Quelques paramètres foliaires liés au bilan d'eau des strates ligneuses de trois types de forêts belges

Leaves samples were taken in three adjoining forest plots : an alluvial alder and ash wood, a ravine maple wood with North exposure and a boxtree grove on a dry and sunny slope oriented to the South. The potential water content, the surface development and the grades of succulence and sclerophylly were measured. These parameters show clear differences between the three chosen sites and thus define synecological characteristics classifying principally the three forest communities in terms of the radiation balance of the biotopes. The species common to two or three of the plots studied, very generally display a variation of the leaf parameters drawing the same conclusion and disclosing, in that respect, the specific adaptation ability to the environment.