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 200
- Downloads 0
Pruning Influence on Chemical Composition of Spruce Wood (Picea abies (L.) Karst.)
The aim of the work was to investigate the influence of pruning on wood composition in different morphological parts of the Norway spruce (Picea abies (L.) Karst.) trees, including heartwood and sapwood compared to norma...
Silvicultural Production as a Basis for Continuity of Forest Management
Currently, the principle of sustainable use of forests is a fundamental direction in the management of natural resources. Solving the problems of sustainable development of forestry in the European North involves ensurin...
Spatiotemporal Structure Features of a Pine Stand on the South Slope of the Eastern Sayan Mountains
Due to relatively long development and long life of forest-forming species most of the conclusions on stand dynamics are based on the data collected by indirect methods of comparative research and analysis of cenosis for...
Obtaining High-Quality Planting Material of Forest Berry Plants by Clonal Micropropagation for Restoration of Cutover Peatlands
The results of studies on the improvement of technology for producing highquality planting material of half-high blueberry and Arctic bramble by the method of clonal micropropagation are presented in the current paper. C...
The use of flat rafting units during the Initia Timber rafting
The prohibition of drift floating used in the initial timber rafting led to an increase in the cost of supplying timber to consumers. Nowadays, the technology for rafting operations on small and medium-sized rivers is de...