Skip to Main Content
Due to a lapse in federal funding, this USDA website will not be actively updated. Once funding has been reestablished, online operations will continue.
Modeling loblolly pine aboveground live biomass in a mature pine-hardwood stand: a cautionary taleAuthor(s): D. C. Bragg
Source: Journal of the Arkansas Academy of Science 65:31-38
Publication Series: Scientific Journal (JRNL)
Station: Southern Research Station
PDF: View PDF (798.5 KB)
DescriptionCarbon sequestration in forests is a growing area of interest for researchers and land managers. Calculating the quantity of carbon stored in forest biomass seems to be a straightforward task, but it is highly dependent on the function(s) used to construct the stand. For instance, there are a number of possible equations to predict aboveground live biomass for loblolly pine (Pinus taeda) growing in southeastern Arkansas. Depending on stem diameter at breast height (DBH), biomass varied considerably between four different prediction systems for loblolly pine. According to the tested models, individual tree oven-dry biomass for a 50 cm DBH loblolly pine ranged between 1,085 kg and 1,491 kg. Beyond this point, departures between these models became increasingly pronounced, with one even projecting an irrational decline to negative biomass for trees >138.7 cm DBH, while the others varied between 12,447 and 15,204 kg. Although some deviation is not surprising given the inherent differences in model form and three of the models were extrapolations across much of this diameter range, the difference between the extremes was unexpected. Such disparities significantly impact stand-level (cumulative) predictions of biomass in forests dominated by large-diameter individuals, as demonstrated for an existing stand (Hyatt’s Woods) in Drew County, Arkansas. Differences between these models caused loblolly pine aboveground live-tree biomass estimations in Hyatt’s Woods to vary by almost 34,000 kg/ha.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationBragg, D. C. 2011. Modeling loblolly pine aboveground live biomass in a mature pine-hardwood stand: a cautionary tale. Journal of the Arkansas Academy of Science 65:31-38.
Keywordsloblolly pine, Pinus taeda, Arkansas, biomass, pine-hardwood, carbon sequestration
- Biomass estimates of small diameter planted and natural-origin loblolly pines show major departures from the National Biomass Estimator equations
- Comparing aboveground biomass predictions for an uneven-aged pine-dominated stand using local, regional, and national models
- Predicting small-diameter loblolly pine aboveground biomass in naturally regenerated stands
XML: View XML