In this paper, we show how ecological and economic models can be linked to determine the economic impact of climate change on global timber markets. We begin by discussing some of the important issues relevant to global impact analyses such as this. We then outline our general modeling framework and discuss the particular models that will be used. Finally, we discuss some of the important issues involved with linking the two types of models. The authors would like to acknowledge the help of Ron Neilson, who provided us with information, data, and output from the ecological model, MAPSS (Mapped Atmosphere-Plant-Soil System).