Health condition of young spruce stands growing in Poľana  in different altitudesČaňová I. (2002): Health condition of young spruce stands growing in Poľana  in different altitudes . J. For. Sci., 48: 469-474.
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This paper presents the first results of chlorophyll fluorescence measurements on assimilatory apparatus of Norway spruce. Three young spruce stands located in various altitudes (600, 1,050 and 1,250 m above sea level) were selected for the measurements. Chlorophyll fluorescence a was measured by a portable fluorimeter PEA. These measurements were performed on three needle year-classes. We found greater stand damage on the areas which are located in higher altitudes, but only at the end of growing season.


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