Research And Application Of Guizhou Province Spatial Data Sharing Service System Based On Web GIS

Internet provides a spacious social requirement for geo-spatial data, as it comes to the development of internet. Sitting in front of computer, People could get numerous type of spatial position information via internet. The fundamental thought is that internet provides spatial information and let customer can explore or get data from spatial information system. It is just the geo-information requirement from internet that enables the swift development and invention of Web GIS.Web GIS could utilizes Internet/Intranet to publish spatial data, providing spatial data explore, analysis and query function. Compared with concentrated GIS, Web GIS is inherently superior in its comprehensive area, independent platform, relatively low system cost, simple regulation and effective computation load. After a period development, Web GIS is widely applied to many vocations, and also, showing its function.As the Web GIS based spatial data shared system and net communication optimization technology, along with distributed storage function, the present Web GIS system sample is still scarce, which compounded by the lack of relatively strong data sharing property and system compatibility property. Moreover, low communication speed and internet reaction.Based on the Web GIS analyzed deeply, this paper point out and resolve some shortage in Web GIS, also, present applied Web Service technology to construct Web service oriented Web GIS. Furthermore, we creatively address the problem of platform develop and data sharing service. To accomplish spatial data sharing system, the solitary goal, we analysis how to construct a Web GIS Service based spatial data sharing system of Guizhou province, publishing spatial data to internet in the form of map. In addition to realize geography related information in spatial data sharing system, the data sharing is also performed that enables systematic management and effective decision.This application is grounded on the ArcGIS Server; utilize .net technology and C# to construct Web GIS based spatial data sharing system of Guizhou province. The whole system, with effective develop structure, along with good intersection, could read data from database more effective via optimized net cache technology.