Skip to Main Content
Fertilization but not irrigation influences hydraulic traits in plantation-grown loblolly pineAuthor(s): Lisa J. Samuelson; Marianne G. Farris; Tom A. Stokes; Mark D. Coleman
Source: Forest Ecology and Management, 255: 3331-3339
Publication Series: Miscellaneous Publication
PDF: Download Publication (617 KB)
DescriptionThe goal of the study was to explore hydraulic traits in a 4-year-old loblolly pine (Pinus taeda L.) plantation to better understand plasticity of this species to resource availability. The influence of a factorial combination of irrigation (130 mm year-1 versus 494 mm year-1) and fertilization (0 kg N ha-1 year-1 versus 80 kg N ha-1 year-1) on stand-level transpiration, canopy stomatal conductance (GS), sapwood area to leaf area ratio (AS:AL), root area to leaf area ratio (AR:AL), and leaf specific hydraulic conductance (GL) was examined. The study site was located on the Savannah River Site near Aiken, SC. Transpiration was measured continuously over 11 months using thermal dissipation probes. Transpiration per unit ground area summed over the 11 months increased from 223 to 420 mm with fertilization, and transpiration per unit leaf area also increased with fertilization, suggesting increased growth efficiency. Fertilization increased AS:AL, GL, GS and leaf water potential but had no effect on AR:AL. Less aboveground woody biomass allocation to branches or greater growth efficiency may account for higher AS:AL in fertilized trees. Irrigation had no influence on hydraulic traits and the influence of fertilization on hydraulic traits was independent of irrigation. Fertilization increased growth whereas irrigation had little effect on growth and fertilization effects. These results indicate that hydraulic traits of loblolly pine are sensitive to nitrogen availability.
- 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.
CitationSamuelson, Lisa J.; Farris, Marianne G.; Stokes, Tom A.; Coleman, Mark D. 2008. Fertilization but not irrigation influences hydraulic traits in plantation-grown loblolly pine. Forest Ecology and Management, 255: 3331-3339
KeywordsPinus taeda, transpiration, canopy stomatal conductance, sapwood area, leaf area
- Influence of irrigation and fertilization on transpiration and hydraulic properties of Populus deltoides
- Comparative water use in short-rotation Eucalyptus benthamii and Pinus taeda trees in the southern United States
- Carry-Over Effects of Water and Nutrient Supply on Water Use of Pinus Taeda
XML: View XML