Crown status of holm oak (Quercus ilex L.) trees as related to phenology and environmental stress
Crown status of holm oak (Quercus ilex L.) trees as related to phenology and environmental stress
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圣栎 (Quercus ilex L.) 树冠状况与物候和环境胁迫相关
DOI：
10.1007/bf00477156
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
C. Tani
中科院分区：
文献类型：
--
作者：
F. Bussotti;M. Ferretti;A. Cozzi;P. Grossoni;A. Bottacci;C. Tani
为了研究地中海常绿阔叶植物空气污染与气候条件之间可能的相互作用，自1987年以来，我们在一个永久样地监测了黑栎树冠密度的年际变化。树冠密度的变化与凋落物格局和叶片老化过程进行了比较。本研究的结果证实了气候对地中海阔叶树冠状况的重要影响，因此即使是非急性污染的作用也可以被掩盖。黑栎叶的旱生适应也是一种机制，可以更好地保护其免受污染物的侵害。
In order to study the possible interactions between air pollution and climate conditions in Mediterranean evergreen broadleaf species, since 1987 we have been monitoring the annual and infra-annual variations in crown density of Quercus ilex L. (holm oak) in a permanent sample plot. The behaviour of crown density has been compared with litterfall pattern and aging processes in leaves. The results of this study confirm the important impact of climate on crown condition in Mediterranean broadleaves, so that even the role of nonacute pollution can be disguised. Xeromorph adaptations in holm oak leaves are also a mechanism providing a greater protection against pollutants.