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DOI	10.1016/j.foreco.2021.119384
	Divergent scaling of fine-root nitrogen and phosphorus in different root diameters, orders and functional categories: A meta-analysis
	Wang, Zhiqiang; Huang, Heng; Yao, Buqing; Deng, Jianming; Ma, Zeqing; Niklas, Karl J.
通讯作者	Wang, ZQ (通讯作者)，Chengdu Univ, Inst Adv Study, Chengdu 610106, Sichuan, Peoples R China. ; Ma, ZQ (通讯作者)，Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Ctr Forest Ecosyst Studies, Beijing 100101, Peoples R China. ; Ma, ZQ (通讯作者)，Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Qianyanzhou Ecol Stn, Beijing 100101, Peoples R China.
发表日期	2021
ISSN	0378-1127
EISSN	1872-7042
卷号	495
英文摘要	Fine-root nitrogen (N) and phosphorus (P) concentrations play an important role in driving ecological processes such as nutrient cycling in terrestrial ecosystems. Previous studies have demonstrated that the N versus P scaling relationship for fine roots (<2 mm in diameter) on average follows a 0.82-power law across plant functional groups and ecosystems. However, little is known about the N versus P scaling relationships for different fine-root classification groups (classes of diameters, branch orders, and functional categories, e.g., absorptive and transport roots). We used a dataset comprising 1037 N-P paired observations for a total of 227 woody species to explore N versus P scaling relationships in different fine-root groups. The overall means of fine-root N and P concentrations and N:P ratios across all of the woody species were 12.27 mg g-1, 1.01 mg g-1, and 15.14, respectively. N and P concentrations, N:P ratios, and the numerical values of the N versus P scaling exponents differed significantly within and across the different fine-root classes. The numerical values of absorptive roots N versus P scaling exponents varied within plant functional groups (e.g., life-form, phylogenetic and mycorrhizal groups). The numerical values of absorptive roots scaling exponents declined from 0.89 in boreal regions to 0.61 tropical regions. These results indicate that fine roots (<2 mm in diameter) should be carefully classified into different groups/categories when N and P scaling relationships need to be determined to predict plant growth and vegetation productivity. Our results shed important light on attempts to modeling fine-root biogeochemical processes in terrestrial ecosystems.
关键词	N-P STOICHIOMETRY LEAF NITROGEN BIOLOGICAL STOICHIOMETRY PLANT GROWTH TEMPERATE ARCHITECTURE LIMITATION ALLOCATION WORLDWIDE
英文关键词	Fine roots; Nitrogen; Phosphorus; Scaling exponents; Scaling theory; Woody species
语种	英语
WOS研究方向	Forestry
WOS类目	Forestry
WOS记录号	WOS:000660297700004
来源期刊	FOREST ECOLOGY AND MANAGEMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/255122
作者单位	[Wang, Zhiqiang] Chengdu Univ, Inst Adv Study, Chengdu 610106, Sichuan, Peoples R China; [Huang, Heng] Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA; [Yao, Buqing] Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Cold Reg Restorat Ecol, Xining 810008, Qinghai, Peoples R China; [Yao, Buqing] Chinese Acad Sci, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China; [Deng, Jianming] Lanzhou Univ, Sch Life Sci, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Peoples R China; [Ma, Zeqing] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Ctr Forest Ecosyst Studies, Beijing 100101, Peoples R China; [Ma, Zeqing] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Qianyanzhou Ecol Stn, Beijing 100101, Peoples R China; [Niklas, Karl J.] Cornell Univ, Sch Integrat Plant Sci, Plant Biol Sect, Ithaca, NY 14853 USA
推荐引用方式 GB/T 7714	Wang, Zhiqiang,Huang, Heng,Yao, Buqing,et al. Divergent scaling of fine-root nitrogen and phosphorus in different root diameters, orders and functional categories: A meta-analysis[J]. 中国科学院西北生态环境资源研究院,2021,495.
APA	Wang, Zhiqiang,Huang, Heng,Yao, Buqing,Deng, Jianming,Ma, Zeqing,&Niklas, Karl J..(2021).Divergent scaling of fine-root nitrogen and phosphorus in different root diameters, orders and functional categories: A meta-analysis.FOREST ECOLOGY AND MANAGEMENT,495.
MLA	Wang, Zhiqiang,et al."Divergent scaling of fine-root nitrogen and phosphorus in different root diameters, orders and functional categories: A meta-analysis".FOREST ECOLOGY AND MANAGEMENT 495(2021).