
Growth-climate relations and the enhancement of drought signals in pedunculate oak (Quercus robur L.) tree-ring chronology in Eastern Hungary
Mátyás Árvai (1) , András Morgós (2), Zoltán Kern (3)
iForest - Biogeosciences and Forestry, Volume 11, Issue 2, Pages 267-274 (2018)
doi: https://doi.org/10.3832/ifor2348-011
Published: Mar 29, 2018 - Copyright © 2018 SISEF
Research Articles
Abstract
This paper presents an analysis of the climatic factors affecting tree-ring growth in pedunculate oak (Quercus robur L.), one of the most important species of Hungarian forests. A 221-year oak chronology was elaborated, covering the period 1789 to 2009 AD. The daily climate data for a ~110 year stretch offered a detailed insight into the climate-growth relations. The correlation function reached a maximum (r > 0.4) in the case of precipitation in May-August, providing evidence that water availability is the main factor driving the oak growth in the eastern part of the Great Hungarian Plain. Although there was no significant linear relation with temperature in the long term, moving window correlation analysis revealed that temperature response changed substantially over the course of the 20th century. While positive correlation with winter temperature was characteristic in the first decades, later the response to summer temperature strengthened remarkably, reaching r = -0.569 by the end of the analysed period (years 1978-2007). While the vulnerability of oak to drought stress is common across Europe, in southern and central Europe high summer temperatures impair tree growth. The enhanced sensitivity of pedunculate oaks to the water balance in the eastern part of the Great Hungarian Plain allows to surmise the presence of an evolving tendency towards drought risk and vulnerability in the case of these oak stands.
Keywords
Dendroclimatology, Pedunculate Oak, Tree-rings, Hungary, Drought Signal
Authors’ Info
Authors’ address
Institute for Soil Sciences and Agricultural Chemistry, Department of Soil Mapping and Environmental Informatics MTA, Budapest (Hungary)
Consart Ltd., Budapest (Hungary)
Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences MTA, Budapest (Hungary)
Corresponding author
Paper Info
Citation
Árvai M, Morgós A, Kern Z (2018). Growth-climate relations and the enhancement of drought signals in pedunculate oak (Quercus robur L.) tree-ring chronology in Eastern Hungary. iForest 11: 267-274. - doi: 10.3832/ifor2348-011
Academic Editor
Jesus Julio Camarero
Paper history
Received: Jan 05, 2017
Accepted: Jan 30, 2018
First online: Mar 29, 2018
Publication Date: Apr 30, 2018
Publication Time: 1.93 months
Copyright Information
© SISEF - The Italian Society of Silviculture and Forest Ecology 2018
Open Access
This article is distributed under the terms of the Creative Commons Attribution-Non Commercial 4.0 International (https://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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