Journal
RUSSIAN JOURNAL OF ECOLOGY
Volume 52, Issue 2, Pages 136-145Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S1067413621020089
Keywords
forest ecosystems; coarse woody debris; stock; decay; age-related dynamics; standing deadwood; downed deadwood; carbon balance
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Funding
- State Assignment of the Forest Research Institute of Karelian Research Center, Russian Academy of Sciences
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The study revealed that the amount of coarse woody debris (CWD) decreases with stand age in bilberry pine forests in the southern part of the Republic of Karelia, while the stocks of wood detritus increase. Additionally, there are differences in CWD stocks in terms of components and decay level among different age groups.
Thepurpose of this study was to ascertain the stocks of coarse woody debris (CWD) in bilberry pine forests in the southern part of the Republic of Karelia (the middle taiga subzone) and evaluate age-related changes in CWD abundance, stocks, and structure and reveal patterns in their dynamics. Analysis of data from 160 sample plots has shown that the amount of CWD decreases with age: on average, from 1525 (SE +/- 12) pcs/ha in young stands to 805 (SE +/- 13) pcs/ha in premature ones and 507 (SE +/- 7) pcs/ha in overmature stands. On the contrary, the stocks of wood detritus increase from 21 (SE +/- 2.6) m(3)/ha in young stands to 32 (SE +/- 2.9) m(3)/ha in premature stands and 69 (SE +/- 6.8) m(3)/ha in overmature stands. CWD stocks differ in the composition of components: with respect to the number of trunks, standing deadwood prevails in young and middle-aged stands, with the proportion of downed deadwood gradually increasing over time; with respect to the stock, downed deadwood prevails in all age groups except middle-aged stands. The degree of CWD decay gradually increases with stand aging.
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