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    Author(s): Thomas Gaman; Kevin Casey
    Date: 2002
    Source: In: Standiford, Richard B., et al, tech. editor. Proceedings of the Fifth Symposium on Oak Woodlands: Oaks in California's Challenging Landscape. Gen. Tech. Rep. PSW-GTR-184, Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture: 625-637
    Publication Series: General Technical Report (GTR)
    Station: Pacific Southwest Research Station
    PDF: View PDF  (710 KB)

    Description

    California has 18+ million acres of land owned by the USDA Forest Service. This is almost 20 percent of the area of the state. From 1994-2000 the Region 5 Remote Sensing Lab collected forest, vegetation and fuels inventory data from thousands of permanent monitoring plots established on diverse sites on Forest Service lands throughout the region. The plots are stratified among 165 vegetation types, or strata. Collectively, these data are known as the Regional Forest Inventory and Analysis (FIA) database. An analysis of the plot data for California’s oak, including species, distribution and stocking is presented. These wildlands are rich in many species of oak. Based upon the FIA survey, there are 433 million (+/– 1 percent) oak trees over 5 inches in diameter on Forest Service lands in California. Eleven percent of all trees on the Region 5 ownerships are species of the genus Quercus or Lithocarpus. They can be expected to be encountered on 87 strata which collectively occupy 11.5 million acres of land. Sixty-three strata, together comprising 6.6 million acres, have combined average oak basal area greater than 5 square feet per acre.

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Gaman, Thomas; Casey, Kevin 2002. Inventory of oaks on California''s national forest lands. In: Standiford, Richard B., et al, tech. editor. Proceedings of the Fifth Symposium on Oak Woodlands: Oaks in California''s Challenging Landscape. Gen. Tech. Rep. PSW-GTR-184, Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture: 625-637

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