Comparative study on oak-tree forests in the Zei-Burein Plain, Far East Russia
2007
Dyadchenko, O.S.(Far East State Agriculture Univ., Amur (Russian F.))
There were three kinds of oak woods: Corylus plain (humid) oak-groves, Lespedeza oak-groves and flood-plain oak-groves. In the article the information is given on different kinds of trees, undergrowth, underbrush, as well as the comparative estimation of forest evaluation according to the type of oak-groves. Different oak-groves, besides Mongolian oak (Quercus mongolica Fisch. ex Ledeb.) often include davurican birch (Betula davurica Pall.), flat-leaved birch (Betula platyphylla Sukacz.), Amurskaya lime-tree (Tilia amurensis Rupr.), aspen (Populus tremula L.), various types of willows (Salix). Oak-groves are single-1ayer by their form: according to the composition there exist both pure and mixed wood groups. The average diameter is 10.2 cm. The average height of the present oak-groves is 7.4 m. The average reserve on 1 hectare is low (76 cubic m), it depends on the age and plenitude of the wood groups. The most part of the trees (83.8%) is the diameter of middle size (8, 10, 12 and 14 cm). The undergrowth consists mainly of different-1eaved nut (Corylus heterophulla Ficsh. ex Trautv.), different kinds of sweetbrier (Rosa), spirei (Spiraea) and dichromatic lespedeza (Lespedeza bicolor Turcz.). The undergrowth is mainly represented by Mongolian oak (85%), aspen, berry-apple, amurskaya lime-tree (=linden), davurican birch may compose it as well.
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