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ŠUMARSKI LIST 13/2005 str. 142     <-- 142 -->        PDF

PRESENTATION A´l´THh INTERNATIONAL SYMPOSIUM Šumarski list - SUPLEMENT (2005). 133-143


AFFORESTING UNSTOCKED FORESTLAND ON THE SOUTHERN
SLOPES OF SVILAJA - MUĆ MOUNTAIN
FOR ANTI-EROSIVE PURPOSES


Anamarija DURBEŠIĆ, Ivica MILKOVIĆ*


1. INTRODUCTION
Mount Svilaja is situated in the south of the Republic
of Croatia. With a length of 30 km, it stretches
northwest from Sinjsko Polje to Petrovo Polje near Drniš.
It takes up the Dinaric direction from the northwest
to the southeast. The highest peak of Svilaja reaches
1,508 m above the sea. Of all the mountains in the Dinaric
range, Svilaja is the most abundantly covered
with vegetation.


The sparse vegetation, the developed relief and the
geological structure prone to erosion are highly conducive
to the occurrence of a large number of torrential
streams, gullies and ditches in some parts of this area.
Vast quantities of water and sediments brought by torrents
have inflicted large-scale damage on agricultural
land and communication routes.


Interdisciplinary research was conducted in the area
for the purpose of preventing further decline. It resulted
in an amelioration plan of Muć Municipality in
1960. The amelioration plan of Muć Municipality
comprises five amelioration facilities.


This paper presents the results achieved in the third
amelioration facility, which entails the larger part of
the current management unit "Borovača". This amelioration
facility, covering an area of 2,026 ha, is situated
next to the village of Muć north of the main road. GIS
technology was used to compare the situation in 1960
with the present situation.


2. PRINCIPAL FEATURES OF THE STUDY AREA
2.1 Position and size
The third amelioration facility is part of a comprelatitude
and mostly covers the southern slopes of Svihensive
ameliorative programme for the Municipality laja in the belt between 414 and 855 m above the sea
of Muć. The area of this municipality is divided into fi(
Figure 1).
ve ameliorative facilities.


It stretches from 16°23´40" to 16°34´07" eastern
longitude and from 43°42´55" to 43°41´22" northern


2.2 Geological and pedological features
The study area is located in the tectonic unit of Svilaja.
The Udolje-Ramljane-Muć fault divides the Svilaja
tectonic unit from the Promina-Moseć-Muć tectonic
unit. This area is composed of the layers in the chronostratigraphic
range of Lower Triassic - Upper Malm.


The layers of the lower part of Lower Triassic -
Scythian (saiserbeds) are composed of red sandstones,
siltites and greyish carbonates, while the layers of
Upper Scythian (Camplier beds) are made up of diffe-


Anamarija Durbešić, MSc, Ivica Milković, MSc,
Hrvatske šume d.o.o. Farkaša Vukotinovića 2
10 000 Zagreb


rent types of limestone with particles of intra-basin terrigenic
detritus and marl intercalation (Ivankovic et
ah, 1978).


The so-called "Otarnik sediments" were deposited
in this area at the beginning of Middle Triassic. Their
name originates in a hillock of the same name, where
they are the most beautifully developed. These are carbonate
breccias with reddish and yellowish cement,
which indicates a shorter continental phase (emersion)
(Raić etal, 1984).


They are followed by Anisian limestone deposits,
which were transformed into dolomites during the late