Features of natural regeneration of pine under the canopy of dry pine forests in Buryatia
https://doi.org/10.21266/2079-4304.2024.248.123-137
Abstract
The object of the study is lingonberry and lichen pine forests growing on different relief elements. Accounting was carried out on circular accounting sites of 10 m2. The biometric characteristics of the undergrowth were determined using methods generally accepted in forestry and taxation. It is shown that under the canopy of pine forests growing on dry, poor soils in the conditions of the Republic of Buryatia, the natural renewal of pine is unsatisfactory. The main part of the undergrowth grows in the «windows». Under the canopy of forest stands, there is mainly non-viable undergrowth, whose age is 3-8 years, the average height is less than 40 cm. The dependence of the average growth value, the number of branches in the whorl, the age of the needles on the age of the pine undergrowth and its height is also established. The total number of pine undergrowth does not exceed 1000 ind./ha. The share of unviable undergrowth reaches 42%. Undergrowth of the «dry» category is about 3%. The peculiarity of the natural renewal of pine under the canopy of forest stands on dry, poor soils is manifested in the fact that most of the undergrowth is found in windows. Under the canopy of forest stands, undergrowth is much less than in the «windows» and almost completely belongs to the «non-viable» category. The total amount of dry and non-viable pine undergrowth is almost 50% of the total number. The purpose of the study is to identify the features of the natural renewal of pine under the canopy of forest stands growing on poor dry soils and to establish the dependence of the main characteristics on the height and age of pine undergrowth.
About the Authors
B. B. Klimov
St.Petersburg State Forestry Technical University
Russian Federation
Russian Federation
Klimov Boris B. – PhD student of the Department of Forestry,
194024. Institutsky per. 5. St. Petersburg
A. V. Gryazkin
St.Petersburg State Forestry Technical University
Russian Federation
Russian Federation
Gryazkin Anatoly V. – DSc (Biological), Professor of the Department of Forestry,
194024. Institutsky per. 5. St. Petersburg
O. I. Gavrilova
Petrozavodsk State University
Russian Federation
Russian Federation
Gavrilova Ol'ga I. – DSc (Agriculture), Professor of the Department of Technology and Organization of the Forestry Complex,
185960. Lenin av. 33. Petrozavodsk
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Review
For citations:
Klimov B.B., Gryazkin A.V., Gavrilova O.I. Features of natural regeneration of pine under the canopy of dry pine forests in Buryatia. Izvestia Sankt-Peterburgskoj lesotehniceskoj akademii. 2024;(248):123-137. (In Russ.) https://doi.org/10.21266/2079-4304.2024.248.123-137
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