Russian Federation
Sankt-Peterburg, St. Petersburg, Russian Federation
Quantitative data on the influence of spruce, pine and birch trees on the undergrowth of spruce trees growing under the canopy of stands are presented. The object of the study is the spruce forests of the acidic forest type. The condition of the spruce undergrowth, its height and age were assessed within a radius of up to 6 m from the tree trunk. It was found that spruce undergrowth grows most successfully under birch crowns - the average height of the undergrowth is greater than that of the undergrowth under the crowns of spruce, and the average age is less. It is shown that in a radius of about 1 m from the trunk, viable undergrowth under the crowns of spruce trees is represented by single individuals, and the proportion of dry undergrowth is maximal. The direct influence of the distance between the tree and the teenager on the viability of the younger generation of spruce is noted.
Leningrad region, sour spruce forest, stand, undergrowth, competition
1. Belyaeva, N.V., Gryaz'kin A.V., Kovalev N.V. Dinamika struktury nizhnih yarusov rastitel'nosti v el'nikah kislichnyh pod vliyaniem rubok uhoda // Vestnik Saratovskogo gosagrouniversiteta im. N.I. Vavilova. 2011. № 12. – S. 8-13.
2. Belyaeva N.V., Gryaz'kin A.V., Nguen Thi Thu Ha Vidovoe raznoobrazie zhivogo napochvennogo pokrova i podleska na parcellyarnom urovne // Nauchnoe obozrenie. 2013. № 5. – S. 13-19.
3. Belyaeva N.V., Gryaz'kin A.V., Kovaleva O.A. Svyaz' parcellyarnoy struktury fitocenoza s harakteristikami podrosta eli // Vestnik Moskovskogo gosudarstvennogo universiteta lesa – Lesnoy vestnik. – M.: MGUL. 2014; № 4. – S. 22-28.
4. Gryaz'kin, A.V. Patent № 2084129. Rossiyskaya Federaciya, MKI S 6 A 01 G 23/00. Sposob ucheta podrosta / A.V. Gryaz'kin. – № 94022328/13; Zayav. 10.06.94; Opub. 20.07.97, Byul. № 20.
5. Gryaz'kin A.V. Strukturnaya organizaciya fitocenozov yuzhnoy taygi (na primere el'nikov zelenomoshnoy gruppy tipov lesa). SPb.: SPbGLTA, 1999. – 136 s.
6. Gutal', M.M. Zhiznesposobnost' i struktura podrosta eli pod pologom drevostoev i na vyrubkah: avtoref. dis. k. biol. nauk: 06.03.02 / Marko Milivoevich Gutal'. – SPb., 2014. – 18 s.
7. Ipatov V.S., Tarhova T.N. Kolichestvennyy analiz cenoticheskih effektov v razmeschenii derev'ev po territoriyam // Botanicheskiy zhurnal. 1975. № 9. – S. 1237-1249.
8. Kazi I.A., Belyaeva N.V. Analiz estestvennogo vozobnovleniya eli evropeyskoy (Picea abies l.) v preobladayuschih tipah lesa v zavisimosti ot sostava drevostoya // Aktual'nye problemy lesnogo kompleksa. 2022. № 62. – S. 43-46.
9. Mel'nikov E.S. Vliyanie kompleksnogo uhoda za lesom na razvitie nizhnih yarusov rastitel'nosti sosnovyh i elovyh fitocenozov yuzhnoy taygi / E.S. Mel'nikov, N.V. Belyaeva, L.S. Bogdanova // Izvestiya Sankt-Peterburgskoy lesotehnicheskoy akademii: Vyp.178. – SPb.: SPbGLTA, 2006. – S. 4-12.
10. Minkevich G.P., Gryaz'kin A.V., Minkevich I.I. Vozrastnye izmeneniya strukturnyh elementov el'nika v podzone yuzhnoy taygi // Lesovedenie. 2003. № 2. S. 24-31.
11. Pugachevskiy A.V. Vliyanie mozaichnosti nizhnih yarusov na rost i razmeschenie podrosta pod pologom el'nikov // Lesovodstvo, lesnye kul'tury i pochvovedenie. L.: LTA, 1983. – S. 42-48.
12. Lagercrantz U., Ryman N. Genetic structure of norway spruce (Picea abies): Concordance of morphological and allozymic variation // Evolution (USA). 1990. 44. № 1. – P. 38-53.
