Tree seedling growth and leaf element accumulation in open-top chambers near an urban–industrial area
| Autor: | L. S. Dochinger, J. R. McClenahen |
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| Rok vydání: | 1981 |
| Předmět: | |
| Zdroj: | Canadian Journal of Forest Research. 11:275-281 |
| ISSN: | 1208-6037 0045-5067 |
| Popis: | Growth and element accumulation in leaves of Pinusstrobus L., Prunusserotina Ehrh., Fraxinusamericana L., and Quercusrubra L. seedlings were investigated using open-top chambers at a site 11 km from an industrial city in Ohio, U.S.A. Treatments consisted of chambers receiving either carbon-filtered air or ambient air, and an ambient-air plot. Height of Pinusstrobus and total biomass and stem diameter of Prumusserotina were significantly greater in the ambient-air chamber than in the filtered-air chamber after 2 years, but leaf biomass was not affected. Compared with the ambient-air plot, chamber environment alone enhanced growth of Prunusserotina. Growth of the other species tested was not affected by any of the treatments. Ambient air did not significantly contribute to the concentrations of most leaf elements, whereas differences between years and between ambient and chamber environment had significant effects on P, K, Ca, Pb, and Zn accumulation. Changes in nutrient status brought about by chamber effect or annual climatic differences could in turn alter plant response to air pollutants. |
| Databáze: | OpenAIRE |
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