Simulating the growth of northern red oak seedlings and mature trees in response to ozone using TREGRO
Conference
·
· Bulletin of the Ecological Society of America; (United States)
OSTI ID:7272172
- Tennessee Valley Authority, Norris, TN (United States)
TREGRO, a single tree physiological model, was used to simulate the growth of northern red oak seedlings and mature trees, and their responses to ozone treatment. Growth and physiological data needed to parameterize the model were obtained from a field ozone fumigation experiment and the literature. Important differences in describing tree and seedling growth by the model were stomatal and mesophyll conductances, flushing frequency, degree of self-shading and organ growth rates. Experimentally observed reductions in stomatal and mesophyll conductances in response to ozone treatment were applied to the seedling and mature tree. Twice ambient ozone treatment resulted in small reductions in aboveground growth; however, coarse root biomass was greatly reduced. Differences in ozone responses between the seedling and mature tree were compared.
- OSTI ID:
- 7272172
- Report Number(s):
- CONF-940894--
- Conference Information:
- Journal Name: Bulletin of the Ecological Society of America; (United States) Journal Volume: 75:2
- Country of Publication:
- United States
- Language:
- English
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