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    Author(s): Göran Ståhl; Jeffrey H. Gove; Michael S. Williams; Mark J. Ducey
    Date: 2010
    Source: European Journal of Forest Research. 129: 993-1000.
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: View PDF  (359.34 KB)


    In this paper, critical length sampling for estimating the volume of downed coarse woody debris is presented. Using this method, the volume of downed wood in a stand can be estimated by summing the critical lengths of down logs included in a sample obtained using a relascope or wedge prism; typically, the instrument should be tilted 90° from its usual orientation in sampling live trees. The critical length of a downed tree is the length of the log section large enough in diameter to be counted from the selected sample point. A simulation study was conducted to compare critical length sampling with diameter relascope sampling and perpendicular distance sampling.

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    Stahl, Goran; Gove, Jeffrey H.; Williams, Michael S.; Ducey, Mark J. 2010. Critical length sampling: a method to estimate the volume of downed coarse woody debris. European Journal of Forest Research. 129: 993-1000.


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    critical height sampling, dead wood, forest inventory, relascope sampling, simulation

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