Scots pine needle surfaces on radial transects across the north boreal area of Finnish Lapland and the Kola Peninsula of Russia

age air pollution arbre forestier azufre boreal forests ceras chemical composition chemical industry chemicophysical properties cinc cire cobre composition chimique copper cuivre edad estoma fer feuille foliage forest trees hierro hojas industrie chimique iron leaves manganese manganeso minerales minerals nickel pinus sylvestris plant anatomy russian federation soil morphological features soufre stomata stomate sulphur surface layers trait morphologique du sol waxes zinc