Effect of vertical canopy architecture on transpiration, thermoregulation and carbon assimilation
Abstract
Quantifying the impact of natural and anthropogenic disturbances such as deforestation, forest fires and vegetation thinning among others on net ecosystem—atmosphere exchanges of carbon dioxide, water vapor and heat—is an important aspect in the context of modeling global carbon, water and energy cycles. The absence of canopy architectural variation in horizontal and vertical directions is a major source of uncertainty in current climate models attempting to address these issues. This work demonstrates the importance of considering the vertical distribution of foliage density by coupling a leaf level plant biophysics model with analytical solutions of wind flow and light attenuation in a horizontally homogeneous canopy. It is demonstrated that plant physiological response in terms of carbon assimilation, transpiration and canopy surface temperature can be widely different for two canopies with the same leaf area index (LAI) but different leaf area density distributions, under several conditions of wind speed, light availability, soil moisture availability and atmospheric evaporative demand.
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1438360
- Report Number(s):
- LA-UR-17-29137
Journal ID: 1999-4907 (Electronic)
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Forests
- Additional Journal Information:
- Journal Volume: 9; Journal Issue: 4
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; Earth Sciences; canopy turbulence; transpiration; carbon assimilation; thermoregulation
Citation Formats
Banerjee, Tirtha, and Linn, Rodman Ray. Effect of vertical canopy architecture on transpiration, thermoregulation and carbon assimilation. United States: N. p., 2018.
Web. doi:10.3390/f9040198.
Banerjee, Tirtha, & Linn, Rodman Ray. Effect of vertical canopy architecture on transpiration, thermoregulation and carbon assimilation. United States. https://doi.org/10.3390/f9040198
Banerjee, Tirtha, and Linn, Rodman Ray. Wed .
"Effect of vertical canopy architecture on transpiration, thermoregulation and carbon assimilation". United States. https://doi.org/10.3390/f9040198. https://www.osti.gov/servlets/purl/1438360.
@article{osti_1438360,
title = {Effect of vertical canopy architecture on transpiration, thermoregulation and carbon assimilation},
author = {Banerjee, Tirtha and Linn, Rodman Ray},
abstractNote = {Quantifying the impact of natural and anthropogenic disturbances such as deforestation, forest fires and vegetation thinning among others on net ecosystem—atmosphere exchanges of carbon dioxide, water vapor and heat—is an important aspect in the context of modeling global carbon, water and energy cycles. The absence of canopy architectural variation in horizontal and vertical directions is a major source of uncertainty in current climate models attempting to address these issues. This work demonstrates the importance of considering the vertical distribution of foliage density by coupling a leaf level plant biophysics model with analytical solutions of wind flow and light attenuation in a horizontally homogeneous canopy. It is demonstrated that plant physiological response in terms of carbon assimilation, transpiration and canopy surface temperature can be widely different for two canopies with the same leaf area index (LAI) but different leaf area density distributions, under several conditions of wind speed, light availability, soil moisture availability and atmospheric evaporative demand.},
doi = {10.3390/f9040198},
journal = {Forests},
number = 4,
volume = 9,
place = {United States},
year = {Wed Apr 11 00:00:00 EDT 2018},
month = {Wed Apr 11 00:00:00 EDT 2018}
}
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Works referencing / citing this record:
Comparing the transpirational and shading effects of two contrasting urban tree species
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