DIGITALNA ARHIVA ŠUMARSKOG LISTA
prilagođeno pretraživanje po punom tekstu



ŠUMARSKI LIST 1-2/1966 str. 79     <-- 79 -->        PDF

(1), 5072 ha in area in which the following tree species deserve a special
montion: Pinus silvestris, Picea abies, Quercus robur, Alnus glutinosa, Fraxinus
excelsior, Tilia cordata, Betula verrucosa, B. pubescens and Quercus petraea,
where it reaches its eastern limit. The populations of different tree species in
this park represent the fullest available gene pools from the region of the
Podlaskie Forests.


Surrounding the Bialowieza National Parks there are large natural forest
areas which act as a barrier isolating the park from contamination by foreign
genes, and thereby preventing the deterioration of the genetic quality of these
populations.


2. NATIONAL PARKS WHICH ARE PARTIALLY PROTECTED.
In these parks protection depends on the maintainance of original relations
within plant associations, and of the indigenous tree populations in order to
obtain a harmony between the forest and the site.


M



Fig. 1. Distribution of National Parks and nature reserves with forest stands.