Precipitation and nitrogen addition enhance biomass allocation to aboveground in an alpine steppe

doi:10.1002/ece3.5706

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

	Precipitation and nitrogen addition enhance biomass allocation to aboveground in an alpine steppe
	Li, Changbin 1,4; Zheng, Zhi 4; Peng, Yunfeng 2; Nie, Xiuqing 1,4; Yang, Lucun 4; Xiao, Yuanming 1,4; Zhou, Guoying 4
刊名	ECOLOGY AND EVOLUTION
	2019
卷号	9 期号:21 页码:12193-12201
关键词	aboveground biomass belowground biomass nitrogen addition precipitation changes Tibetan alpine steppe
ISSN号	2045-7758
DOI	10.1002/ece3.5706
文献子类	Article
英文摘要	There are two important allocation hypotheses in plant biomass allocation: allometric and isometric. We tested these two hypotheses in an alpine steppe using plant biomass allocation under nitrogen (N) addition and precipitation (Precip) changes at a community level. An in situ field manipulation experiment was conducted to examine the two hypotheses and the responses of the biomass to N addition (10 g N m(-2) y(-1)) and altered Precip (+/- 50% precipitation) in an alpine steppe on the Qinghai-Tibetan Plateau from 2013 to 2016. We found that the plant community biomass differed in its response to N addition and reduced Precip such that N addition significantly increased aboveground biomass (AGB), while reduced Precip significantly decreased AGB from 2014 to 2016. Moreover, reduced Precip enhanced deep soil belowground biomass (BGB). In the natural alpine steppe, the allocation between AGB and BGB was consistent with the isometric hypotheses. In contrast, N addition or altered Precip enhanced biomass allocation to aboveground, thus leading to allometric growth. More importantly, reduced Precip enhanced biomass allocation into deep soil. Our study provides insight into the responses of alpine steppes to global climate change by linking AGB and BGB allocation.
学科主题	Ecology ; Evolutionary Biology
出版地	HOBOKEN
WOS关键词	CLIMATE-CHANGE ; PLANT ; DEPOSITION ; RESPONSES ; PATTERNS ; CARBON ; CHINA ; STOICHIOMETRY ; COMPETITION ; LIMITATION
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
语种	英语
出版者	WILEY
WOS记录号	WOS:000496173700014
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/19700]
专题	植被与环境变化国家重点实验室
作者单位	1.Qinghai Key Lab Qing Tibet Biol Resources, Xining, Qinghai, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 4.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Tibetan Med Res, 23 Xinning Rd, Xining 810008, Qinghai, Peoples R China
推荐引用方式 GB/T 7714	Li, Changbin,Zheng, Zhi,Peng, Yunfeng,et al. Precipitation and nitrogen addition enhance biomass allocation to aboveground in an alpine steppe[J]. ECOLOGY AND EVOLUTION,2019,9(21):12193-12201.
APA	Li, Changbin.,Zheng, Zhi.,Peng, Yunfeng.,Nie, Xiuqing.,Yang, Lucun.,...&Zhou, Guoying.(2019).Precipitation and nitrogen addition enhance biomass allocation to aboveground in an alpine steppe.ECOLOGY AND EVOLUTION,9(21),12193-12201.
MLA	Li, Changbin,et al."Precipitation and nitrogen addition enhance biomass allocation to aboveground in an alpine steppe".ECOLOGY AND EVOLUTION 9.21(2019):12193-12201.