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.
Stand-level Allometry in Pinus taeda as Affected by Irrigation and FertilizationAuthor(s): J.S. King; T.J. Albaugh; H.L. Allen; L.W. Kress
Source: Tree Physiology 19, 769-778, 1999 Heron Publishing. Victoria, Canada
Publication Series: Miscellaneous Publication
PDF: View PDF (291 KB)
DescriptionChanging environmental conditions have the potential to alter allometric relationships between plant parts, possibly leading to ecosystem-level feedbacks. We quantified allometric shifts in field-grown loblolly pine (Pinus taeda L.) in response to altered resource availability based on data from multiple harvests to correct for size-related changes in biomass partitioning. A replicated factorial arrangement of irrigation and fertilization treatments was applied for 4 years to an 8-year-old loblolly pine plantation on a well-drained, low fertility site in North Carolina. Destructive and nondestructive growth measurements were used to develop treatment-specific regressions to estimate stand-level biomass for ephemeral and perennial plant parts, both above- and belowground. Stand-level allometric analysis indicated that irrigation increased biomass partitioning to fine roots and decreased partitioning to foliage, relative to other plant parts. Fertilization increased partitioning to perennial tissues (coarse roots, taproots, and branches) and decreased partitioning to ephemeral tissues (foliage and fine roots). Changes in allometry were small (< 6 %) but statistically significant, indicating that biomass partitioning in loblolly pine changes with altered resource availability, but is probably under strong ontogenetic control.
- 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.
CitationKing, J.S.; Albaugh, T.J.; Allen, H.L.; Kress, L.W. 1999. Stand-level Allometry in Pinus taeda as Affected by Irrigation and Fertilization. Tree Physiology 19, 769-778, 1999 Heron Publishing. Victoria, Canada
Keywordsbiomass partitionaing, ephemeral tissue, fine roots, foliage, loblolly pine, ontogenetic control, perennial tissues, resource availability
- Above- and below-ground biomass accumulation, production, and distribution of sweetgum and loblolly pine grown with irrigation and fertilization
- Stand Density Effects on Biomass Allocation Patterns and Subsequent Soil Nitrogen Demand
- Below-ground carbon input to soil is controlled by nutrient availability and fine root dynamics in loblolly pine
XML: View XML