Research on integration method of GIS-based application model based on web service composition

Aimed at the problems in the process of integration of GIS and application model,such as redundancy,difficulty to reuse the model and so on,the advantages of web services composition technology are pointed out,and a model-driven web services composition method is proposed,and then the model decomposition method,web services composition process,web services selection method and implementation technology are described in details.A viable solution for GIS to expand its application functionality is provided.Finally it take the process of earthquake disaster emergency command as an example to illustrate the method,the result shows the method can effectively improve the flexibility and reusability of model integration process.