Study on architecture of WebGIS based on SOA

SOA(Service-Oriented Architecture) is an architecture of software design suitable for changing environment,in which the difficulty in the sharing of data and operations can be removed to a certain extent.Conceptual framework,hierarchical relations,implementing framework and service implementing modes of WebGIS architecture based on SOA were designed.As a case study,a land use planning management information system for Yubei district,Chongqing city was implemented through XML-based Web service technology.The feasibility and validity of the architecture has been verified preliminarily.