Allometric biomass partitioning under nitrogen enrichment: Evidence from manipulative experiments around the world

doi:10.1038/srep28918

CORC > 植物研究所 > 中国科学院植物研究所 > 植被与环境变化国家重点实验室

	Allometric biomass partitioning under nitrogen enrichment: Evidence from manipulative experiments around the world
	Peng, Yunfeng; Yang, Yuanhe
刊名	SCIENTIFIC REPORTS
	2016
卷号	6
ISSN号	2045-2322
DOI	10.1038/srep28918
文献子类	Article
英文摘要	Allometric and optimal hypotheses have been widely used to explain biomass partitioning in response to resource changes for individual plants; however, little evidence has been reported from measurements at the community level across a broad geographic scale. This study assessed the nitrogen (N) effect on community-level root to shoot (R/S) ratios and biomass partitioning functions by synthesizing global manipulative experiments. Results showed that, in aggregate, N addition decreased the R/S ratios in various biomes. However, the scaling slopes of the allometric equations were not significantly altered by the N enrichment, possibly indicating that N-induced reduction of the R/S ratio is a consequence of allometric allocation as a function of increasing plant size rather than an optimal partitioning model. To further illustrate this point, we developed power function models to explore the relationships between aboveground and belowground biomass for various biomes; then, we generated the predicted root biomass from the observed shoot biomass and predicted R/S ratios. The comparison of predicted and observed N-induced changes of the R/S ratio revealed no significant differences between each other, supporting the allometric allocation hypothesis. These results suggest that allometry, rather than optimal allocation, explains the N-induced reduction in the R/S ratio across global biomes.
学科主题	Multidisciplinary Sciences
出版地	BERLIN
WOS关键词	SOIL RESPIRATION ; ALLOCATION ; PATTERNS ; CARBON ; ECOSYSTEMS ; GROWTH ; PERSPECTIVE ; LIMITATION ; PLASTICITY ; NUTRIENTS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	NATURE PORTFOLIO
WOS记录号	WOS:000378735000001
资助机构	National Basic Research Program of China on Global ChangeNational Basic Research Program of China [2014CB954001, 2015CB954201] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31322011, 41371213, 31400417] ; China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2014T70140, 2013M540160] ; Chinese Academy of Sciences-Peking University Pioneer Collaboration Team ; Thousand Young Talents ProgramChinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/25116]
专题	植被与环境变化国家重点实验室
作者单位	Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Peng, Yunfeng,Yang, Yuanhe. Allometric biomass partitioning under nitrogen enrichment: Evidence from manipulative experiments around the world[J]. SCIENTIFIC REPORTS,2016,6.
APA	Peng, Yunfeng,&Yang, Yuanhe.(2016).Allometric biomass partitioning under nitrogen enrichment: Evidence from manipulative experiments around the world.SCIENTIFIC REPORTS,6.
MLA	Peng, Yunfeng,et al."Allometric biomass partitioning under nitrogen enrichment: Evidence from manipulative experiments around the world".SCIENTIFIC REPORTS 6(2016).