ecological sensitive zone should be divided through the each factor which constitutes to the ecological factors.It constructed the ecological sensitive zone's evaluating index system,which contains atmospheric environment,watery environment,land environment,existent environment,geological environment and hunmanity environment,those six systems are relationship,complementarity each other and are hiberarchy and structure.It also explaining how to get,evaluate,caculate and divide the every indicator's degree.It caculated and summarized the way to confirm weight value.On the basis of detailed analyse and explain the whole evaluation methods' type and step,it confirmed the way to caculate weight value by using GD-AHP and expert grade way.At last,it do the verification caculation and analysis by using the CS.Through the spot investigation,data collection,it firstly juged and analysed the Qiandongnan Miao and Dong Autonmous Prefecture's ecological sensitivity connecting the built ecological sensitive zone's evaluating indicator system,at the same time,it confirmed area's sensitive factors and those sensitive degree. According to the caculation,humanity environment's weight value is the best,is 0.3328,the next is geological environment,is 0.1850,and the residuary indicator weight value is existent environment＞land environment＞watery environment＞atmospheric environment.The nation and folk-custom's weight value is the best in the humanity environment,is 0.3914.Detailed and affirmatory indicator provided theoretical and actual basis for area's ecoenvironmental construction and protection,and area's industry structure composition.By using the CA method,it caculated and analysed the Qiandongnan Miao and Dong Autonmous Prefecture's ecological sensitivity.The score of Qiandongnan Miao and Dong Autonmous Prefecture's ecological sensitivity is 0.71,which is the high sensitive area according to the score of sensitive degree,and its high sensitive factor mainly focus on the humanity and geological environment,so it is necessary to analyse the area's ecoenvironmental status and ecological capacity.It calculated the Qiandongnan Miao and Dong Autonmous Prefecture's ecological capacity by using ecological footprint model.It bring the eco-footprint per 10⁴ RMB GDP to the paper and also calculate the index.Through the calculation,it gained the result that the ecological footprint and ecological deficit of Qiandongnan Miao and Dong Autonmous Prefecture are increased year by year, which through 0.072653 hm².per capita^-1,-0.276606 hm².per capita^-1 in 1997 to 1.19992 hm².per capita^-1,0.320988 hm².per capita^-1 in 2006.,but the ecological capacity of these area is decrease year by year,through 1.003136 hm².per capita^-1 in 1997 to 0.878932 hm².per capita^-1 in 2006.Thus means that Qiandongnan Miao and Dong Autonmous Prefecture's development own the big depression and infection on its ecoenvironment.But Qiandongnan Miao and Dong Autonmous Prefecture's the eco-footprint per 10⁴ RMB GDP is decrease year by year,through 4.948272 hm².per capita^-1 in 1997 to 3.212474 hm².per capita^-1 in 2006,thus means resource useful effective enhance more fast than before in Qiandongnan Miao and Dong Autonmous Prefecture.By exploitation policy to china west, the area's economic rise way has a good development trend.At last,it sum up the method to realize the ecological sustainability development in Qiandongnan Miao and Dong Autonmous Prefecture.It also calculate and evaluate Qiandongnan Miao and Dong Autonmous Prefectur's tourism environmental capacity by using the matter element analysis method.At last,it gained the calculation that Qiandongnan Miao and Dong Autonmous Prefectur's tourism environmental capacity lies in sustainable development.It is a viable way to enhance the prefecture's economic development by scientific and effective exploitation the prefecture's tourism resource.The research fruit provide value calculation for Qiandongnan Miao and Dong Autonmous Prefectur's governments when they do the decision-making.At last,this paper does the expectation for the development of ecological sensitive zone theory and of the ecological capacity's connotation calculation method.