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

文献类型：期刊论文

作者Li, Changbin2,3; Zheng, Zhi2; Peng, Yunfeng4; Nie, Xiuqing2,3; Yang, Lucun2; Xiao, Yuanming2,3; Zhou, Guoying2
刊名ECOLOGY AND EVOLUTION
出版日期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
DOI10.1002/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
WOS记录号WOS:000496173700014
出版者WILEY
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.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
2.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Tibetan Med Res, 23 Xinning Rd, Xining 810008, Qinghai, Peoples R China
3.Qinghai Key Lab Qing Tibet Biol Resources, Xining, Qinghai, Peoples R China
4.Univ Chinese Acad Sci, Beijing, 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.

入库方式： OAI收割

来源：植物研究所

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