气候变化领域集成服务门户(CCPortal): Substrate stoichiometry determines nitrogen fixation throughout succession in southern Chinese forests

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DOI	10.1111/ele.13437
	Substrate stoichiometry determines nitrogen fixation throughout succession in southern Chinese forests
	Zheng M.; Chen H.; Li D.; Luo Y.; Mo J.
发表日期	2020
ISSN	1461023X
卷号	23 期号:2
英文摘要	The traditional view holds that biological nitrogen (N) fixation often peaks in early- or mid-successional ecosystems and declines throughout succession based on the hypothesis that soil N richness and/or phosphorus (P) depletion become disadvantageous to N fixers. This view, however, fails to support the observation that N fixers can remain active in many old-growth forests despite the presence of N-rich and/or P-limiting soils. Here, we found unexpected increases in N fixation rates in the soil, forest floor, and moss throughout three successional forests and along six age-gradient forests in southern China. We further found that the variation in N fixation was controlled by substrate carbon(C) : N and C : (N : P) stoichiometry rather than by substrate N or P. Our findings highlight the utility of ecological stoichiometry in illuminating the mechanisms that couple forest succession and N cycling. © 2019 John Wiley & Sons Ltd/CNRS
英文关键词	Asymbiotic nitrogen fixation; forest succession; nitrogen richness; phosphorus limitation; stoichiometry; substrate
语种	英语
scopus关键词	Bryophyta; nitrogen; phosphorus; China; ecosystem; forest; nitrogen fixation; soil; tree; China; Ecosystem; Forests; Nitrogen; Nitrogen Fixation; Phosphorus; Soil; Trees
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/120940
作者单位	Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; Center for Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou, 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; University of Chinese Academy of Sciences, Beijing, 100039, China; Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China; Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ 86011, United States
推荐引用方式 GB/T 7714	Zheng M.,Chen H.,Li D.,et al. Substrate stoichiometry determines nitrogen fixation throughout succession in southern Chinese forests[J],2020,23(2).
APA	Zheng M.,Chen H.,Li D.,Luo Y.,&Mo J..(2020).Substrate stoichiometry determines nitrogen fixation throughout succession in southern Chinese forests.Ecology Letters,23(2).
MLA	Zheng M.,et al."Substrate stoichiometry determines nitrogen fixation throughout succession in southern Chinese forests".Ecology Letters 23.2(2020).