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Data Sources

Data on international trade in timber products were obtained from the United Nations Food and Agricultural Organization (2000a). Historical national forest timber harvest data were obtained directly from the National Forest System’s fourth quarter annual totals in the cut-and-sold reports (U.S. Department of Agriculture Forest Service 2000). National-level historical harvest and wood use and productivity information was provided by the Forest Products Laboratory (Personal communication. [2000]. Kenneth Skog, Project Leader, and Peter Ince, Research Forester, Forest Products Laboratory, One Gifford Pinchot Drive, Madison, WI 53705) and from supporting documents (Ince 2000). Pulpwood production data for the South are from Johnson (1996), Johnson and Howell (1996), and Johnson and Steppleton (1996, 1997, 1999, 2000). Removals data by type of product were provided by the U.S. Department of Agriculture Forest Service (1958, 1982), Hair (1963), Phelps (1980), Waddell and others (1989), Powell and others (1994), and Haynes and others (2001). Draft 2000 RPA projection information was obtained from Haynes and others (2002).

Input data for all SRTS projection scenarios derived from the plot-level data from the latest FIA surveys available at the time of the projection for each State in the South. The years of the latest surveys used are displayed concisely in the last two columns of a table reported in chapter 16, 1970s to 1999. The later of the two surveys were as follows: Alabama 1990, Arkansas 1995, Florida 1995, Georgia 1998, Kentucky 1988, Louisiana 1991, Mississippi 1994, North Carolina 1990, Oklahoma 1993, South Carolina 1993, Tennessee 1999, Texas 1992, and Virginia 1992. The next most recent survey for each State frames the years between which growth and removals information was obtained for the purposes of this analysis. While the oldness of certain surveys leads to potential inaccuracies due to more recent trends in those States, this was beyond our control.