Study On Suitability Evaluation Of Land Reclamation

As the material basis of human survival and development, land is not only the labor resources of the social production, also the basic means of production of agricultural production. Land, the most basic and most important means of production and living materials, is the source of all production and all existence, and closely associated with the development of human beings.Acting as the indispensable production materials of human economic development and social progress, ecological problems and social problems have appeared accompanied by the huge economic benefits, which is derived from the land. With the development of social economy and large tracts expansion of the city, the cultivated land turn into the construction land largely. At the same time, the exploitation of mineral resources, the construction of railway and highway and so on, make the large-scale destruction of land resources and the contradiction more severely between human and land. Therefore, it is urgent to restore the land productivity by proceeding land reclamation and solving a series of problems induced by mining.This paper, on the basis of domestic and foreign research and related theory of land reclamation,such as land resource science,economics,land evaluation,soil sci ence,extenics,fuzzy mathematics,agriculture etc,initially formed a set of practical la nd reclamation suitability evaluation method for the study area. taking Xiao Chang di quartz sand mine Anning city of Yunnan province as a sample. This paper mai nly include the following sections:① Combined with the mining area land features, the paper deeply analyzed the mining area land failure mechanism and the factors influencing the land quality, and selected land quality evaluation index, on this basis of which formed land reclamation suitability evaluation index system including appropriate tillage,suitability for forestry、 appropriate garden three directions, and determined the rating and classification standard.② Based on the theory of extenics and fuzzy mathematics, the paper adopted the comprehensive integration method to distribute the index weights, the improved fuzzy comprehensive evaluation method for suitability evaluation, and the distribution of the trapezoidal membership function to determine the membership degree of indicators. Then the mathematical model of land reclamation suitability evaluation of the study area has generated.③Through using the evaluation model in the study area, combining with the actual situation of the research region suitability evaluation, analyzing evaluation results contrastively, this paper has determined the final direction of land reclamation in the study area.Trough the empirical research,the area is not suitable for reclamation of cultivated land,suitable reclamation into woodland and garden plot and the suitability level is moderate.