Effects of Climate Warming on Timing of Native and Non-Native Tree Species Phenology
Effects of Climate Warming on Timing of Native and Non-Native Tree Species Phenology
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DOI：
10.3846/enviro.2014.059
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
G. Sujetovienė;Irma Šveikauskaitė
中科院分区：
文献类型：
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作者：
G. Sujetovienė;Irma Šveikauskaitė
该研究的目的是调查气候变暖对落叶树种春季（叶子展开）和秋季（叶子落下）物候的影响，并比较本地树种（Quercus robur L.）和非本地树种（Quercus rubra L.）的季节发展和生长季节变化。本研究使用了维陶塔斯·马格努斯大学（立陶宛中部）考纳斯植物园的长期物候观测数据集（1980-2013 年）。温度升高被认为是这两个物种春季物候的强大驱动力。结果发现，在调查期间，与普通橡木提前8天展开叶子相比，红橡木在9.5天的叶子展开方面有更大的响应。普通橡树的落叶延迟了 13.5 天，红橡树的落叶延迟了 1.9 天。叶子展开的提前和落叶的延迟延长了所调查树种的生长季节。本地树种对温度变化的反应比非本地树种更强，并且 Q. robur 的生长季节延长了 21.6 天，而 Q. rubra – 11.4 天。
The aim of the study was to investigate impact of climate warming on timing of deciduous tree species spring (leaf unfolding) and autumn (leaf falling) phenology and to compare seasonal development and growing season changes of native (Quercus robur L.) and non-native (Quercus rubra L.) tree species. Long-term dataset of phenological observations (1980–2013) from Kaunas Botanical Garden of Vytautas Magnus University (central Lithuania) were used for this study. Increased temperature was detected to be a strong driver of spring phenology for both species. It was detected that red oak had a greater response in leaf unfolding 9.5 days comparing with common oak which displayed advance by 8 days during the investigated period. Leaf fall was delayed for common oak by 13.5 days, for red oak – by 1.9 days. An advance of leaf unfolding and delay of leaf fall extended the growing season of investigated tree species. Native tree species responded more than non-native species in response of changes in temperature and the growing season for Q. robur extended by 21.6 days, while for Q. rubra – 11.4 days.