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ŠUMARSKI LIST 13/2005 str. 130     <-- 130 -->        PDF

PRESENTATION AT THE INTERNATIONAL SYMPOSIUM Šumarski list -SUPLEMENT (2005), 120-132


BIOLOGICAL CONTROL OF EXCAVATIONS AND DUMPS DURING
THE CONSTRUCTION OF HIGHWAYS IN CROATIA


Sanja PERIĆ, Vlado TOPIC, Željko OREŠKOVIĆ, Romana MARADIN*


SUMMARY: This paper focuses on the subject of biological control of excavations
and dumps on the Maslenica-Zadar highway section. During the
last few years, great attention has been paid to the landscape planning of
highway routes. However, their construction is closely connected to the degradation
of the ecosystems they are passing through. From the ecological
point of view, the building of highways is an extremely significant issue. In
choosing the highway location, great attention is paid to the preservation of
the environment. In spite of this, the landscape is undergoing changes, so that
its original ecological and aesthetic functions must be restored.


The exploration was conducted on two locations, Rovanjska (around 300
m south from the town of Rovanjska, and the channel Velebitski Kanal underneath
the Velebit mountain) and the town of Posedarje, close to the Split-Zagreb
highway, on its southern side. The area with surface mines and building
material dumps is of typical karst morphology. During heavier rainfalls, runoffs
and erosion processes can be seen. Close to the landfill is the Novigradsku
More bay.


This paper discusses the natural characteristics of the area explored, i.e.
the geological, hydrological, climatic and vegetative characteristics. The basic
principles of the biological cleanup are analysed. Presenting a list of forest
trees, bushes, shrubs, and climbers, which could be used in the process of
biological control, the authors analyse the planting methods in various locations.
A schematic presentation of afforestation is made for both locations.


The aim of the study is to use afforestation as an ameliorating method of
environmental protection, in order to prevent erosion and enhance the visual
value of the landscape.


Key words: biological control, highway, seedling types, planting method,
afforestation, and erosion.


INTRODUCTION


Croatian development strategy has been paying road construction should regain its ecological and aestgreat
attention to the landscape planning of highway hetic functions. Therefore, a study on the environmenroutes.
Connecting the individual regions of the countal
impacts and the project of biological amelioration
try is a major issue. However, their construction is cloof
the areas along the highway route should be enclosely
connected to the degradation of the ecosystems sed with the project documentation.
they are passing through. In choosing the motor-road


This study is the result of the research on the loca


routes, the main criteria are the minimum disturbance


tions of Rovanjska and Posedarje on the Route 1 of the


of the environment. The changed landscape by the


Maslenica-Zadar highway, along which there are dis


posal sites of building wastes. The main aim of the re


* Sanja Perić, PhD, Vlado Topic PhD,
search is the amelioration by afforestation in order to


Željko Orcšković, BSc, Romana Maradin, BSc,


improve the visual value of the landscape.


Šumarski institut Jastrebarsko