Background for Alaska forest type groups map.
In 1991, the U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station, Forest Inventory and Analysis (SO-FIA) research unit began a project to map forest land distributions for the United States. The project was performed in support of the Forest and Rangeland Renewable Resources Planning Act (RPA) 1993 Assessment Update program to provide information on current forest and rangeland conditions. The RPA mapping project was completed in December, 1992.
Advanced Very High Resolution Radiometer (AVHRR) data from National Oceanic and Atmospheric Administration satellites were used as the primary source of information for this project. Forest type groups maps of the contiguous U.S. and Hawaii were produced by SO-FIA. The forest type groups map of Alaska was produced by the Pacific Northwest Forest and Range Experiment Station, Anchorage Forestry Sciences Lab (Alaska FIA unit), in cooperation with the U.S. Geological Survey, EROS Data Center, Alaska Field Office, Anchorage.
During the mapping project, all Forest Service FIA research units assisted with reference data and provided technical comments and reviews. The U.S. Geological Survey, EROS Data Center in Sioux Falls, SD, assisted in satellite data acquisition and provided important ancillary data layers.
The U.S. forest type groups map will be published by the U.S. Forest Service with the 1993 RPA Forest Resources report. This CD-ROM contains data files and associated descriptive text files for forest type group maps of the lower 48 states, Alaska, and Hawaii, and a forest density map of the lower 48 states.
For more detailed information about the RPA project and techniques used to produce the maps, please refer to the publications listed in the References below, or contact Zhiliang Zhu or David L. Evans, Southern Forest Experiment Station, Forestry Sciences Lab, P O Box 906, Starkville, MS 39759, telephone (601) 324-1611.
Powell, Douglas S.; Faulkner, Joanne L.; Darr, David; Zhu, Zhiliang; MacCleery, Douglas W. [in press]. Forest resources of the United States, 1992. Gen. Tech. Report. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station.
Zhu, Zhiliang; Evans, L. David. 1992. Mapping midsouth forest distributions. Journal of Forestry. 90(12):27-30.
Additional copies of this data disc may be purchased for $50.00. For further information on purchase of data, please write or call:
Data Request Coordinator
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