Silviculture and Cinegetics Review - Societatea Progresul Silvic

FORESTRY BELTS SILVICULTURE AND CINEGETICS REVIEW XVII/30/2012
Apart of the land boundaries, several necessary details
for forest shelterbelts settlement of these plans are
used, such as:
-watercourses, canals, ponds, polders, springs,
(existent) retention basins;
-terrain differentiation by land use (agriculture,
forests, forest shelterbelts, tree clumps, orchards and
.
vineyards) and highlighting cadastral units (plots,
parcels);
-built settlements areas and various social and
economical objectives;
-railways, highways, communal roads, plot roads,
aerial lines (telephone, electric)
Fig. 1. Different information layers overlapped in
the GIS analysis framework
After obtaining the topographic plan, it is compulsory
a preliminary land recognition in order to collect the
general data, taking into consideration the followings:
- soil data (identifying the type and the general
characteristics);
- data regarding the forms, degrees and extension
erosion process on the corresponding territory;
- data regarding the trees and shrubs forest species
existent in the region (insisting on the vegetation
status and the productivity achieved by the forest tree
species);
- data regarding the local possibilities to produce
necessary seedlings for forest shelterbelts
establishment;
- data regarding the existent hydrological network and
the waterground availability.
3. Results and discussion
3.1. Recommended afforestation solutions under
the soil and ecological site conditions reflected by
the existent information
The distribution and the combination method of the
ecological site factors within the Danube Plain and
Dobrogea, determine also the diversity of
afforestation solutions suitable for establishing the
forest shelterbelts.
To implement the technical solutions for shelterbelts
achievement, it is necessary a general framing of
ecological site conditions for the analyzed area,
starting with the assumption that the soil type is a
good enough indicator to frame it in the bioclimatic
zonality. At this stage an important phase is to
establish the dominant soil types at the level of all the
administrative-territorial units (based on the
information provided by the pedological map scale
1:200000, carried out by the Research Institute for
Pedology and Agrochemistry).
The afforestation solutions are determined on soil
types and soil types groups ecologically similar,
linking the ecological requirements of species with
the ecological soils characteristics, but taking also into
consideration the fact that by their location in the open
field and by their reduced dimensions the forest
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