Кедровые леса средней тайги томской области и их лесоводственная характеристика

The object of research is the cedar forests of the Verchneketskiy forestry of the Tomsk region. In the subzone of the middle taiga within the boundaries of the Tomsk region cedar forests occupy 1,9 million hectares. it is Established that cedar forests occupy 29,9 % of the forested area. The common...

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Bibliographic Details
Main Authors: Дебков, Н. М., Паневин, В. С.
Format: Article in Journal/Newspaper
Language:Russian
Published: УГЛТУ 2018
Subjects:
Online Access:https://elar.usfeu.ru/handle/123456789/7994
Description
Summary:The object of research is the cedar forests of the Verchneketskiy forestry of the Tomsk region. In the subzone of the middle taiga within the boundaries of the Tomsk region cedar forests occupy 1,9 million hectares. it is Established that cedar forests occupy 29,9 % of the forested area. The common stock of coniferous wood in the cedar forests are concentrated 54 %. The area of young growth is insignifi cant and makes only 6,9 %. Averag plantings also is 6,3 %, suitable be 20,2 %, Mature and overmature – 70,9 per cent of the total forest area. Forest productivity is low. The middle class of bonitet pine forests IV.1. The lowest productivity is characterized by pine forests, more than half of which are represented by V–VB classes of quality. A characteristic feature of cedar forests of the middle taiga subzone is their low relative completeness. The share of plantations with a fullness of 0,3–0,5 accounts for 65,4 %. High-density plantations are rare, only 2 % of them have a fullness of 0,8 and above. The distribution by composition, productivity, typological representation is quite uniform. Thus, the average taxation indicators of plantations of the Western part of the subzone (the left Bank of the Ob river) and the Eastern part (the right Bank of the Ob river) are very similar. The composition of the predominant species, respectively 3Cedar4Pinus2Birch1Aspen and 3Cedar5Pinus2Birch. The middle class is site class IV.2 and IV.0. The average completeness of 0,58 and 0,61. Similar forests and typological structure. It is established that more than a third of plantings in the area of researches are presented by the boggy woods. Especially a lot of them in the SOS-a new formation where only forests on peatlands is 47,4 % of the area. Deciduous forest is less boggy, their performance above. Almost all of them are derived types that have arisen on the site of the dead from the fi res of dark coniferous forests. Fires are still the main regulator of the structure of middle-taiga forests, causing great damage to them. ...