DIGITALNA ARHIVA ŠUMARSKOG LISTA
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|ŠUMARSKI LIST 11-12/1994 str. 30 <-- 30 --> PDF|
J. Medvedović: ŠUMSKA KLIMA I FITOMASA PRIZEMNOG SLOJA SUMA NA DIJELU SAMOBORSKOG GORJA Šumarski list br. 11-12, CXVIII (1994). 349-356
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
Key words: microclimate, phytomass, forest association