干旱区生态环境知识资源中心(Arid): C:N:P stoichiometry in terrestrial ecosystems in China

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DOI	10.1016/j.scitotenv.2021.148849
	C:N:P stoichiometry in terrestrial ecosystems in China
	Zhang, Jiahui; Li, Mingxu; Xu, Li; Zhu, Jianxing; Dai, Guanhua; He, Nianpeng
通讯作者	Li, MX (corresponding author), Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China. ; He, NP (corresponding author), Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	795
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.
英文关键词	Ecological stoichiometry Community-weighted mean Plant organs Ecosystem components
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000700334500002
WOS关键词	FOREST ; PHOSPHORUS ; NITROGEN ; CARBON ; DYNAMICS ; BALANCE ; MODEL ; AVAILABILITY ; RESORPTION ; TRAITS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364581
作者单位	[Zhang, Jiahui; Li, Mingxu; Xu, Li; Zhu, Jianxing; He, Nianpeng] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; [Zhang, Jiahui; He, Nianpeng] Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China; [Dai, Guanhua] Chinese Acad Sci, Res Stn Changbai Mt Forest Ecosyst, Antu 133613, Peoples R China; [He, Nianpeng] 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]. 中国科学院地理科学与资源研究所,2021,795.
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.
MLA	Zhang, Jiahui,et al."C:N:P stoichiometry in terrestrial ecosystems in China".SCIENCE OF THE TOTAL ENVIRONMENT 795(2021).