Skip to main content
Journal cover image

Leaf temperature and its dependence on atmospheric CO2 and leaf size

Publication ,  Journal Article
Konrad, W; Katul, G; Roth-Nebelsick, A
Published in: Geological Journal
February 1, 2021

There is general concern that the rapid increase in atmospheric CO2 concentration will lead to reduced stomatal conductance and subsequent increases in leaf temperature. Such an increase in leaf temperature is expected to adversely impact a plethora of processes connected to leaf metabolism and microbial/fungal communities on leaves. A model is proposed that combines the leaf energy balance with leaf gas exchange and photosynthesis to explore such issues. The model represents a hybrid ecological/physiological approach described by systems of equations based on steady-state leaf-gas exchange theories and leaf energy/radiation balance, equilibrium thermodynamics within the leaf, stomatal data, and atmospheric CO2 concentration. The model allows separating air from leaf temperatures thereby permitting exploration of the dependence of leaf cooling or heating for any combination of environmental conditions (e.g., wind velocity, atmospheric humidity, and atmospheric CO2 level), anatomic leaf properties (e.g., leaf size), and physiologic quantities (e.g., assimilation rate and transpiration rate). The model permits to distinguish whether leaf cooling or heating is to be expected if these parameters are varied. Based on model calculations, it is shown that leaf temperature is far more impacted by leaf size or wind speed than reduction in stomatal conductance caused by elevated atmospheric CO2. The model results are consistent with measurements of leaf cooling and heating.

Duke Scholars

Published In

Geological Journal

DOI

EISSN

1099-1034

ISSN

0072-1050

Publication Date

February 1, 2021

Volume

56

Issue

2

Start / End Page

866 / 885

Related Subject Headings

  • Geology
  • 3705 Geology
  • 3703 Geochemistry
  • 0404 Geophysics
  • 0403 Geology
  • 0402 Geochemistry
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Konrad, W., Katul, G., & Roth-Nebelsick, A. (2021). Leaf temperature and its dependence on atmospheric CO2 and leaf size. Geological Journal, 56(2), 866–885. https://doi.org/10.1002/gj.3757
Konrad, W., G. Katul, and A. Roth-Nebelsick. “Leaf temperature and its dependence on atmospheric CO2 and leaf size.” Geological Journal 56, no. 2 (February 1, 2021): 866–85. https://doi.org/10.1002/gj.3757.
Konrad W, Katul G, Roth-Nebelsick A. Leaf temperature and its dependence on atmospheric CO2 and leaf size. Geological Journal. 2021 Feb 1;56(2):866–85.
Konrad, W., et al. “Leaf temperature and its dependence on atmospheric CO2 and leaf size.” Geological Journal, vol. 56, no. 2, Feb. 2021, pp. 866–85. Scopus, doi:10.1002/gj.3757.
Konrad W, Katul G, Roth-Nebelsick A. Leaf temperature and its dependence on atmospheric CO2 and leaf size. Geological Journal. 2021 Feb 1;56(2):866–885.
Journal cover image

Published In

Geological Journal

DOI

EISSN

1099-1034

ISSN

0072-1050

Publication Date

February 1, 2021

Volume

56

Issue

2

Start / End Page

866 / 885

Related Subject Headings

  • Geology
  • 3705 Geology
  • 3703 Geochemistry
  • 0404 Geophysics
  • 0403 Geology
  • 0402 Geochemistry