globalchange  > 气候变化与战略
DOI: 10.1111/ele.13673
论文题名:
The allometry of plant height explains species loss under nitrogen addition
作者: Xiao Y.; Liu X.; Zhang L.; Song Z.; Zhou S.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2021
卷: 24, 期:3
起始页码: 553
结束页码: 562
语种: 英语
中文关键词: Allometry ; alpine meadow ; nitrogen addition ; plant height ; scaling exponents ; species loss
英文关键词: allometry ; biodiversity ; biomass ; nitrogen ; nutrient enrichment ; relative abundance ; species richness ; stand structure ; nitrogen ; biodiversity ; biomass ; plant ; Biodiversity ; Biomass ; Nitrogen ; Plants
英文摘要: Light asymmetry, with a higher light acquisition per unit biomass for larger plants, has been proposed as a major mechanism of species loss after nitrogen addition. However, solid evidence for this has been scarce. We measured the allometric size-height relationships of 25 plant species along a nitrogen addition gradient manipulated annually for eight years in a speciose alpine meadow and found that the positive relationship between species relative abundance and the height scaling exponent in natural conditions disappeared after nitrogen addition. Those species with lower height scaling exponents increased in relative abundance after nitrogen addition, thereby decreasing the community weighted mean and dispersion of the height scaling exponent and ultimately the species richness. Our results provided some unique evidence for light asymmetry induced species loss after nitrogen addition and a new insight from the perspective of allometric scaling to explain biodiversity maintenance in the face of global changes. © 2021 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166956
Appears in Collections:气候变化与战略

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作者单位: Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Coastal Ecosystems Research Station of the Yangtze River Estuary, Institute of Biodiversity Science, School of Life Sciences, Fudan University, 2005 Songhu Road, Shanghai, 200438, China; Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, Ministry of Education, College of Forestry, Hainan University, Haikou, 570228, China; State Key Laboratory of Grassland Agro-Ecosystem, Institute of Innovation Ecology, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China

Recommended Citation:
Xiao Y.,Liu X.,Zhang L.,et al. The allometry of plant height explains species loss under nitrogen addition[J]. Ecology Letters,2021-01-01,24(3)
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