Shkurenkov E., Gerasimova T., Krylov I., Danilov D. Pine plantations established on post-agrogenic soils in conditions of gatchina district of leningrad region // Resources and Technology. 2025. №4, Vol. 22. P. 1‒14.

Pine plantations established on post-agrogenic soils in conditions of gatchina district of leningrad region

Shkurenkov
Evgeny Dmitrievich

St. Petersburg State Forest Technical University named after S.M. Kirov, shkurenkov@spbftu.ru

Gerasimova
Tatiana Alekseevna

St. Petersburg State Forest Technical University named after S.M. Kirov, gerasimova@spbftu.ru

Krylov
Ivan Alekseevich

St. Petersburg State Forest Technical University named after S.M. Kirov, diesdthebest@yandex.ru

Danilov
Dmitry Alexandrovich

St. Petersburg State Forest Technical University named after S.M. Kirov, stown200@mail.ru

Key words:
postagrogenic lands; biometric indices; pine plantations

Summary: The article deals with the growth and development of plantations created on lands that have been used for agricultural purposes. A large number of lands withdrawn from agricultural use are not restored and therefore the land is overgrown with weeds. Thus, the study of the creation of plantations with the most preferred species for forestry may contribute to the transfer from the category of agricultural land to the category of forest land. The object of the study was the plantations created on the plot of old arable land under the management of the Research Institute «Belogorka». At the experimental site in 2015, pine seedlings were planted in six rows. In 2023, measurements of circumferences and heights of the undergrowth, as well as of annual increment were made. The survey revealed that of the 150 trees planted, 11.5 % were fallen or undersized at the time of the survey. This percentage of undersized trees is acceptable. In each row, there was a tendency of growth depression, which is associated with the adaptation of pine seedlings after transplanting. When constructing the trend line, the coefficient of determination in all rows showed values greater than 0.9, which indicates good coincidence of the calculated straight line with the initial data. The study of the ratio of trees heights to diameters showed a tendency of increasing values of biometric indices from row 1 to row 6. It was suggested that this was caused by terrain lowering, but variance analysis revealed that group averages differed not significantly, and thus, the slope conditions did not significantly affect the differences in diameters and heights of pine trees. In terms of their characteristics, by now, the pine plantations are developing quite successfully. Further study of the growth progress of plantations established on old arable lands will allow the authors to understand the profitability of establishing plantations of economically valuable tree species on such lands.

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Pine plantations established on post-agrogenic soils in conditions of gatchina district of leningrad region