Silviculture and Cinegetics Review - Societatea Progresul Silvic

FORESTRY BELTS SILVICULTURE AND CINEGETICS REVIEW XVII/30/2012
- Communication (road / railway) protection forest belts
(Mărăşeşti-Putna Seacă - Vrancea, Balta Albă–Buzău,
Lacu Sărat-Făurei-Brăila interval).
For covering a large number of species in different site
conditions (a total of 39 species of trees and shrubs), the
itinerary research were extended to 30 more different
forest belts (in Vrancea, Galaţi, Brăila, Vaslui, and
Buzău counties). Information on the behavior of the
main forest species in different types and compositions
of protective forest belts, installed in various site
conditions, have been completed and compared,
whenever necessary, with data from literature.
3. Results
The management on ecological basis of the protection
forest belts should be based on good knowledge of the
forest species and sites, knowledge and application of
the laws governing the lives of these ecosystems, the
multiple relationships between human communities and
their natural environment.
The successful installation of the protection forest belts
needs, on one hand, a careful choice of species of trees
and shrubs and their judicious grouping in mixing
formulas and schemes, and on the other hand – adopting
of techniques appropriate to the local conditions.
Action to install protection forest belts in the past had
mostly the desired effect and a multitude of the species
introduced at the time vegetate quite well compared to
the conditions of vegetation (black locust, oleaster, wild
cherry, dog rose, etc.). Research on behavior and
evolution of species have led to the conclusion that the
installation of protection forest belts should impose the
introduction of a diverse assortment of forest species,
both trees and shrubs, with a high resistance to drought
during summer, and that in the shortest time can reach
dense stand closure.
Photo 1. Soil protection forest belts, Perieni - Bârlad
Photo 2. Field protection forest belts, Focşani
Carrying out the protection function with maximum
efficiency is conditioned by their composition, structure
and placement on terrain and by the natural factors in
the analyzed region (Photo 1, 2).
The main results of research on the behavior of forest
species used in the composition of the analyzed
protection forest belts are presented below.
Greyish oak (Quercus pedunculiflora) was used as
main species in the field protection belts installed at
Bărăganu Station (Călăraşi County), in the erosion
protection forest belts at Perieni Research Station
(Vaslui County) as well as in the railways protection
forest belts (Balta Albă – Buzău County, Traian Sat –
Brăila County), in their central corridor, in intimate
mixture with field elm, Norway maple, ash, Tartarian
maple, field maple and shrubs (Photo 3, 4). Considering
the climatic conditions, it proves to be resistant to soil
and atmosphere dryness, being adapted to the moderate
dry climate of the forest steppe, but more demanding to
the edaphic conditions, vegetating well especially on
cambic and clay chernozems of the forest steppe.
It shows slow growth in the first years after planting,
which becomes more active after reaching dense state.
(7-10 years). At Perieni, in the erosion protection forest
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