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The relations between Photosynthetic photon flux density (PPFD) and both the number of silver fir (Abies alba) seedlings per unit area and their height growth were investigated. The study was carried out in the Sudety Mts (SW Poland, 50º28’N, 16º19’E), in a forest stand dominated by spruce (Picea abies), growing on site of mixed broad-leaved mountain forest. This site type is very commonly colonized...
The available phytosociological literature were reviewed and compared with 12 original relevés made on representative of habitats of fir trees in the study area. Only in the eastern part of the Sudety Mts. silver-fir is still important forest tree. It is found most frequently in potential sites of acidophilic beech forest, which vegetation is now strongly transformed because of planting them with...
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