The current growth increment of pine tree stands comprising three different age classes
Streszczenie
The study presents the results of an analysis of the pine tree growth increments (height increment, dbh increment, basal area increment and volume increment) for a 5-year period. The study involved Scots pine trees of Kraft's class 1, 2 and 3 (dominant stand) in stands of different age classes (II, III, V) growing in fresh mixed coniferous (BMśw) and fresh coniferous (Bśw) forest habitats. The multivariate analysis of variance was performed to assess the statistical significance of age and dominance of trees within a stand on their increment. The dominance position was classified for each tree using Kraft's criteria. The following characteristics were also measured: dbh of the trunk in two directions (N-S and W-E), and crown projection area on the basis of the characteristic tree crown points, projected using of a crown projector, characteristic points in tree crowns (7 to 14 on average). The actual height was determined after trees were felled. The following measurements of the single tree growing space were selected and determined: crown projection area – pk (m2), crown diameter – dk (m), Seebach's growth space number – dk / d1.3 , crown projection area to basal area ratio – d2k / d21.3, crown deflection coefficient – dk /h , single tree space – ppd = pkh (m3). We assessed the strength of the relationships between tree growth parameters and tree growth space, crown length, relative crown length and slenderness. Both the age and dominance position of trees within the stand affected the growth increments. The strongest correlation among measured traits was between the 5-year volume increment and decreasing slenderness.
Kolekcje
- Artykuły / Articles [16126]
Poza zaznaczonymi wyjątkami, licencja tej pozycji opisana jest jako Creative Commons Uznanie autorstwa na tych samych warunkach 3.0 Polska
Powiązane pozycje
Wyświetlanie pozycji powiązanych tytułem, autorstwem i tematem.
-
Effects of slow-release fertilizers of Silvamix and Silvagen line on growth of a young spruce and larch forest plantation three years after application
Štofko, Peter (Instytut Badawczy Leśnictwa (Forest Research Institute), Komitet Nauk Leśnych PAN (The Committee on Forestry Sciences of the Polish Academy of Sciences), 2010)This work evaluates effects of tablet fertilizers Silvamix, Silvamix Mg and Silvagen on height and diameter growth of a young plantation of Norway spruce [Picea abies (L.) Karst.] and European larch (Larix decidua Mill.) ... -
How will climate change impact biomass increment by Norway spruce stands in Western Beskids?
Socha, Jarosław; Durło, Grzegorz (Instytutu Badawczego Leśnictwa, Komitetu Nauk Leśnych PAN, 2012)The objective of this study is to analyse the relationship between current climatic conditions and the growth of Norway spruce, and to simulate the effect of changes in temperature and precipitation resulting from increased ... -
The growth and biodiversity of spruce stands in variable climate conditions – Radziejowa case study
Grodzki, Wojciech; Ambroży, Sławomir; Gil, Wojciech (Instytut Badawczy Leśnictwa, 2013)In the experiment eight populations of Picea abies were chosen at 100 m intervals between 500 m and 1200 m altitude a.s.l.. In each population wood core samples were collected from 14–19 trees (126 cores total), and measured ...