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Responses of soil respiration and its components to experimental warming in an alpine scrub ecosystem on the eastern Qinghai-Tibet Plateau

文献类型：期刊论文

作者Ma, Zhiliang1,2,3; Zhao, Wenqiang1; Liu, Mei1,3; Liu, Qing1
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2018-12
卷号643页码:1427-1435
ISSN号0048-9697
关键词Soil respiration Heterotrophic respiration Rhizosphere respiration Experimental warming Alpine scrub Qinghai-Tibet Plateau
DOI10.1016/j.scitotenv.2018.06.243
产权排序1
文献子类Article
英文摘要The responses of soil respiration (R-s) to warming are driven by its components, that is, heterotrophic respiration (R-h) and rhizosphere respiration (R-r, including fine root respiration [R-fr] and rhizomicrobial respiration [R-z]). However, the effects of warming on R-s and its components are rarely studied in alpine scrub ecosystems on the Qinghai-Tibet Plateau. Here, we conducted a warming experiment to examine how R-s and its components respond to experimental warming. We found that one-year experimental warming (increased by 1.3 degrees C) significantly stimulated the rates of R-s, R-h and R-r by 21.6, 23.8, and 21.1%, respectively. The annual cumulative C effluxes of R-s increased by 87.87 g m(-2) with nearly equal contributions from R-h (46.84 g m(-2)) and R-r (41.03 g m(-2)) under warming. Moreover, warming-induced increase in R-r mainly resulted from increased R-fr rather than R-z due to the significant increase in fine root biomass and R-fr rate. In addition, the Q(10) values for R-s, R-h and R-r were also increased by experimental warming, while the contribution of R-h to R-s was not altered by experimental warming. Collectively, our results suggest that future climatic warming will stimulate more C releases from soil to the atmosphere through an enhancement of both R-h and R-r in these alpine scrub ecosystems on the Qinghai-Tibet Plateau. (C) 2018 Elsevier B.V. All rights reserved.
学科主题Environment/ecology
URL标识查看原文
WOS关键词SIBIRAEA-ANGUSTATA SCRUB ; BELOW-GROUND LITTER ; TERM N ADDITION ; ROOT RESPIRATION ; HETEROTROPHIC RESPIRATION ; CLIMATE-CHANGE ; TEMPERATURE SENSITIVITY ; AUTOTROPHIC RESPIRATION ; MICROBIAL BIOMASS ; CARBON FEEDBACK
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者ELSEVIER SCIENCE BV
WOS记录号WOS:000444625900133
源URL[http://210.75.237.14/handle/351003/29880]  
专题生物多样性与生态系统服务领域_生态研究
生物多样性与生态系统服务领域_中国科学院山地生态恢复与生物资源利用重点实验室
生物多样性与生态系统服务领域_生态系统恢复与生物多样性保育四川省重点实验室
通讯作者Liu, Qing
作者单位1.Chinese Acad Sci, Ecol Restorat Biodivers Conservat Key Lab Sichuan, Key Lab Mt Ecol Restorat & Bioresource Utilizat, Chengdu Inst Biol, Chengdu 610041, Sichuan, Peoples R China;
2.Sichuan Univ, Coll Life Sci, Chengdu 610064, Sichuan, Peoples R China;
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Ma, Zhiliang,Zhao, Wenqiang,Liu, Mei,et al. Responses of soil respiration and its components to experimental warming in an alpine scrub ecosystem on the eastern Qinghai-Tibet Plateau[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,643:1427-1435.
APA Ma, Zhiliang,Zhao, Wenqiang,Liu, Mei,&Liu, Qing.(2018).Responses of soil respiration and its components to experimental warming in an alpine scrub ecosystem on the eastern Qinghai-Tibet Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,643,1427-1435.
MLA Ma, Zhiliang,et al."Responses of soil respiration and its components to experimental warming in an alpine scrub ecosystem on the eastern Qinghai-Tibet Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 643(2018):1427-1435.

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来源：成都生物研究所

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