The study analyzes the pyrogenic effect on the condition of pine trees in two landscapes of the Leningrad region. The polynomial regression method in the description of the process tree attrition depending on the scorch height on the trunk allowed determining the trend of the thinning process for pine trees in different vitality conditions. The post-fire attrition of trees follows different scenarios in the studied landscapes of the Luga Upland and Putilov Plateau. The correlation analysis showed that the inverse relationship between the thickness of the remaining forest ground cover and the scorch height on trunks, i.e., the intensity of the past fire, is stronger in the landscape of the Putilov Plateau than in the Luga landscape. The studied landscapes created a different environment for the emergence and spread of fires of both natural and anthropogenic origin.
In the article features are considered after forest fire regeneration processes in pine stands in the Luga and Putilov landscapes related to two forest districts of the Leningrad region. Quantitative and qualitative comparative analysis was carried out with the help of statistical methods of investigation: dispersion and rank analysis. The quantitative differences in the renewal dynamics of pine in cowberry and bilberry forest types on post-pyrogenic sites and under the parent stand in both regions of the study were determined based on the analysis of variance. The study showed a significant difference in the successful resumption of pine after a grassroots fire for the Luzhsky and Kirovsky forestry's. The use of rank analysis using the Spearman coefficient made it possible to establish differences in the qualitative characteristics of pine undergrowth and to reveal the nature of the orientation of reforestation processes after grassroots fires. The conducted research has shown that landscape conditions exert a great influence on the nature of pine renewal, on the indicators of occurrence, vital state, abundance. The indicator of rank evaluation of the qualitative characteristics of pine undergrowth allowed them to compare and identify those that are crucial for growth under certain conditions. It is concluded that the landscape and soil-hydrological growth conditions are the leading factors in the quantitative representation of the undergrowth that arose after the grassland fires, and, depending on these conditions, a pioneering growth strategy for pine as a species is manifested. The study showed that in the same forest-typological conditions, but in different landscape areas, the renewal of pine can differ in its quantitative and qualitative characteristics.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.