THE ASSESSMENT OF TREES CONDITION AND INDICATORS OF SOIL FERTILITY IN PINE GROVES OF THE VOLOGDA REGION
Abstract and keywords
Abstract (English):
Cedar groves in settlements and near them are mostly subject to recreational loadings: tourists' recreation, collecting cedar cones. The research objective is the assessment of the condition of trees and soil fertility in cedar groves of the Volog-da Region. By means of methods of valuation the taxation characteristic of plantings of cedars, the assessment of trees on classes of sanitary state, agrochemical analysis of soil samples was made. Both park plantings of Siberian cedar and plantings near the settlements in studied objects differ in op-timum indicators of growth. Good illumination of croner reached by rare planting promoted their de-velopment and increase in growth of the trunk in diameter. At distribution of trees in classes of sani-tary state their greatest parts were referred to the second class (43 and 49 %). Wood plantings of I, II and III classes of sanitary state are quite viable. Average size of sanitary assessment for Chagrin-sky cedar grove makes 2.0. For Gryazovetsky ce-dar grove this indicator is slightly higher and makes 2.3. Agrochemical analysis showed that soils had average security with basic elements of mineral food (phosphorus, potassium, calcium and magne-sium), the hydrogen indicator made 5.2 in Chagrin-sky cedar grove and 5.1 in Gryazovetskaya, the extent of saturation was estimated on average by organic substance as 4. 87 %. In studied cedar groves carrying out the following actions is recom-mended: selective sanitary cabins with addition of forest cultures instead of lost trees, cleaning of clut-ter, forest shelter actions on studied objects. The need of performance of sanitary and improving ac-tions was defined on the basis of carried-out as-sessment of sanitary state.

Keywords:
Siberian pine cedar, trees‟ sanitary condition, soil fertility
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References

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