The dynamic model of pine crops thinning
https://doi.org/10.21266/2079-4304.2022.239.6-21
Abstract
Among the variety of models of growth and productivity of forest stands, a special class of models stands out, which allow predicting the process of thinning. Their purpose is to predict the number of growing trees per unit area in the future for a given initial age and a large number of trees. Numerous studies show that the algebraic difference approach provides acceptable modeling results by predicting the number of trees at a given point in time based on current age data and considering trees. The purpose of the study is to model the thinning of forest plantations based on long-term observations on the permanent test plots with equations obtained using the algebraic difference approach. To study serious measurement data in pine stands of artificial origin on 89 permanent test plots in the Forest Experimental Station of the RSAUMTAA. According to the literary sources of sources, 11 models of thinning of forest stands, a method for obtaining an algebraic difference choice from the basic bases for using various transformations of the initial parameters. For forest cultivated pines in the best dynamic thinning model, formula (N6) based on the ADA methodology is justified. This model is polymorphic and base increase invariant, which requires the use of predictions. The model makes it possible to predict the number of trees, both for naturally formed forest stands, and with the inevitability of disposal. The application of the developed dynamic thinning model should be limited only by the conditions to which the experimental materials relate. A selective research methodology can be used to identify forms of thinning of other forest-forming species in Russia.
About the Authors
N. N. Dubenok
Forestry and Land Management at Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Russian Federation
Russian Federation
DUBENOK Nikolay N. – DSс (Agriculture), professor, academician of RAS, head of the department of Agricultural Reclamation
127434. Timiryazevskaya str. 49. Moscow
A. V. Lebedev
Forestry and Land Management at the Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Russian Federation
Russian Federation
LEBEDEV Aleksandr V. – PhD (Agriculture), Associate Professor of the department of Agricultural Reclamation
127434. Timiryazevskaya str. 49. Moscow
V. V. Kuzmichev
Forestry and Land Management at the Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Russian Federation
Russian Federation
LEBEDEV Aleksandr V. – PhD (Agriculture), Associate Professor of the department of Agricultural Reclamation
127434. Timiryazevskaya str. 49. Moscow
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Review
For citations:
Dubenok N.N., Lebedev A.V., Kuzmichev V.V. The dynamic model of pine crops thinning. Izvestia Sankt-Peterburgskoj lesotehniceskoj akademii. 2022;(239):6-21. (In Russ.) https://doi.org/10.21266/2079-4304.2022.239.6-21
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