globalchange  > 气候变化与战略
DOI: 10.1111/ele.13437
论文题名:
Substrate stoichiometry determines nitrogen fixation throughout succession in southern Chinese forests
作者: Zheng M.; Chen H.; Li D.; Luo Y.; Mo J.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2020
卷: 23, 期:2
起始页码: 336
结束页码: 347
语种: 英语
中文关键词: Asymbiotic nitrogen fixation ; forest succession ; nitrogen richness ; phosphorus limitation ; stoichiometry ; substrate
英文关键词: Bryophyta ; nitrogen ; phosphorus ; China ; ecosystem ; forest ; nitrogen fixation ; soil ; tree ; China ; Ecosystem ; Forests ; Nitrogen ; Nitrogen Fixation ; Phosphorus ; Soil ; Trees
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
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166749
Appears in Collections:气候变化与战略

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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

Recommended Citation:
Zheng M.,Chen H.,Li D.,et al. Substrate stoichiometry determines nitrogen fixation throughout succession in southern Chinese forests[J]. Ecology Letters,2020-01-01,23(2)
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