Allometry and Post-Drought Growth Resilience of Pedunculate Oak (Quercus robur L.) Varieties

被引:9
作者
Kostic, Sasa [1 ]
Orlovic, Sasa [1 ]
Karaklic, Velisav [1 ]
Kesic, Lazar [1 ]
Zoric, Martina [1 ]
Stojanovic, Dejan B. [1 ]
机构
[1] Univ Novi Sad, Inst Lowland Forestry & Environm, Antona Cehova 13d, Novi Sad 21000, Serbia
来源
FORESTS | 2021年 / 12卷 / 07期
关键词
dendrochronology; drought; phenology; tree ring; intra-species variation; climate change adaptation; common garden experiment; early and late wood; CLIMATE-CHANGE; MATURE WOOD; HYDRAULICS; FORESTRY; JUVENILE;
D O I
10.3390/f12070930
中图分类号
S7 [林业];
学科分类号
0829 ; 0907 ;
摘要
This paper presents an analysis of the radial growth, tree dimensions, and allometry of three phenological pedunculate oak (Quercus robur L.; QURO) varieties (early (E-QURO), typical (T-QURO), and late (L-QURO)), from a common garden experiment. We focused on the resistance and resilience of each variety to drought events, which occurred in 2012 and 2017, as well as their recovery potential during juvenile and mature growth phases, with the goal of clarifying how QURO drought sensitivity is influenced by tree phenology and growth stage. Our results indicate that E-QURO is more drought resistant, while T-QURO and L-QURO exhibit greater recovery potential after a drought event. Hence, typical and late QURO varieties are better prepared to withstand climate change. We also noted differences in the physical dimensions and the allometry of the studied QURO varieties. On average, 21-year-old QURO specimens from the analyzed stand are 9.35 m tall, have a crown width (CW) of 8.05 m, and a diameter at breast height (DBH) of 23.71 cm. Although T-QURO varieties had the greatest DBH and CW, they were shorter than E- and L-QURO, which are similar in height. T-QURO is also shorter relative to DBH, while L-QURO has a wider crown relative to tree height (TH). Intra-variety variations are higher than variations among half-sib (open-pollinated) families of each variety. Moreover, the adopted regression model provided a better fit to the CW/DBH ratio than to TH/DBH and CW/TH.
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页数:17
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