| The soil is non-renewable resources which is the important component of land. People can not product and live in daily life without the soil resource. Making good use of the soil resource is the premise of fine agricultural production and well ecological cycle. However, as the economic developing and the growth of population soil pollution is increasing, which threatens the safe of lives and food. In order to clarify the situation of soil pollution, and reduce the harm caused by it on h uman, State Environmental Protection Administration conducted a survey over our country as well as the Yunnan province in2006.The State Environmental Protection Administration of Yunnan province disposing1718sites include of organic pollutant, inorganic pollutant, physicochemical property and pesticide residue and so on. The school of information of Yunnan University has been commissioned to develop the supervising system for soil antipollution of Yunnan province. This system can manage the soil quality and spatial database but can not response the relative of the elements and background values.In order to analyze the reasons of the soil pollution, this paper designed and developed the modules that can analyze the relativity of the soil pollution and background values as well as the soil cluster modules, which were base on the SQL Server2005, ArcEngine, and Visual Studio2005. It could display the results in the way of chart and map render, which is an important evidence for the soil protection for the Yunnan province.The three following missions were finished in this paper:1,The relativities of the supervised data and the background were analyzed for the13elements including Cr, Ni,Cu, V, Co, Mn, Pb, Zn, As, Se,Hg, F, Cd.2,The symbiosis correlations were analyzed in this paper, which based on the system cluster and K-means cluster. The source data of the cluster can be received on the maps or the drop-down box. The correlation among the elements can be revealed by results of the clusters. For the high correlation elements, the content of the one element can be controlled by another one's, which can reduce the workload of the soil protection. The results indicate that the relativity of the Pb and Zn is highest and the relativity of Cu and V is the second.3,The correlations of the same element in the different samples were analyzed in this paper which base on the K-means cluster and FCM, which can reveal the regional of the pollution elements.This paper reveals the present state, reasons and trends of the soil pollution of the Yunnan province in different angles, which has important directive to the soil protection. |
