文章基本信息

标题：Homogeneous light in shade-house experiment overestimates carbon gains in Norway maple seedlings
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作者：Alain Paquette ; Bastien Fontaine ; Christian Messier 等
期刊名称：Journal of Horticulture and Forestry
电子版ISSN：2006-9782
出版年度：2010
卷号：2
期号：6
页码：117-121
语种：English
出版社：Academic Journals
摘要：We set up a shade-house experiment with Norway maple growing at two light intensities typical of a disturbed and undisturbed forest canopy from either a homogeneous or a dynamic regime that mimics sunflecks. We show that although horticultural-grade shade-cloths can be finely tuned to provide daily averages of any light intensity, they do not appropriately mimic natural forest understories which are characterized by dynamic light environments composed of intense but short direct light events interspaced with prolonged period of low diffuse light. The results suggest that replicating the dynamic light environment of forests could be very important in experiments aimed at identifying the traits responsible for invasiveness in exotic species in forest understories, such as Norway maple in North America.
关键词：Norway maple (Acer platanoides);shade-house;tree seedling growth;photosynthetic response;forest understory;sunfleck;invasive tree species;pot experiment