Ecological Suitability Analysis Based On GIS-ANN-GM

Ecological suitability analysis is the core of the ecological planning and the most important part of regional environmental impact assessment.It can be used to direct the ecological capability partation according to the regional and environmental development potential and capability based on reasonable assessment and planning of land resource according to the collection of the information and data of society and nature.It also can be used to choose the best manner and assessment of land-use.Considering the economic, ecological,social and political factor,the ecological suitability analysis is also used to planning the human action such as resident,industry,agriculture and traffic.Meanwhile,it also can be used to select the site of the most effective project occupied the most resource.In this paper,based on summing up the problem and objection of ecological suitability analysis,the application of the probability function neural network(PNN),Improvement back-propagation neral network(IBP) in ecological suitability analysis method was particular presented,meanwhile integrated analysis system of gray model(GM) and geography infomation system(GIS) was creationarily constituted.Then what was bring forward for the first time was GIS-ANN-GM model and application of the model in the case research of land-use resource suitability analysis in Dalian,the result of assessment with the GIS-ANN-GIS model was trusty and accuracy by the contrasting the land-use planning.In theory,the model deal the probelm mainly that deal the traditional method with subjectivity by GIS-PNN model and simplified the complex process by using GIS software.Actually,first one is conducting the ecological suitability assessment criteria and completing the research of ecological factor,and texting the assessment method and successfully comfirmed.Second one is propsing the better advice for three mind of land-use according to ecologcial suitability analysis combined the Dalian land-use planning.Finally,summary which conclude the probelm in the field of ecological suitability anaylysis and defects which was in the example of Dalian is proposed in the paper.