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题名: Differences in ozone sensitivity among woody species are related to leaf morphology and antioxidant levels
作者: Li, Pin; Calatayud, Vicent; Gao, Feng; Uddling, Johan; Feng, Zhaozhong
刊名: TREE PHYSIOLOGY
出版日期: 2016-09
卷号: 36, 期号:9, 页码:1105-1116
关键词: antioxidant defense ; gas exchange ; leaf mass per area ; urban greening species ; visible symptoms
DOI: 10.1093/treephys/tpw042
部门归属: 城市与区域生态国家重点实验室
英文摘要: Ozone (O-3) sensitivity varies greatly among plant species. Leaf traits such as stomatal conductance, antioxidant capacity and leaf morphology and anatomy may play important roles in controlling this variation, but the relative contributions of each trait remain elusive. In this study, we examined the differences in O-3 sensitivity among 29 deciduous and evergreen woody species used for urban greening in China in an open-top chamber experiment. Elevated O-3 caused visible injury and reductions in net photosynthesis, and these effects differed significantly among species. The deciduous species Sorbaria sorbifolia, Hibiscus syriacus and Fraxinus chinensis were the most sensitive, while evergreen species ranked among the most tolerant. O-3 sensitivity was linked to both low leaf mass per area (LMA) and low leaf area-based antioxidant levels, but not to variation in leaf mass-based antioxidant levels or stomatal conductance. The well-known and easily measured leaf trait LMA thus represents a potentially useful metric for O-3 risk assessment and for selecting appropriate species for urban greening in O-3-polluted areas.
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35553
Appears in Collections:城市与区域生态国家重点实验室_期刊论文

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