This newly online database from the Carbon Dioxide Information Analysis Center (CDIAC) provides detailed geographically referenced information on "actual and potential biomass carbon (1 g biomass = 0.5 g C)" in tropical Southeast Asia (in 1980). These data are critical components of the larger effort to quantify the role of changing land use in greenhouse gas production. The database includes detailed information [ARC/INFO, ASCII formats] on vegetation, land use, and biospheric carbon content; helpful background and data descriptions help further orient the user.