Abstract: Proceeding from the concepts and characteristics of the calculating type gird and datums type gird,and combining with the characteristces of datums in the forest resources and digital forestry grid,an implement method for spatial processing service in digital forestry gird(DFG) was put forward in this paper. The systematical structure of DFG was obtained through disscussing the principle and standard system of constructing DFG in the generalized isomerism environment. The gird registration,gird discovery,and gird transport of the vector data service,and the problems about gird encapsulation tactics and its implement method,as well as the task and regulation of composing DFG,were discussed especially. Finally,the application to analyzing the potential of the converting cropland to forest project had proved DFG to the teasible.

Key words: digital forestry gird, vector data service, GIS function encapsulation