Ecology and regeneration of forest communities on the alluvial fan ...

-Results-
4.3 Ordination results
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7
6
8
1
2
4
3
5
2
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1
4
8
3
Fig. 4.22 Ordination diagram (DCA) <strong>of</strong> 71 sample plots generated on the basis <strong>of</strong> presence <strong>and</strong>
abundance <strong>of</strong> 85 plant species. Eight plant <strong>communities</strong> were discriminated. Vectors indicate gradients in
site parameters. Equisetum telmateia-Alnus barbata com. (1), Fraxinus excelsior-Pterocarya pterocarpa
com. (2), Swida sanguinea-Populus alba com. (3), Oplismenus undulatifolius-Acer velutinum com. (4),
Quercus robur-Carpinus betulus com. (5), Quercus iberica-Carpinus orientalis com. (6), Scleropoa
rigida-Populus nigra com. (7), Echinochloa crusgalli-Populus alba com. (8)
Table 4.3 Correlation between selected environmental parameters <strong>and</strong> DCA axes
total inertia 7,92
Axis 1 Axis 2 Axis 3
length <strong>of</strong> gradient 4,27 3,36 2,44
eigenvalue 0,92 0,60 0,35
correlation coefficient r r r
altitude 0,695 0,137 0,233
moisture -0,471 -0,082 0,192
carbonate -0,382 -0,357 -0,007
skeleton 0,463 -0,157 0,480
clay -0,606 0,179 -0,322
silt -0,241 0,201 -0,324
s<strong>and</strong> 0,559 -0,242 0,413
-<strong>Ecology</strong> <strong>and</strong> <strong>regeneration</strong> <strong>of</strong> <strong>forest</strong> <strong>communities</strong> on the alluvial fan near Qakh (Northwestern Azerbaijan)-
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