The GIS system for the Yunnan soil quality data management and analysis

Soil is one of the fundamental elements of human life. However, the growing situation of soil pollution has threatened the ecological balance of terrestrial animals and plants. In order to protect the soil environment, Yunnan Province launched a province-wide soil pollution survey. Until now the statistics and evaluation procession of the sample data has been implemented and a series of valuable results have been obtained. Based on Visual Studio as development platform, ArcEngine as embedded development component, C# as the developing language, SQL Server 2005 as the database, a system is set up to reveal the spatial relationship, distribution patterns and development trends among these results. It provides the functions of information input, maintenance, retrieval, spatial analysis, thematic mapping, etc... By using this system, the integrated management and correlation between the spatial and attribute information are demonstrated in visualization method.