Issue |
E3S Web Conf.
Volume 555, 2024
Relevant Issues of Ecology and Environmental Management (RIEEM-2024)
|
|
---|---|---|
Article Number | 02012 | |
Number of page(s) | 5 | |
Section | Population Ecology and Human Ecology | |
DOI | https://doi.org/10.1051/e3sconf/202455502012 | |
Published online | 30 July 2024 |
Changes in the Effect of Tree Stand Competition on the Pinus sibirica Undergrowth during Postfire Successions in Mid-Taiga Birch Forests of the Urals
Institute Botanic Garden Ural Branch of Russian Academy of Sciences, 620144, Yekaterinburg, Russian Federation
* Corresponding author: i.n.s@bk.ru
The effect of light and root competition of the tree stand on the growth of the Pinus sibirica Du Tour undergrowth in post-fire birch forests of different ages is investigated using the example of mid-taiga forests of the Middle Urals. The studies were carried out on the basis of a microecosystem approach, using indices of light competition of the tree stand (Ilsc), root competition of the tree stand (Irsc) and integral competition of the tree stand (Irlsc). At the stage of the 13-year-old young birch stand with almost full illumination, the main factor determining the growth and development of Pinus sibirica undergrowth is root competition for soil nutrition. In the 32-year-old middle-aged birch stand, a joint, almost identical, effect of the factors of light and root competition on the growth of Pinus sibirica undergrowth is observed. In the mature 70-yearold birch stand, the main factor, influencing the growth of Pinus sibirica undergrowth, is the level of interception of photosynthetically active radiation by its canopy (light competition) with root competition is not expressed. In our opinion, this is due to the adaptive abilities and characteristics of the soil nutrition of the Pinus sibirica undergrowth and a change in the degree of soil saturation with organic compounds during the development of the post-fire birch forest.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.