Abstract: By combining macro zoning and micro quantitative classification method,for the first time,this paper realizes 3-level macroscopic division of forest productivity on national large scale based on the climate,vegetation and site classification.It realizes quantitative grading for forest productivity by using multiphase ground survey data.With Liaoning province forest productivity research results as a case,this paper introduces the technical route and method of research.The results can be used for forestry regionalization,forest ecosystem function evaluation and many other research and practice fields.

Key words: forest productivity regionalization, forest productivity quantitative classification, the normalized forest accumulation, forest growth model