气候变化领域集成服务门户(CCPortal): Enhanced light interception and light use efficiency explain overyielding in young tree communities

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DOI	10.1111/ele.13717
	Enhanced light interception and light use efficiency explain overyielding in young tree communities
	Williams L.J.; Butler E.E.; Cavender-Bares J.; Stefanski A.; Rice K.E.; Messier C.; Paquette A.; Reich P.B.
发表日期	2021
ISSN	1461023X
起始页码	996
结束页码	1006
卷号	24 期号:5
英文摘要	Diverse plant communities are often more productive than mono-specific ones. Several possible mechanisms underlie this phenomenon but their relative importance remains unknown. Here we investigated whether light interception alone or in combination with light use efficiency (LUE) of dominant and subordinate species explained greater productivity of mixtures relative to monocultures (i.e. overyielding) in 108 young experimental tree communities. We found mixed-species communities that intercepted more light than their corresponding monocultures had 84% probability of overyielding. Enhanced LUE, which arose via several pathways, also mattered: the probability of overyielding was 71% when, in a mixture, species with higher ‘inherent’ LUE (i.e. LUE in monoculture) intercepted more light than species with lower LUE; 94% when dominant species increased their LUE in mixture; and 79% when subordinate species increased their LUE. Our results suggest that greater light interception and greater LUE, generated by inter and intraspecific variation, together drive overyielding in mixed-species forests. © 2021 John Wiley & Sons Ltd.
关键词	biodiversity–ecosystem function complementarity diversity–productivity ecophysiology forest productivity functional diversity IDENT niche partitioning photosynthetic light-response
英文关键词	biodiversity; biomass; forest; plant; Biodiversity; Biomass; Forests; Plants
语种	英语
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/204511
作者单位	Department of Forest Resources, University of Minnesota, St Paul, MN 55108, United States; Department of Ecology, Evolution and Behavior, University of Minnesota, St Paul, MN 55108, United States; Extension Education, University of Florida, Fort Lauderdale, FL 33314, United States; Centre for Forest Research, Université du Québec à Montréal, Montréal, QC H3C 3P8, Canada; Institut des sciences de la forêt tempérée, Université du Québec en Outaouais, Ripon, QC J0V 1V0, Canada; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW 2753, Australia
推荐引用方式 GB/T 7714	Williams L.J.,Butler E.E.,Cavender-Bares J.,et al. Enhanced light interception and light use efficiency explain overyielding in young tree communities[J],2021,24(5).
APA	Williams L.J..,Butler E.E..,Cavender-Bares J..,Stefanski A..,Rice K.E..,...&Reich P.B..(2021).Enhanced light interception and light use efficiency explain overyielding in young tree communities.Ecology Letters,24(5).
MLA	Williams L.J.,et al."Enhanced light interception and light use efficiency explain overyielding in young tree communities".Ecology Letters 24.5(2021).