Based on detailed discussion of the current status of geospatial information resources application and development of geospatial information technologies,this paper proposed a geospatial information service mechanism supported by multi-tier heterogeneous geospatial databases.

Mutual Conversion Model of Heterogeneous Spatial Data Files Based on Aggregative Data Structure for GML;

With the development of the application of Geographic Information Systems in each step of life,the sharing of multi-source and heterogeneous spatial data becomes a necessary need.

Organization criterion of multi-source data and heterogeneous spatial data conversion are two important aspects in database construction of coastal zone of Zhejiang province.

Study the Ways of Integrating the Spatial Date from Different Trades about Geologic Hazard;

Then some variation laws of the correlative distance and spatial variability coefficient are gained by statistic analysis of shear strength indexes of several typical.

The spatial variability coefficients of the indexes for Taiyuan silty clay were compiled.

Variation laws of spatial variability coefficient about physical and mechanical index are gained by using random field model of soil profile and engineering characteristic are illustrated by analyze soil indicators.