<abstract xmlns="http://www.w3.org/1999/xhtml">

The influence of different forest-growth conditions on the ecological and physiological parameters of <italic>Pinus pallasiana</italic> D. Don plants growing in anti-erosion planting is investigated. The experimental sites are located in the thalweg (test area 1) and on the slope of southern exposure in the lower, middle, and upper parts (test areas 2–4) of Ravine Viyskovyi (steppe zone of Ukraine). Forest-growth conditions are clay-loam soil (CL2) (mesophilic, fresh soil), СL1–2 (xeromesophilic, rather fresh), СL1 (mesoxerophilic, somewhat dry or semi-arid), and СL0–1 (xerophilic, arid) correspondently. It was shown that the growth rates of trees, the growth rate of lateral (scaffold) branches in length and thickness, needle-packing coefficient, and needle surface area of annual shoots are maximal in <italic>P. pallasianа</italic> in the thalweg in conditions of the best water supply and minimal in arid and semi-arid conditions of growth. The research revealed that the highest content of total water in the needles is characteristic of plants of fresh forest plant conditions and the smallest in arid and semi-arid areas (test areas 3 and 4), which is consistent with the forest-vegetation conditions.
Sufficient contents of potassium, calcium, and magnesium in all areas and phosphorus in three areas except the middle part of the slope were found in the needles of <italic>P. pallasianа</italic>. However, insufficient content of nitrogen was found in the needles, especially in the trees of the middle part of the slope, which, together with low water supply, could cause the most significant slowdown in the growth of <italic>P. pallasianа</italic> plants precisely on this experimental site. A correlation was established between the indices of plant growth and the content of water and nutrients.
</abstract>

The influence of different forest-growth conditions on the ecological and physiological parameters of Pinus pallasiana D. Don plants growing in anti-erosion planting is investigated. The experimental sites are located in the thalweg (test area 1) and on the slope of southern exposure in the lower, middle, and upper parts (test areas 2–4) of Ravine Viyskovyi (steppe zone of Ukraine). Forest-growth conditions are clay-loam soil (CL2) (mesophilic, fresh soil), СL1–2 (xeromesophilic, rather fresh), СL1 (mesoxerophilic, somewhat dry or semi-arid), and СL0–1 (xerophilic, arid) correspondently. It was shown that the growth rates of trees, the growth rate of lateral (scaffold) branches in length and thickness, needle-packing coefficient, and needle surface area of annual shoots are maximal in P. pallasianа in the thalweg in conditions of the best water supply and minimal in arid and semi-arid conditions of growth. The research revealed that the highest content of total water in the needles is characteristic of plants of fresh forest plant conditions and the smallest in arid and semi-arid areas (test areas 3 and 4), which is consistent with the forest-vegetation conditions.
Sufficient contents of potassium, calcium, and magnesium in all areas and phosphorus in three areas except the middle part of the slope were found in the needles of P. pallasianа. However, insufficient content of nitrogen was found in the needles, especially in the trees of the middle part of the slope, which, together with low water supply, could cause the most significant slowdown in the growth of P. pallasianа plants precisely on this experimental site. A correlation was established between the indices of plant growth and the content of water and nutrients.

Physiological Parameters of the State of <italic>Pinus Pallasiana</italic> D. Don in different Forest-Growth Conditions in Ravine Viyskovyi

Department of Garden and Park Architecture

Dnipro State Agrarian and Economic University

Department of Physiology and Introduction of Plants

Ekológia (Bratislava)

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Physiological Parameters of the State of  D. Don in different Forest-Growth Conditions in Ravine Viyskovyi

The influence of different forest-growth conditions on the ecological and physiological parameters of Pinus pallasiana D. Don plants growing in anti-erosion...

Physiological Parameters of the State of Pinus Pallasiana D. Don in different Forest-Growth Conditions in Ravine Viyskovyi

Published Online: Jul 17, 2021

Page range: 137 - 144

Received: Jul 22, 2019

Accepted: Nov 15, 2019

DOI: https://doi.org/10.2478/eko-2021-0016

Keywords
ravine, D. Don, forest-growth conditions, growth of shoots, needle, contents of nutrients

© 2021 Valentina Bessonova et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Physiological Parameters of the State of Pinus Pallasiana D. Don in different Forest-Growth Conditions in Ravine Viyskovyi

Published Online: Jul 17, 2021

Page range: 137 - 144

Received: Jul 22, 2019

Accepted: Nov 15, 2019

DOI: https://doi.org/10.2478/eko-2021-0016

Keywordsravine, D. Don, forest-growth conditions, growth of shoots, needle, contents of nutrients

© 2021 Valentina Bessonova et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
ravine, D. Don, forest-growth conditions, growth of shoots, needle, contents of nutrients