Air-pollution injury on Pinus strobus in Great Smoky Mountains National Park - 1985 survey results. Final report
Visible symptoms of ozone injury were observed on 90% of the Eastern white pine trees (Pinus strobus) sampled in 1985 from permanent plots at Great Smoky Mountains National Park. Average injury was low and affected about 4% of the needle surface. Twenty-five percent of the trees sampled had more than 5% injury to needles. Only 6% of the trees sampled had more than 10% injury. Fleck injury was the most common ozone symptom encountered, followed by tipburn and chlorotic mottle. Total ozone injuries observed were lower than those observed in similar samples at Acadia National Park; however, trees at Great Smoky Mountains National Park had notably higher injury from biotic and abiotic causes.
- Research Organization:
- Butler Univ., Indianapolis, IN (USA). Holcomb Research Inst.
- OSTI ID:
- 6503869
- Report Number(s):
- PB-87-172110/XAB; HRI-95
- Country of Publication:
- United States
- Language:
- English
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