Air pollution impact on the content of carbohydrates in the needles of Norway spruce
2000
Mandre, M. | Kloseiko, J. (Estonian Agricultural Univ., Tartu (Estonia). Forest Research Inst.)
It was ascertained that the content of soluble sugars, starch and ratios between different forms of carbohydrates varied in the trees growing in areas affected by industrial production in Kohtla-Jaerve and Kunda. The ratio of soluble sugars to starch is a good indicator of the state of trees in industrial areas. This ratio depends on the level of air pollution. In the studied areas a strong relationship between the content of soluble sugars and N, Mg and K was observed in the needles of Norway spruce
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