The influence of climate on the radial increment of larches of different provenances on the basis of the experiment in the Carpathian Mountains in Southern Poland

Wilczyński, Sławomir Boguslaw; Kulej, Marian
November 2013
European Journal of Forest Research;Nov2013, Vol. 132 Issue 5/6, p919
Academic Journal
The study evaluated the sensitivity of larch ( Larix decidua Mill.) of 20 provenances growing in the Polish lower mountain region to different climatic elements. The provenances were grown on an experimental plot located in the Polish Carpathians. Analysis of the year-to-year tree-ring width of larch of particular provenances has been undertaken. The larch populations examined were subjected to high stresses induced by the local climatic conditions. The tested larch populations were characterised by a similar sensitivity to the various climatic elements occurring during the development of the annual ring in the current and the previous year. The most limiting element of the climate, which had the strongest influence on the variation in the radial growth of larch, is air temperature. Precipitation and sunshine played an important, but slightly less significant role. A similar influence on the changes of the tree-ring width of larches of all provenances was exerted by the solar conditions in September and pluvial conditions in November of the previous year as well as thermal, pluvial and solar conditions in March and July in addition to the thermal conditions in August of the year in which the tree ring was formed. The consequence was the strong uniformity of the incremental rhythm, which is illustrated by the standardised chronologies of tree-ring widths. However, the larches of particular provenances indicated different sensitivity to the temperature in September of the previous year and to the precipitation in August of the year of tree-ring formation. It was reflected in the short-term rhythm of the changes in the tree-ring widths.


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