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ŠUMARSKI LIST 11-12/2010 str. 32     <-- 32 -->        PDF

M. Cojzer, R. Brus: SPECIES COMPOSITION AND SUCCESSIONAL PATHWAYS ON ABANDONED ... Šumarski list br. 11–12, CXXXIV (2010), 581-591
conducted throughout Europe, most studies have examined
natural and socio-economical factors associated
with old-field succession (Walther, 1986; Baldock
et al., 1996; MacDonald et al.; 2000; Mather,
2001; Kozak,2003; Kobler etal., 2005; DLG, 2005;
Lasanta et al., 2006; Gellrich, 2007; Pueyo and
Begueria,2007; Rickebusch 2007; ). There is, however,
a lack of research on tree and shrub composition
on abandoned land and a lack of research on planned
management of successive changes of stands, which occurred
in these areas. Even rarer are studies that investigate
the hilly Sub-Pannonian district, such as Haloze.
Consequently, our research in these abandoned areas fo


cused on the species composition, which is extremely
rich in the north-eastern part of Slovenia.


Specifically, our objectives were to:


Determine how much of the Haloze area has become
overgrown in the period from 1985 to 2005,
and what the estimated area of forests will be by the
year 2015;


Study the differences in composition and density of
shrub and tree species between abandoned land and
forest;


Study the strategies of succession on the abandoned
land and compare them to the vegetation dynamics
in forest.
2 MATERIAL AND METHODS – Materijal i metode


2.1 Research area – Područje istraživanja
This research was carried out in Haloze (at 46°19´N,
15°52´E), in the north-eastern part of Slovenia.


The hilly relief of Haloze is very steep with numerous
valleys and ditches (Belec, 1961). The absolute altitudes
on the study area range from 220 to 458 m a.s.l.
The climate is Sub-Pannonian and is characterised by
hot summers, dry and sunny early autumns, and cold
winters. The annual mean air temperature is 9.7°C (Klimatografija
Slovenije, 1995), and the average tempera


ture during the vegetation period is 15.3°C. The average
annual precipitation varies from 928 up to 1.075 mm/m2
(Bračič, 1982). Geology in the region consists of
Miocene sediments, mainly covered by dystric soil on
marl and marl sandstone (Belec, 1961). The Haloze
region is on the Sub-Pannonian margin of the Predinaric
phytoclimatic territory (Košir, 1994). The study area
is dominated by beech forest sites. Neutrophilic beech
forests (Hedero-Fagetum Košir /62, 79/ 94) grow in rich


Figure 1 Locations of the research plots in the study area in north-eastern Slovenia (Slovenia Forest Service)


Slika 1. Lokacije istraživačkih ploha na području istraživanja, koje leži na sjeveroistočnom djelu Slovenije


and moist habitats, while acidophilic beech forests (Ca-regular water supply. The syntaxonomic nomenclature
staneo-Fagetum sylvaticae /Mar. & Zup. 79/ Mar. & in this study follows Robič and Accetto (1999).
Zup. 95) grow on well-drained and dry sites with an ir


2.2 Data collection – Prikupljanje podataka
Abandoned land areas were recorded in the latest was used as a basis to determine the plot site locations.
forest management plans for the Vzhodne Haloze and Plot locations were chosen on the basis of digital ort-
Rodni vrh units (ZGS 2005a, 2005b). This database hophotos (scale 1:5.000). Important criteria for choo