Research on expression and update method of GDP data

The traditional spatial distributions of GDP(Gross domestic product) are calculated on the basis of administrative boundaries. This paper establishes a simulated spatial GDP model and update model instead of the traditional statistical distributions of social and economic output value which based on administrative boundaries. We use the grid analysis technology and statistical analysis technology, studies the pertinence between the land-use situation and the spatial distribution of GDP through researching the relationships among all kinds of geographical variable, then establishes the spatial distributed model of GDP. Based on the analysis of the key part of grid GDP update, the paper puts forward a grid GDP update model based on administrative polygon borders according to the simple scale model and the environmental terms´ area scale model. It resolves those problems exiting in the old method which made the spatial orientation inaccurate, inexactitude, not unification, and a series of spatial data incompact integration.