乌梁素海生态保护地理信息系统的设计与开发

Design and Development of GIS for Ecological Protection of WuLiangShuHai

在VB.NET环境下,研究探讨了系统的总体结构、数据库设计和系统功能设计以及总氮预测模型的建立。对SuperMap Objects 5.2进行二次开发,实现地图的管理与分析等功能;用VB.NET中的DataGridView控件与ADO.net数据访问方法,与SQL server数据库连接,实现基础数据的存储、修改与查询等功能;通过VB.NET提供的控件建立总氮模型;结合GPS在地图上精确定点技术与卫星图片栅格数据的处理技术,初步实现了"4S"系统的集成,将为乌梁素海生态治理工程建立智能化的信息处理平台。

Under the environment of VB.NET, based on the demand of ecological protection for WuLiangShuHai, the system＇s whole structure,database design and systematic functions requirement had been researched seriously, Beside, the establishment of total nitrogen forecast model also had been put considerable study. SuperMap Objects 5.2 was re-developed, successfully carrying out management and analysis behavior for vector data and raster data, achieving connecting with SQL sever ,realizing the query o f figure information and attribute information between each other.Utilizing the method of ADO.net data accessing, connecting the control of Data Grid View in VB.NET and SQL sever, essential data memory, revision and inquiry functions were implemented. Total nitrogen model was established by the control provided by VB.NET . The technique of DrowString which belongs to the Graphics of VB.net to show the result was used and the diagram of curves which can show each condition nitrogen along with time variation was drawed. Combining the technology of precisely pointing for GPS on the map and the technology of raster image data processing, preliminarily achieving the ＂4S＂ systems integration., which would lay solid foundations for establishment intelligent information platform on the project of Wuliangshuhai.