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    Author(s): Steen Magnussen; P. Boudewyn; M. Gillis
    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. 116-128.
    Publication Series: General Technical Report (GTR)
    Station: North Central Research Station
    PDF: View PDF  (674.6 KB)

    Description

    A proposed national forest inventory for Canada is to report on the state and trends of resource attributes gathered mainly from aerial photos of sample plots located on a national grid. A pilot project in New Brunswick indicates it takes about 2,800 square 400-ha plots (10 percent inventoried) to achieve a relative standard error of 10 percent or less on 14 out of 17 estimates of forest strata (cover type) proportions; it takes about 3,300 plots of similar size to achieve the same precision target on 68 of 85 strata type x age proportions. Minimum cost solutions for fixed targets of relative precision and power include plot sizes from 71 to 192 ha and sampling intensities from 0.2 to 3.5 percent. Multivariate solutions exploiting the covariance in the data called for less sampling than univariate solution.

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    Citation

    Magnussen, Steen; Boudewyn, P.; Gillis, M. 2000. Towards a plot size for Canada''s national forest inventory. 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. 116-128.

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