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Proceedings Paper

Methodology for comprehensive evaluation of UV-B tolerance in trees
Author(s): Yadong Qi; Shuju Bai; Thomas G. Vogelmann; Gordon M. Heisler; Jianhua Qin
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Paper Abstract

Decreasing stratospheric ozone concentrations have led to concern for an enhanced UVB radiation (wavelength range of 280-315 nm) reaching the Earth's surface. An understanding of the mechanism of UVB radiation tolerance and sensitivity may improve our ability to assess the potential effects of changes in solar UVB radiation on plant species. The purpose of this research was to conduct an assessment of tolerance of southern trees to future enhanced UVB radiation. This paper describes the systematic approach developed for such an assessment and the preliminary results associated with thirty-five broadleaf tree species in the South studied during two growing seasons. Results indicated that the diverse trees in the South possessed various biological characteristics in defense of UVB damage. It is suggested that the approach to comprehensive evaluation of UVB tolerance in diverse trees should focus on leaf optical properties, mainly depth of light penetration into leaves, leaf anatomical and morphological changes, and concentration of leaf UVB absorbing compounds during leaf development.

Paper Details

Date Published: 17 January 2002
PDF: 14 pages
Proc. SPIE 4482, Ultraviolet Ground- and Space-based Measurements, Models, and Effects, (17 January 2002); doi: 10.1117/12.452940
Show Author Affiliations
Yadong Qi, Southern Univ./Baton Rouge (United States)
Shuju Bai, Southern Univ./Baton Rouge (United States)
Thomas G. Vogelmann, Univ. of Wyoming/Laramie (United States)
Gordon M. Heisler, U.S. Dept. of Agriculture Forest Service (United States)
Jianhua Qin, Southern Univ./Baton Rouge (United States)

Published in SPIE Proceedings Vol. 4482:
Ultraviolet Ground- and Space-based Measurements, Models, and Effects
James R. Slusser; Jay R. Herman; Wei Gao, Editor(s)

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