Abstract
ABSTRACT: The main goal set by researchers in this article was to gather knowledge on the structure of the basic biometric features of tree-rings of two species of poplars, belonging to different sections of Aegeiros – Populus xcanadensis and Tacamahaca – Populus maximowiczii, and to define and understand the correlation between weather and annual increment. A supplementary objective of the article was to determine pointer years of species found in individual populations. Our research used the standard methodology applied in dendroclimatology. In the analysis of correlation of the tree species studied, stronger statistically significant relationships were obtained in terms of precipitation-increment compared to temperature-increment. The annual increment in the Canadian poplar was enhanced by wet autumns and winters, especially by the rainfall in Oct and Dec in the previous year, as well as in Apr of this year. The tested Maximovich's poplars tested preferred rainfall during spring going into summer, especially in June of this year. Seven specific pointer years were determined for the Canadian poplar, comprising 4 positive (1987, 2008, 2010, 2012) and 3 negative years (2000, 2011, 2014). For P. maximowiczii, 11 pointer years were determined, i.e. 5 positive years (1987, 1991, 1999, 2009, 2012) and 6 negative (1984, 2000, 2002, 2010, 2013, 2015). In the pointer years, monthly sums of atmospheric precipitation and the average monthly air temperatures differed from the multi-year period. In the process of forming the secondary growth of the wood of the studied poplar species, the predominant role was played by atmospheric precipitation.
Highlights
Studies on the impact of meteorological elements on the annual growth of trees in Poland started only in the mid-twentieth century, and as of today the majority of indigenous tree species and selected introduced species have already been analysed
The main goal set by researchers in this article was to gather knowledge on the structure of the basic biometric features of tree-rings of two species of poplars, belonging to different sections of Aegeiros – Populus xcanadensis and Tacamahaca – Populus maximowiczii, and to define and understand the correlation between weather and annual increment
Monthly sums of atmospheric precipitation and the average monthly air temperatures differed from the multi-year period
Summary
Studies on the impact of meteorological elements on the annual growth of trees in Poland started only in the mid-twentieth century, and as of today the majority of indigenous tree species and selected introduced species have already been analysed. The issues of the influence of thermal-pluvial conditions on the width of annual growth rings of coniferous forest tree species have been of great interest to researchers (Bijak, 2013). Diffuse-porous deciduous species are characterised by much greater irregularity of growth and the occurrence of growth anomalies under the influence of extreme growth conditions. They are the source of several problems in determining the age of wood (Speer, 2010). Poplar wood is classified as a diffuse-porous type, i.e., in which the vessels are distributed more or less evenly throughout the annual growth ring. The study used samples from trees that perform windbreak and landscape functions, not samples from trees from forest plantations
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
