geographia - Studia

V. SOROCOVSCHI, W. SCHREIBER, ŞT. BILAŞCO, CS. HORVATH
20,3%
6,6%
1,6%
2087,334
9,4%
15,8%
46,2%
0-2 2,1-5 5,1-10
10,1-15 15,1-20
>20
km 2
Fig. 4. Weight (%) of the territories with
various inclination classes.
If analyzing the weight of the main
altitudinal levels throughout the region, it can
be remarked that the 401 – 450 m interval
represents 20,9 % from the total surface
(2087,3 km 2 ), followed by the 351 – 400 m
interval (18,9 %) and by the 401 – 450 one
(17,6 %). The low (under 250 m) and high
areas (over 600 m) represent less than 4,5 %
from the region’s total surface (Figure 3).
In comparison to this general situation,
many differences were identified between the
main geographic subunits. Thus, in Clujului
Hills, the major weight corresponds to the
451 – 500 m interval (23,9 %), while in
Dejului and Simişna – Surduc Hills to the
350 – 400 m interval (23,3%, respectively
21,6 %).
2. 2. Geodeclivity
Fig. 5. Map of the inclination categories in
the Southern part of the Someşan Plateau.
Inclination is one of the variables that
determine the transformation of the potential
energy into kinetic energy. The determined
values for these parameter were reclassified
taking into account the thresholds that contribute
to risk geomorphic processes triggering or
evolution. As a result, six inclination classes
were identified, the major weight belonging
to the class 5,1 - 10 0 that represents 46,2%
from the total surface. The succeeding classes
are 10,1 - 15 0 and 2,1 - 5 0 (Figure 4). The areas
with reduced inclination (under 2 0 ) are rather
extended (9,4 % from the studied territory),
while those with values over 20 0 represent
only 1,6 %.
The analysis undertaken at the level
of the three subunits points out that the best
represented inclination class is 5,1 - 10 0 in
Clujului Hills (52,4%), Dejului Hills (48,4%)
and Simişna-Surduc Hills (33%).
In Dej and Simişna-Surduc Hills, the succeeding class in that with values between
10,1 and 15 0 (21,5 %, respectively 27,7% from the total surface of the mentioned subunits).
In Clujului Hills, the following met category is 2,1 - 5 0 (19,8 % from the total surface).
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