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    Author(s): Aaron Weiskittel; Jereme Frank; James Westfall; David Walker; Phil Radtke; David Affleck; David Macfarlane
    Date: 2015
    Source: In: Stanton, Sharon M.; Christensen, Glenn A., comps. 2015. Pushing boundaries: new directions in inventory techniques and applications: Forest Inventory and Analysis (FIA) symposium 2015. 2015 December 8–10; Portland, Oregon. Gen. Tech. Rep. PNW-GTR-931. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station: 31-35.
    Publication Series: General Technical Report (GTR)
    Station: Pacific Northwest Research Station
    PDF: Download Publication  (362.0 KB)

    Description

    Tree biomass models are widely used but differ due to variation in the quality and quantity of data used in their development. We reviewed over 250 biomass studies and categorized them by species, location, sampled diameter distribution, and sample size. Overall, less than half of the tree species in Forest Inventory and Analysis database (FIADB) are without a published biomass model and most of the sampled trees are less than 13 inches diameter at breast height (d.b.h.). Although some species are well represented with biomass sampled, most focus on the aboveground components and as a result, there are important spatial gaps in their sampling as there was general divergence between the observed and sampled biomass centroids. In addition, most studies we analyzed did not sample trees of poor form or vigor, which means the models may not be representative of the larger population. Currently, this information is being used to address existing biomass sampling gaps in order to develop more robust prediction models.

    Publication Notes

    • Visit PNW's Publication Request Page to request a hard copy of this publication.
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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

    Weiskittel, Aaron; Frank, Jereme; Westfall, James; Walker, David; Radtke, Phil; Affleck, David; Macfarlane, David. 2015. Gaps in sampling and limitations to tree biomass estimation: a review of past sampling efforts over the past 50 years. In: Stanton, Sharon M.; Christensen, Glenn A., comps. 2015. Pushing boundaries: new directions in inventory techniques and applications: Forest Inventory and Analysis (FIA) symposium 2015. 2015 December 8–10; Portland, Oregon. Gen. Tech. Rep. PNW-GTR-931. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station: 31-35.

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https://www.fs.usda.gov/treesearch/pubs/50167