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    Author(s): E. A. Zhitkova; L. L. Novitskaya
    Date: 2000
    Source: In: Hansen, Mark; Burk, Tom, eds. Integrated tools for natural resources inventories in the 21st century. Gen. Tech. Rep. NC-212. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station. 741-744.
    Publication Series: General Technical Report (GTR)
    Station: North Central Research Station
    PDF: View PDF  (178.56 KB)

    Description

    Fall and winter needles from pines growing near the Kostomuksha oredressing mill (KODM) were collected and studied by light microscopy. Fall needles showed symptoms of SO2 influence and no specific seasonal changes in mesophyll. The injury rates of needle surface and mesophyll showed that pollutants penetrate into the needles through stomata and cuticle. Compared to fall needles winter needles exhibited a greater number of destroyed mesophyll cells and heavy cuticle damage. The effect of the KODM pollutants is thought to reduce the tolerance of mesophyll to low temperatures. It is obvious that pine needles near the KODM suffer both from acid rain and SO2.

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    Citation

    Zhitkova, E. A.; Novitskaya, L. L. 2000. The effect of SO2 pollution on pine needle structure. In: Hansen, Mark; Burk, Tom, eds. Integrated tools for natural resources inventories in the 21st century. Gen. Tech. Rep. NC-212. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station. 741-744.

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