DIGITALNA ARHIVA ŠUMARSKOG LISTA
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M. Cojzer, R. Brus: SPECIES COMPOSITION AND SUCCESSIONAL PATHWAYS ON ABANDONED ... Šumarski list br. 11–12, CXXXIV (2010), 581-591 Table 6 Mean values of the density of individuals per ha between treatments. Homogeneous groups are marked with small letters (Duncan test at p<0.05). Tablica 6. Prosječne vrijednosti gustoće jedinki na ha, posebno po tretmanima. Homogene grupe (skupine) su označene malim slovima (Duncanov test kod p<0.05) Treatments Tretmani Count Broj ploha All species Sve vrste Tree species Vrste drveća Shrub species Vrste grmlja Average number per plot Prosječan broj jedinki (ha-1) Homogeneous groups Homogene grupe Average number of individuals Prosječan broj jedinki (ha-1) Homogeneous groups Homogene grupe Average number of individuals Prosječan broj jedinki (ha-1) Homogeneous groups Homogene grupe AB C D E F 5 15 17 5 5 5 16277.0 19612.0 20234.1 33087.0 21842.0 16790.0 a a a a a a 1189.0 8765.3 14336.5 32070.0 18692.0 14890.0 a b b c bc b 15088.0 10864.7 5897.6 1017.0 3150.0 1900.0 c bc ab a a a The density of all species individuals on abandoned land increased with developmental phase aging (Fig. 4). This pattern is reversed in forest, where the density of all species individuals decreased with developmental phase aging (Fig. 4). The findings for the density of tree species individuals were similar. On abandoned land the density of shrub species individuals decreased with developmental phase aging. There was no significant difference shrub species - vrsta grmlja tree species - vrsta drveća Figure 4 The density of tree and shrub species individuals per ha between treatments in the density of shrub species indi (A - abandoned land in young growth phase, B - abandoned land in thicket phase, viduals in forest. C - abandoned land in pole stand phase, D - forest in young growth phase, E - forest in thicket phase, F - forest in pole stand phase). Slika 4. Gustoća jedinki vrsta drveća i grmlja po hektaru, posebno po tretmanima ( A - zemljište u zarastanju u razvojom stadiju mladika, B - zemljište u zarastanju u razvojom stadiju koljika, C - zemljište u zarastanju u razvojom stadiju letvika, D - šuma u razvojom stadiju mladika, E - šuma u fazi koljika, F - šuma u razvojnom stadiju letvika) 3.4 Overgrowing strategies on abandoned land and vegetation process in forest – Strategija zarastanja na zemljištima u zarastanju te vegetacijski procesi u šumi Treatments A, B and C deal with developmental “Cornus sanguinea” stage in this phase was replaced phases on abandoned land. In treatment A there was the by the “Carpinus betulus” stage. most shrub species (Fig. 4). Thus, in young growth The share of the most numerous species, Cornus Cornus sanguinea was dominant (Tab. 4). Among tree sanguinea, strongly decreased in treatment A with de- species Acer campestre and Betula pendula were the velopmental phase aging, whilst the share of Carpinus most abundant. This is the first initial stage of shrub ve-betulus increased. Shrub species were replaced by tree getation, which can be defined as a »Cornus species in later developmental phases. sanguinea« stage. Shrub species still prevailed in treat-Treatments D, E and F denote initial developmental ment B, but their share decreased in favour of tree spe-phases in forest. In treatment D there was an abundance cies. Cornus sanguinea thus still prevailed in the of tree species (Fig. 4). Among the young growth pre- thicket stage, and was followed by Carpinus betulus. vailed Fagus sylvatica. Cornus sanguinea was the do- We can still talk about the »Cornus sanguinea« stage. minant shrub species (Tab. 4). In treatment E tree In treatment C tree species already prevailed over species still prevailed; their share was the least in this shrub species. Carpinus betulus was abundant, while phase, but the share of shrub species increased a bit. In Cornus sanguinea was abundant in the shrub layer. The the thicket phase Fagus sylvatica still prevailed, alt |