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ŠUMARSKI LIST 13/2005 str. 144     <-- 144 -->        PDF

A. Durbešić, 1. Milković: AFFORESTING UNSTOCKF.D FORESTLAND ON TI Ili SOUTHERN SLOPES Šumarski list - SUPLEMENT (2005), 133-143
3. REASONS FOR AMELIORATION
There are two basic reasons for undertaking ameliorative
operations in the study area:


1.
The area is characterised by special geological features.
In combination with the indented relief, these are
responsible for the occurrence of torrents, gullies
and ditches that flow into the Muć valley and bring
material which covers the fertile soil and the roads.
According to the estimate contained in the "Complex
Amelioration Plan of Muć Municipality", damage


inflicted by these torrents was exceptionally high and
amounted to 20,000,000 dinars annually, or about 66
thousand dollars.


2.
The geological substrate of the study area enables
faster soil formation. Compared with typical karst
soils on limestone substrates, fresher soils of better
quality were developed in the area. Their amelioration
achieves better productivity than in the surrounding
areas.
4. AMELIORATION GOAL
According to the "Complex Amelioration Plan of
Muć Municipality", the immediate goal of ameliorating
degraded areas in the study site is to protect soil against
erosions. Another goal involves fodder production.


At the time of the Plan, agriculture accounted for
95% of the national income in Muć Municipality, with


the majority (57 %) realized through livestock industry.
Since there were only 11 % of arable agricultural
areas in the Municipality, the livestock fodder base was
made up only of degraded bare karst and thickets.


5. STRUCTURE OF FOREST AREAS IN I960
The structure of forest areas at the time of the
"Complex Amelioration Plan of Muć Municipality"
was determined by vectorizing the vegetation map, a
component part of the said plan, on a scale 1 : 25,000.


According to the data provided by the Split Forest
Office listed in the "Complex Amelioration Plan of Muć


Municipality", the growing stock in the study area amounted
to about 9,000 m3 (black pine), while the average
annual increment per hectare was about 0.7 m3.


6. AMELIORATION PLAN
The following amelioration and silvicultural mea
sures were envisaged by the amelioration plan:


1.
Bare karst afforestation
productive-protective 126 ha;
-
anti-erosion 77 ha;
establishing windthrow belts 36 ha;
2.
Bare karst amelioration
planting fodder shrubs 447.70 ha;
planting fodder and forest species 271.0 ha;
regenerating the grass cover and planting groups
of trees 67.40 ha;


3.
Conifer planting in thickets 51.60 ha;
4.
Controlling and limiting grazing;
5.
Application of regular silvicultural treatments in
black pine cultures (repair planting, thinning).
7. DATA ON THE ACTIVITIES ACCOMPLISHED IN THE PERIOD 1960 1993
According to the management data referring to
the past period referred to in the Management Plan
for the management unit "Borovača" (valid in the period
1994 - 2003), the following activities were undertaken
in the management unit "Borovača" in the period
1975-1993:


-
afforestation 421.50 ha;
cleaning 35.52 ha;
construction of fire lines 22.74 ha;
maintenance of fire lines 27.83 ha.
No data on earlier activities are available.


8. STRUCTURE OF FORESTED AREAS IN 1993
The observed area comprises 35 compartments and 1994 - 2003, of the total 1,293.76 ha, forested areas ac128
subcompartments of the management unit "Borocounted
for 898.06 ha (69.41 %) and bare karst acvača".
According to the management plans valid from counted for 395.70 ha (30.59 %).