Design and Implementation of China Earthen Site GIS Based on ComGIS

摘要

Earthen site is a kind of unmovable historical relic. In China, there are huge numbers of earthen sites existing with rich of information about them being accumulated. However, most of information is saved in traditional methods with low informational level so difficult to access. In order to improve the efficiency of using earthen sites' information and promote the conservation of earthen sites, this study establishes China Earthen Site Geographic Information System (CESGIS)to realize the informational management of China earthen sites. For the sake of storing and managing thematic data, the Earthen Site Database (ESDB)was setup firstly by using SQL Server software, which takes SuperMap SDX+ as its spatial search engine and the format of SuperMap complex dataset as the storage format for vector data. C/S framework was adopted so as to improve the flexibility of the system. In order to reduce the difficulty of development and improve efficiency, Component GIS (ComGIS)technique was employed to finish the secondary development of the system. CESGIS has the function of data gathering, outputting, storage, editing, inquiry and display of earthen sites' information, and provides an efficient platform for the earthen sites information conservation and management.