Silvicultural efficiency of complex felling in drained pine forests of different ages
https://doi.org/10.21266/2079-4304.2024.248.192-205
Abstract
Experimental complex felling was carried out in pine forests of different ages on the drained upper peat bog 17 years after the construction of the canals. The oldgrowth part of the stand was completely removed, thinning was carried out in the young part. In most variants of the experiment, the increase in stock over 40 years of observation exceeds the corresponding control level. The largest increase in stock (11 m3/ha per year) was recorded in the area where the entire stand was removed simultaneously with drainage. For all experimental sites at the facility, the most important advantage, in comparison with the control variants, is the significant homogeneity of trees in terms of size and quality of trunks. At the control sites, trees of ripe and overmature age are characterized by stiffness, boughtness, inclination or bending of the trunk. To these defects was added a pronounced unevenness of the annual growth along the radius of the trunk.
About the Authors
A. P. SmirnovRussian Federation
Smirnov Alexander P. – DSc (Agricultural), Professor, Department of Forestry,
194021. Institutskiy per. 5. St. Petersburg
A. A. Smirnov
Russian Federation
Smirnov Alexey A. – PhD (Agricultural), Associate Professor of the Department of Forest Taxation, Forest Management and Geographic Information Systems,
194021. Institutskiy per. 5. St. Petersburg
References
1. Babikov B.V. Hydrological regime of drained forest swamps formed on heavy soils (on the example of the Gladkoye swamp of the Tosnensky district of the Leningrad region). Significance of swamps in the biosphere. M.: Nauka, 1980, pp. 81–95. (In Russ.)
2. Demakov Y.P. Diagnostics of stability of forest ecosystems (methodological and methodical aspects). Yoshkar-Ola, 2000. 416 p. (In Russ.)
3. Ipatiev V.A., Smolyak L.P., Blintsov I.K. Forestry on drained lands. M.: Forest Industry, 1984. 144 p. (In Russ.)
4. Leshok V.I., Popov Y.A. Methods of felling in drained swamp pine forests of the North-West. L.: Research Institute of Forestry, 1983. 42 p. (In Russ.)
5. Medvedeva V.M. Formation of forests on drained lands of the middle taiga subzone. Petrozavodsk: Karelia, 1989. 168 p. (In Russ.)
6. Medvedeva V.M., Matyushkin V.A. Results of experimental felling in plantations on drained lands. Swamp biogeocenoses and their changes as a result of anthropogenic impact. L.: Nauka, 1983, pp. 99–114. (In Russ.)
7. Piavchenko N.I. On the study of swamp biogeocenoses. Basic principles of studying swamp biogeocenoses. L., 1972, pp. 5–13. (In Russ.)
8. Pyatetsky G.E., Morozova R.M. Influence of drainage on soil fertility of raised bogs and forest productivity. Forest and soil. Krasnoyarsk, 1968, pp. 339–347. (In Russ.)
9. Pyatin G.M. On the question of the characteristics of powerful peat deposits in the forestry assessment of swamps. Drainage of forest lands. Leningrad, 1978, pp. 35–37. (In Russ.)
10. Rubtsov V.G., Knize A.A. Laying and processing of test plots in drained plantations: method. recommendations. Leningrad: Research Institute of Forestry, 1977. 44 p. (In Russ.)
11. Sennov S.N. Felling of forest care. Moscow: Forest Industry, 1977. 160 p. (In Russ.)
12. Smirnov A.P. Forest-growing potential of drained peat-bog soils and its rational use: Doc. in Agricultural Sciences. St. Petersburg, 2003. 315 p. (In Russ.)
13. Smirnov A.P. Results of experimental felling in pine forests on drained peat bogs / Forest inventory at the turn of the XXI century: state and prospects of development. Proceedings of the Conf. St. Petersburg. 2001, pp. 111. (In Russ.)
14. Smirnov A.P., Vu Van Truong, Smirnov A.A. Dynamics of recovery processes in drained pine forests of different ages passed by felling. Izvestia Sankt-Peterburgskoj Lesotehniceskoj Akademii, 2016, iss. 214, pp. 80–94. (In Russ.)
Review
For citations:
Smirnov A.P., Smirnov A.A. Silvicultural efficiency of complex felling in drained pine forests of different ages. Izvestia Sankt-Peterburgskoj lesotehniceskoj akademii. 2024;(248):192-205. (In Russ.) https://doi.org/10.21266/2079-4304.2024.248.192-205