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Znanstveno-stručno i staleško glasilo
Hrvatskoga šumarskoga društva
Journal of Forestry Society of Croatia
      Prvi puta izašao 1877. godine i neprekidno izlazi do današnjeg dana
   ISSN No.: 0373-1332              UDC 630* https://doi.org/10.31298/sl
upute autorima
WEB EDITION
ARHIVA ČASOPISA


HRČAK


 
REVIEWS
     
Piškorić, O. UDK 630* 902.1
ANTUN TOMIĆ, 1803-1894. - First Presedent of the Croatian Forestry Society     pdf     HR     EN 331
 
ORIGINAL SCIENTIFIC PAPERS
     
Jurković, M. UDK 630* 235.2 (egzote)
New Species of Dendroflora introduced to the Region of Croatia     pdf     HR     EN 339
 
PRELIMINARY COMMUNICATION
     
Medvedović, J. UDK 630* 18.581.5 : 111.88
Forest Climate and Phytomass of the Ground Layer in one Part of the Samobor Mountains     pdf     HR     EN 349
Summary: Microclimatic and floral research was carried out in the
mountain range of Samoborsko Gorje, the area called »Tepec«, in a forest
of the sessile-flowered oak with black hornbeam (Querco-Ostryetum carpinifoliae
Ht. 1938), and in a forest of beech with black hornbeam (Ostryo-Fagetum
sylvaticae Wraber 1968).

The measurements have shown, that, compared to the morning temperatures
in the city of Samobor, those in the sessileflowered forest were by 2.6°C
higher, and in the beech forest by 0.9°C. The midday temperatures were
lower by 1.3°C and 2.8°C resp., and the evening values were also lower by
0.9°C and 0.TC respectively. Other values of the microclimate were also
considerably different, both according to the figures and the dynamics of their
changing.

Besides the standard measurements of the microclimatic values, the temperature
of the forest tree trunks was also measured. For now it is not quite
certain what the obtained data mean, though the ones from other research
objects indicate, that the trunk temperature of vital trees rather depends on
the soil temperature, while the temperature of the air has a stronger impact
upon the less vital trees. If this discovery is confirmed with a greater number of samples, by means of the air-trunk-soil relation, it will be possible in the
future to establish the vitality of trees, i. e. the activity of the conducting system
and photosynthesis. The data from Samoborsko Gorje will then also be used.

The floral composition was investigated on the profiles; at a distance of
10 m within the profile, 1 m2-phytocenological samples were lain for determination
of the plant mass of the low-growth layer above ground. On the
profiles shown on the map, scale 1:5000 (Map 1), there were recorded and
counted 53 plant species, 27 in the beech forest. Upon 1 m2 are there are
round 45.6 plant pieces, 15.7 in the beech forest. The fresh plant mass weighed
215,82 glm in the oak forest, 45,64 glm2 in the beech forest. Dried mass
was 50.23 and 36.40 glm2 respectively; in the beech forest it was 10.40 and

7.73 glm2 resp.
The proportion of the plant species in the oak and beech forest was 2:1;
there were 2.9:1 pieces on one square metre; the proportion of the mass is

4.79:1 in fresh state, 4.83:1 in air-dried state, and 4.71:1 in the state after
being dried at 105°C. The conclusion is, that the plant mass of the crop
plants in the low-growth layer of the sessile-flowered oak several times bigger
than the mass in the beech forest. This is due to the heliophile properties of
the oak forests, and the schiophile properties of the beech forests. It was
important to establish how big these differences are. Due to the small number
of the samples (34), it is impossible to determine the mass on the hectare.
In further research this number will increase.
The results of the measurements will be used in the research on the difference
between the general climate and the forest microclimate. They will also be
applied to the research on the impact of the climate on forest vegetation and
vitality. The information on the number and mass of the crop plants may be
useful in determining the food potentials for the wild animals in particular
forest associations.
Key words: microclimate; phytomass; forest association
 
PROFESSIONAL PAPERS
     
Vojinović, M., Miočić, D. UDK 630* 151.7/8 (Dama dama)
Investigation of Fallow on the Badija Island     pdf     HR     EN 357

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