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    Author(s): C.W. Woodall; C.E. Fiedler; R.E. McRoberts
    Date: 2009
    Source: Environmentalist. 29: 301-309.
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: Download Publication  (544.85 KB)


    Forest ecosystems may be actively managed toward heterogeneous stand structures to provide both economic (e.g., wood production and carbon credits) and environmental benefits (e.g., invasive pest resistance). In order to facilitate wider adoption of possibly more sustainable forest stand structures, defining growth expectations among alternative management scenarios is crucial. To estimate the effect of tree size and spatial distributions on growth for forest structures commonly considered in uneven-aged forest stand management, large (0.2 ha+) plots were established in 14 uneven-aged ponderosa pine stands in eastern Montana. All study trees were stem-mapped and measured for diameter and 10-year sapwood and basal area increment. A generalized growth model was developed to predict both total and merchantable 10-year basal area increment for nine hypothetical stand structures [three diameter distributions (reverse-J, irregular, flat) × three spatial distributions (clumpy, partial clumpy, uniform)].

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    Woodall, C.W.; Fiedler, C.E.; McRoberts, R.E. 2009. Effects of tree size and spatial distribution on growth of ponderosa pine forests under alternative management scenarios. Environmentalist. 29: 301-309.

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