Research On Evaluation Method Of Comprehensive Bearing Ability Of Soil In Chao Hu Lake Based On GA-PPE

The evaluation of comprehensive bearing ability of soil is an evaluation for the threshold of soil bearing ability,based on a list of factors such as the natural resources of soil and ecosystem of the soil.The assessment of bearing ability of soil becomes the social hot spot as the process of industrialization continues to accelerate and as the bearing ability of soil declines continuously because of the environmental deterioration.There is a realistic significance for reference to analyze,to research,to evaluate the condition of the bearing ability of soil in Chao Hu Lake which is the core region in terms of the economic development in Anhui Province and to offer theoretical ground for taking advantage of land resources appropriately.The indicators of this evaluation possess some traits including but not limited to: wide range,multi dimension,great amount,combination of subjective and objective so that traditional methodology for processing indicators' data which is mainly used for low dimensional data cannot be applied to multi-dimensional analysis,becoming the difficulty of the evaluation.In response to this difficulty,this paper proposes a Genetic Algorithm-Optimized Projection Pursuit Model(GA-PPE)for multi-level and high-dimensional index processing,and conducts a study on the evaluation of land comprehensive carrying capacity.The main research contents of this dissertation are as follows:1.Introduce the current research concerning the comprehensive bearing ability of soil.Generally describe the comprehensive bearing ability of soil from sole area to multi areas,analyze the principle of selecting indicators of soil bearing ability,illustrate the fundamental theory of the assessing method for the comprehensive bearing ability of soil.2.Construct an evaluation index factor to assess the comprehensive bearing ability of soil.From the definition of the comprehensive ability of soil point of view,via investigation and analysis of the geographic environment economic condition and current usage of land of Chao Hu Lake,we make an initial judgement of the comprehensive bearing ability of Chao Hu Lake.Secondly,we construct an evaluation system,which combines the current status of social development and region characteristics,to filter the main factors that have an impact on the comprehensive bearing ability of soil in Chao Hu Lake to assess the comprehensive bearing ability of soil and to offer assessing basis for the model calculation in the following context.3.Contribute an assessment model based on GA-PPE.Firstly,create component analysis model,entropy model,standard deviation weighted model and optimized inheritance algorithm for projection tracking model to solve the soil bearing ability at each region around Chao Hu Lake and assess its bearing condition.On the second,compare bearing ability result from each model and then acknowledge that the result of comprehensive bearing ability of soil which derives from optimized inheritance algorithm for projection tracking model is the closest to that of scientists assessment.At Last,compute the sole bearing ability in Chaohu Lake region with the help of optimized inheritance algorithm for projection tracking model.4.Design and develop Strategic analyzing platform for multi planning complex of land usage in Chao Hu Lake and having been applied in practice.To sum up,the GA-PPE evaluation and analysis of comprehensive bearing ability of soil in the Chaohu Lake Basin has both theoretical and practical significance.It not only provides strategic support for the land development and utilization of the region,but also provides practical and scientific support for the regional urbanization,ecological civilization and the sustainable development of the economy.