Forest biological production plays an important role in forest ecosystems and is significantly related to the terrestrial carbon cycle and the ecological changes occurring worldwide, so it must be considered during the evaluation of ecosystem functions. The Three Gorges Reservoir Area continues to be a hotspot for research because of its complex topography, rich species diversity and wide variety community types. The construction of the reservoir threatens the eco鄄 stability of the surrounding and downstream areas. Estimating and simulating forest climatic productivity has become necessary and will also provide evidence of vegetation restoration and land use in the Three Gorges Reservoir Area and even in the entire Yangtze River Basin. We developed a method designed to link together data from forest inventories and ecological research sites, including data from 104 permanent sample plots and 118 temporary sample plots, and combined that plot data with meteorological, topographical, leaf area index, live鄄biomass and net primary productivity ( NPP ) data collected from across the Three Gorges Reservoir Area using a GIS system. Using this large database and statistical models, the actual and potential productivities of different forest types were estimated and the annual mean temperature / precipitation, latitude, longitude and altitude were documented. Then the distribution patterns of biological production of major forest types in Three Gorges Reservoir Area were analyzed. To acquire actual measurement data of mature forest productivity is critical to predicting and simulating forest climatic productivity. Data based on natural or near natural