Evaluation of Thinning Efficiency in Pineries of Dry Forest Sites of the Kazakh Uplands
Journal Title: Lesnoy Zhurnal (Russian Forestry Journal) - Year 2021, Vol 10, Issue 2
Abstract
According to the current Forest Code of the Republic of Kazakhstan, in the forest plantations of specially protected natural areas, the main forestry measures aimed at the conservation and enhancement of the protective functions of forests are intermediate felling, that is, thinning. Pinus sylvestris L. is one of the main forest-forming species in Kazakhstan. Increasing the stability of forest plantations and the possibility of forming recreationally attractive landscapes through thinning is an urgent problem for plantations growing in arid conditions. The research purpose is to analyze the effectiveness of thinning of high intensity in dry pine forests of the Kazakh Uplands for a 70-year period, using dendrochronological methods. It was proved that in dense pine forests growing in dry conditions, there is an increase in radial growth in each subsequent 10-year period after thinning. It was found with statistical certainty that the greatest response to changes caused by thinning of high intensity was observed between 1949 and 1960. Analysis of indexed tree-ring chronologies using regional curves (indexed average tree-ring chronologies of pine) using a cubic spline function revealed differences in pine radial growth indices from the site where thinning of high intensity were carried out and from the control site (time periods: 1947–1955, 1961–1970, 1981–1990, and 1995–2015). The data obtained show a positive effect of thinning of high intensity on the radial growth of trees in the considered pine forests. In dense pine forests of dry growing conditions of the Kazakh Uplands it is recommended to make 1 or 2 cuttings with thinning intensity of 25–35 % at the age of 20–25 and 40–50, respectively, with subsequent increment thinning. For citation: Dancheva A.V., Pankratov V.K. Evaluation of Thinning Efficiency in Pineries of Dry Forest Sites of the Kazakh Uplands. Lesnoy Zhurnal [Russian Forestry Journal], 2021, no. 2, pp. 45–55. DOI: 10.17238/0536-1036-2021-2-45-55
Authors and Affiliations
A. V. Dancheva, V. K. Pankratov
Keywords
Related Articles
- EP ID EP693549
- DOI https://doi.org/10.37482/0536-1036-2021-2-45-55
- Views 178
- Downloads 0
Functional Characteristics of Siberian Spruce Undergrowth Needles under the Canopy and in the Cutting of Bilberry Spruce Forest in the Middle Taiga Subzone
Currently, the coniferous undergrowth preservation in the cuttings of the boreal zone is of great importance for the accelerated restoration of coniferous forests. When assessing the natural regeneration of forests in cl...
features of the Structure of Pine Stands on Bolshoy Solovetsky Island
The studies were carried out on Bolshoy Solovetsky Island in the White Sea. The research purpose is to identify the features of pine forests in the most frequent growing conditions on the island. For this purpose, 34 sam...
Recovery and Purification of Gas Emissions from Pulp Production
For pulp production, large-scale enterprises have been built which, while in operation, are subject to new requirements, different from the design ones, for economic efficiency, labour safety, as well as impact on the lo...
Reintroduction of Curly Birch
The paper offers a systematic overview of the results of research regarding reintroduction of curly (Karelian) birch Betula pendula Roth var. carelica (Mercklin) Hämet-Ahti published by Russian and foreign authors over t...
Digital Scanning of Woody Plant Growth and Development
The paper presents a photometric device and a procedure for quickly recording the characteristics of organs or parts of woody plants during their growth in the field conditions with maximum detail and accuracy. The proce...