C:N:P stoichiometry in terrestrial ecosystems in China

doi:10.1016/j.scitotenv.2021.148849

	C:N:P stoichiometry in terrestrial ecosystems in China
	Zhang, Jiahui 1,2; Li, Mingxu 1; Xu, Li 1; Zhu, Jianxing 1; Dai, Guanhua 3; He, Nianpeng 1,2,4
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2021-11-15
卷号	795 页码:9
关键词	Ecological stoichiometry Community-weighted mean Plant organs Ecosystem components
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2021.148849
通讯作者	Li, Mingxu(mingxuli@igsnrr.ac.cn) ; He, Nianpeng(henp@igsnrr.ac.cn)
英文摘要	Ecological stoichiometry is an efficient tool for exploring the balance and cycling of coupled elements (e.g., carbon [C], nitrogen [N], and phosphorus [P]). Therefore, C:N:P ratios are essential input parameters in most ecological models of productivity or C cycling. However, previous C:N:P ratios estimated using the species arithmetic means exhibit high uncertainty when used as direct model parameters. In this study, we comprehensively calculated C:N:P ratios from organs to ecosystems for 66 typical natural ecosystems in China (e.g., forests, grasslands, and deserts) using the community biomass-weighted mean (CWM), with the consistently measured element data of 3229 site-species combination. The C:N:P ratios were 427:19:1, 885:13:1, 9549:33:1, and 797:18:1 in the leaves, branches, trunks, and roots of terrestrial ecosystems, respectively. Furthermore, the ratios were 91:4:1, 919:17:1, 1121:25:1, and 55:4:1 in ecosystems, plant communities, litter, and soils, respectively. Signifi-cant differences were observed in C:N:P ratios among different ecosystem types and biomes, with generally higher ratios in forests. Moreover, the latitudinal patterns of C:N ratios exhibited no obvious trends, whereas both C:P and N:P ratios decreased significantly with increasing latitude, especially in forests. Environmental conditions explained 15.4-86.6% of the spatial variation of C:N:P ratios from organs to ecosystems. In summary, this study systematically demonstrates the variations in biome-scale C:N:P stoichiometry in terrestrial ecosystems, as well as their influencing factors, using the CWM. More importantly, this study provides a systematic dataset of C: N:P ratios from plot to biome scale that can be used to improve relevant ecological models. (c) 2021 Elsevier B.V. All rights reserved.
资助项目	National Science and Technology Basic Resources Survey Program of China[2019FY101304] ; National Natural Science Foundation of China[31988102] ; National Natural Science Foundation of China[31961143022] ; National Key Research and Development Programof China[2017YFA0604803] ; Youth Innovation Research Project from Key Laboratory of Ecosystem Network Observation and Modeling, CAS
WOS关键词	FOREST ; PHOSPHORUS ; NITROGEN ; CARBON ; DYNAMICS ; BALANCE ; MODEL ; AVAILABILITY ; RESORPTION ; TRAITS
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000700334500002
资助机构	National Science and Technology Basic Resources Survey Program of China ; National Natural Science Foundation of China ; National Key Research and Development Programof China ; Youth Innovation Research Project from Key Laboratory of Ecosystem Network Observation and Modeling, CAS
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165770]
专题	中国科学院地理科学与资源研究所
通讯作者	Li, Mingxu; He, Nianpeng
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Res Stn Changbai Mt Forest Ecosyst, Antu 133613, Peoples R China 4.Northeast Normal Univ, Inst Grassland Sci, Key Lab Vegetat Ecol, Minist Educ, Changchun 130024, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jiahui,Li, Mingxu,Xu, Li,et al. C:N:P stoichiometry in terrestrial ecosystems in China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,795:9.
APA	Zhang, Jiahui,Li, Mingxu,Xu, Li,Zhu, Jianxing,Dai, Guanhua,&He, Nianpeng.(2021).C:N:P stoichiometry in terrestrial ecosystems in China.SCIENCE OF THE TOTAL ENVIRONMENT,795,9.
MLA	Zhang, Jiahui,et al."C:N:P stoichiometry in terrestrial ecosystems in China".SCIENCE OF THE TOTAL ENVIRONMENT 795(2021):9.