DBPapers
DOI: 10.5593/sgem2010.15.20.S2.079

LANDSCAPE FRAGMENTATION CAUSED BY TRAFFIC IN THE CZECH REPUBLIC: EVOLUTION FROM THE YEAR 1980 AND THE PROGNOSIS TILL 2040

AUTHOR/S: P. ANDEL, L. PETRZILKA, I. GORCICOVA, H. BELKOVA
Sunday 1 August 2010 by Libadmin2010

10th International Multidisciplinary Scientific GeoConference - SGEM2010, www.sgem.org, SGEM2010 Conference Proceedings/ ISBN 10: 954-91818-1-2, June 20-26, 2010, Vol. 2, 651-656 pp

ABSTRACT

Landscape fragmentation, a process where biotopes are separated into different parts by
a creation of a barrier, is a key issue of landscape ecology nowadays. Separated
landscape patches gradually lose their potential to fulfil their original function. There is
general effort to develop universal model or set of indicators for fragmentation
measurement. In the CR we carried out research project “Integration of landscape
fragmentation issue into the decision-making processes” leading by the Ministry of by
the Ministry of Transport. Within the project, we applied the method of determination
of unfragmented areas by traffic. These areas, so called UAT polygons, are defined as
part of the landscape which simultaneously fulfils two conditions: (a) it is bounded
either by roads with a traffic intensity of more than 1000 vehicles/day, or multi-track
railways, (b) it covers an area greater or equal to 100 sq km. We extended this method
with a qualitative approach and future perspective, and introduced two model variables:
(i) effective area (sq km) which represents the area inside the polygon which can be
used by the given species, (ii) potential barrier (km) used for the quantification of the
future risk from traffic, comprises an assessment both of the length and permeability of
barriers. From the nature conservation viewpoint is fundamental to gain time complex
data series and to focus on the future prognosis. Based on GIS, CORINE database and
data of traffic volume we elaborated and described the development of landscape
fragmentation in the whole CR between the years 1980 and 2005 in five-year intervals
with the prognosis till the year 2040. The results show that the coverage of
unfragmented areas declined from 83,4% in 1980 to 64,9% in 2005, with the prognosis
of 53,1% in 2040. The structure of polygons is also changing; smaller polygons
gradually prevail with the time. The issue of landscape fragmentation is necessary to
incorporate in all decision-making processes and landscape planning. This methodology
and presented results represent useful background material.

Keywords: landscape fragmentation, UAT polygons, Czech Republic, traffic