Global leaf nitrogen and phosphorus stoichiometry and their scaling exponent

doi:10.1093/nsr/nwx142

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	Global leaf nitrogen and phosphorus stoichiometry and their scaling exponent
	Tian, Di 2,6; Yan, Zhengbing 2; Niklas, Karl J.; Han, Wenxuan 8; Kattge, Jens 7; Reich, Peter B.; Luo, Yongkai 4; Chen, Yahan 4; Tang, Zhiyao 2; Hu, Huifeng 4
刊名	NATIONAL SCIENCE REVIEW
	2018
卷号	5 期号:5 页码:728-739
关键词	leaf nitrogen phosphorus stoichiometry scaling exponent functional group biogeography
ISSN号	2095-5138
DOI	10.1093/nsr/nwx142
文献子类	Review
英文摘要	Leaf nitrogen (N) and phosphorus (P) concentrations constrain photosynthetic and metabolic processes, growth and the productivity of plants. Their stoichiometry and scaling relationships regulate the allocation of N and P from subcellular to organism, and even ecosystem levels, and are crucial to the modelling of plant growth and nutrient cycles in terrestrial ecosystems. Prior work has revealed a general biogeographic pattern of leaf N and P stoichiometric relationships and shown that leaf N scales roughly as two-thirds the power of P. However, determining whether and how leaf N and P stoichiometries, especially their scaling exponents, change with functional groups and environmental conditions requires further verification. In this study, we compiled a global data set and documented the global leaf N and P concentrations and the N: P ratios by functional group, climate zone and continent. The global overall mean leaf N and P concentrations were 18.9 mg g(-1) and 1.2 mg g(-1), respectively, with significantly higher concentrations in herbaceous than woody plants (21.72 mg g(-1) vs. 18.22 mg g(-1) for N; and 1.64 mg g(-1) vs. 1.10 mg g(-1) for P). Both leaf N and P showed higher concentrations at high latitudes than low latitudes. Among six continents, Europe had the highest N and P concentrations (20.79 and 1.54 mg g(-1)) and Oceania had the smallest values (10.01 and 0.46 mg g(-1)). These numerical values may be used as a basis for the comparison of other individual studies. Further, we found that the scaling exponent varied significantly across different functional groups, latitudinal zones, ecoregions and sites. The exponents of herbaceous and woody plants were 0.659 and 0.705, respectively, with significant latitudinal patterns decreasing from tropical to temperate to boreal zones. At sites with a sample size >= 10, the values fluctuated from 0.366 to 1.928, with an average of 0.841. Several factors including the intrinsic attributes of different life forms, P-related growth rates and relative nutrient availability of soils likely account for the inconstant exponents of leaf N vs. P scaling relationships.
学科主题	Multidisciplinary Sciences
电子版国际标准刊号	2053-714X
出版地	OXFORD
WOS关键词	N-P STOICHIOMETRY ; NUTRIENT LIMITATION ; PLANT-GROWTH ; FRESH-WATER ; SOIL ; ECOSYSTEMS ; FERTILIZATION ; GENERALITY ; ALLOMETRY ; GRADIENTS
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000448667000023
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31621091, 31330012] ; National Key Research and Development Program of China [2017YFC0503900] ; TRY initiative on plant traits ; DIVERSITAS/Future Earth ; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig ; European Union BACI project [640176]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/20457]
专题	植被与环境变化国家重点实验室
作者单位	1.Max Planck Inst Biogeochem, D-07745 Jena, Germany 2.Peking Univ, Inst Ecol, Coll Urban & Environm Sci, Beijing 100871, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 4.Reich, Peter B.] Western Sydney Univ, Hawkesbury Inst Environm, Penrith, NSW 2751, Australia 5.Reich, Peter B.] Univ Minnesota, Dept Forest Resources, St Paul, MN 55108 USA 6.Peking Univ, Minist Educ, Key Lab Earth Surface Proc, Beijing 100871, Peoples R China 7.China Agr Univ, Key Lab Plant Soil Interact, Minist Educ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China 8.Niklas, Karl J.] Cornell Univ, Dept Plant Biol, Ithaca, NY 14850 USA 9.Univ Zurich, Dept Evolutionary Biol & Environm Studies, CH-8057 Zurich, Switzerland 10.Wright, Ian J.] Macquarie Univ, Dept Biol Sci, Sydney, NSW 2109, Australia
推荐引用方式 GB/T 7714	Tian, Di,Yan, Zhengbing,Niklas, Karl J.,et al. Global leaf nitrogen and phosphorus stoichiometry and their scaling exponent[J]. NATIONAL SCIENCE REVIEW,2018,5(5):728-739.
APA	Tian, Di.,Yan, Zhengbing.,Niklas, Karl J..,Han, Wenxuan.,Kattge, Jens.,...&Fang, Jingyun.(2018).Global leaf nitrogen and phosphorus stoichiometry and their scaling exponent.NATIONAL SCIENCE REVIEW,5(5),728-739.
MLA	Tian, Di,et al."Global leaf nitrogen and phosphorus stoichiometry and their scaling exponent".NATIONAL SCIENCE REVIEW 5.5(2018):728-739.