Cedar forests green with cedar dwarf
These cedar forests are confined to relatively well-moistened positions on the slopes of a straight or slightly concave profile, with a rather thick layer of sandy loamy-rocky eluvio-deluvium or boulder light loam. The following associations belong to this group.
Cedar cedar-green-moss with cedar dwarf. In Sosnovka Bay, this association is widespread on the northwestern steep slopes of Baikal facing the spurs surrounding it in the upper part of the subbelt subject to temperature inversion. It occupies a strip between rare-standing larch forests with cedar dwarf below and cedar lingonberry-green spurs without a tier of cedar dwarf at the top of the same slope. Within this strip, when moving up the slope, the forest stand thickens and improves in growth, a single pine tree appears in it, and the cedar dwarf tier, almost continuous below, is gradually thinned out. Above the slope, outside the inversion band, at an altitude of more than 150 m, at the same positions in the relief, cedar forests-lingonberries and mixed reticone-coniferous-dark coniferous forests of III – IV boniteta without a tier of cedar dwarf trees or only with rare stunted specimens are developed. Below is a description of the plots of this association in its two highest variants, the lower — rare-standing and the upper — well-closed cedar forests with a dense layer of cedar dwarf trees.
Rare-resistant Cedar-Lingonberry-Moss with cedar dwarf. Uch. 22, 2IIX 1965. The radical north-western slope to the Sosnovka Bay, at an altitude of about 100 m above Lake Baikal. The flattened edge of the slope between the Snezhniy spring and the dry north hollow adjacent to the north. Flat northwestern slope with a steepness of 18–20 °
Forest stand V boniteta, oppressed, stunted. Composition 8K2L-, bonitet IV — V. Still, although weaker, the effect of temperature inversion affects the trees. Crowns begin on the lower 1/4 or 1/3 of the trunk, dry branches descend to the butt. The growth of cedar is single, but well growing, its height is 8-10 m. Larch grows here slightly better, its height is up to 22 m, its prevailing diameter is about 30 cm. The crowns are attached to the upper quarter of the trunk. In small gaps there are stunted, stunted larches reaching a height of about 12 m. The pine is very oppressed, 15–10 m high. There is no adolescent larch and pine. The height of the birch is about 15 m. Single young good birch trees are 8 meters high. There are decayed birch decks. The tree stand undoubtedly grew after a very old fire and at first had a more mixed composition.
The undergrowth consists of old, lush, loose, bushy bushes of Pinus pumila. Closeness 0.8, height 3 m. Bushes of Alnus fruticosa 5 m high and oppressed specimens of Rosa acicularis 35 cm high are found singly. Shrub cover consists of only lingonberry Vaccinium vitis-idaea - sor. 2, covering 0.6-0.7 surface. The moss carpet is almost continuous, covering 0.9, consists of Pleurozium schreberi - soc. - sor. 3 and Hylocomium splendens - sol. gr. Mushrooms are found singly: oily, raincoats, etc.
Above this site, on the same slope, forest growth improves markedly. Outside the inversion band, Siberian pine lingonberry IV bonitet is described with an admixture of larch, pine and birch, with a rare and oppressed cedar dwarf elfin, which does not form a longline. Thus, cedar forests, lingonberries on root slopes form a high-altitude series from a rare cedar dwarf with a dense layer to a well-closed forest mixed with light coniferous species, with or without a rare and stunted cedar dwarf. For this series of associations, participation in fir stands is not characteristic, and its undergrowth is usually absent or single here.
Cedar forests of sedge-lingonberry-green-moss with cedar dwarf. The association occupies more favorable locations with close to optimal hydration. We observed it in Sosnovka Bay in the transitional band between the optimal sub-belt and the lower part of the forest belt, subject to temperature inversion, away from Lake Baikal, at an altitude of more than 100 m above its level. South of Shumilikhi, where cedar forests descend along the mountain slopes directly to Lake Baikal, the same cedar forests are found in small plots on the plumes at the foot of the root slopes of the lower part of the forest belt. This association is close to the mixed pine-foliage-larch-cedar forests with cedar dwarf described in the transitional zone. A brief description of the sites of this association is given below.
Uch. 55, 15 / IX 1961. The periphery of Sosnovka Bay on the verge between the root slope of the paddy of the Snezhniy key and the upper part of the Shumilikha outflow cone. The height above Baikal is more than 100 m. The slope of the northern ramps with a steepness of 8-12 °, folded by boulder loam, facing the Sosnovka Bay.
Ripe forest stand, IV bonitet. The crown density is 0.7-0.8. The composition of the dominant canopy 7KZP + B; the second younger - UP + K + B. The height of the cedar and fir of the dominant canopy is 22–23 m, the birch is mostly in the subordinate canopy, and the height is 17–20 m. casino Malaysia