It is quite important for the GIS's applied models to support their special decision system. So the development of the management system of the applied models

their base and the research of the realizable technology has become the key to GIS's further application. In the paper

series of technical problems in relevance to GIS's applied models have been analyzed in retrospect of GIS's technical development and its function. At the same time

relevant programs and approaches have been put forward in order to solve such problems as model's effective management

sharing and security

the integration of the GIS and applied models

the communication mechanism of model base and database

model visualization its mutual operation and so on. At the conclusion of the paper

in combination with the "Ninth-five" plan

"the demonstration system for the spacial information share and service of the environment protection will be built"

the model realization of the approcah and technology has been described

with an example of the planar pollution and diffusion models in Yangtze River.