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    Author(s): Richard T. Busing
    Date: 2000
    Source: In: Hansen, Mark; Burk, Tom, eds. Integrated tools for natural resources inventories in the 21st century. Gen. Tech. Rep. NC-212. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station. 265-271.
    Publication Series: General Technical Report (GTR)
    Station: North Central Research Station
    PDF: View PDF  (301.12 KB)

    Description

    From 1992 to 1997, standardized plots were established at about 500 sites in California, Oregon, and Washington as part of the national Forest Health Monitoring program. In California, 197 plots were established from 1992 to 1995; in Oregon and Washington, a total of 304 plots were established in 1997. Summarization of baseline data by state reveals similarities and differences among states. Trend analysis of the California data reveals few changes in forest structure variables, but substantial changes in certain crown indicator variables. For example, foliage transparency and crown dieback variables indicated improved crown condition since the 1992 drought. Additional trend data will allow further assessment of changes in tree condition in relation to environmental changes.

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    Citation

    Busing, Richard T. 2000. Forest health monitoring in California, Oregon, and Washington: results and interpretation. In: Hansen, Mark; Burk, Tom, eds. Integrated tools for natural resources inventories in the 21st century. Gen. Tech. Rep. NC-212. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station. 265-271.

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