Study of the effect of silvicultural treatments and exposure on the morphology of the leaf: case of the green oak of the region of Tlemcen (north-west of Algeria)
Keywords:
Tlemcen forest, Quercus ilex L., leaf morphology, cardinal directions, silvicultural treatments.Abstract
In the forest area of Tlemcen, green oak on its large expanse is abundantly represented in two forms: simple coppice and trees on stump. This study, try to verify the effect of the silvicultural treatments and exposure on leaf morphology. To this end, we tested this hypothesis on 240 mature leaves of these two populations collected from the four cardinal directions.
The results show that the length of midrib is 4.85 cm in the case of high trees, 4.80 cm in the coppices. The surface of leaf-blade is 8.87 cm2 in the high trees and 8.35 cm2 in coppices. Angle of insertion of the secondary rib with the main rib is 122.86° in the case of high trees, 121.22° in the coppices. Variance analysis indicates that there is no effect of the silvicultural treatments and exposure on leaves morphological parameters.
