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Influence of species composition and forest age on leaf area index

Kram K.

Polish Journal of Ecology

1998

Vol. 46, no 1

75-88

Investigations of leaf area index (LAI) were performed in forest stands of pine, beech as well as birch, alder, spruce, larch and oak using the LAI-2000 Plant Canopy Analyser made by American corporation LI-COR. Canopy LAI has been found to differ considerably depending on both dominant tree species and stand age. From among the species examined spruce exhibited the highest LAI amounting to 10.0 m^2 m^-2, where other species had much lower LAI-s (within a range 1.6-6.3 m^2 m^-2).Canopy LAI increased rapidly in young stands attained a peak at approximately age 20 and decreased slowly thereafter. It has been revealed that projected leaf area of an individual tree increases linearly as the tree grows older.