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  4. Journal of Mountain Science
  5. Journal of Mountain Science-2017
  6. Vol14 No.8
Impacts of warming on root biomass allocation in alpine steppe on the north Tibetan Plateau

文献类型：期刊论文

作者Ma, Xing-xing1,2; Yan, Yan1; Hong, Jiang-tao1,2; Lu, Xu-yang1; Wang, Xiao-dan1
刊名JOURNAL OF MOUNTAIN SCIENCE
出版日期2017-08-01
卷号14期号:8页码:1615-1623
关键词Coarse Root Fine Root Root Architecture Warming Climate Change Open-top Chambers
ISSN号1672-6316
DOI10.1007/s11629-016-3966-7
文献子类Article
英文摘要Biomass is an important component of global carbon cycling and is vulnerable to climate change. Previous studies have mainly focused on the responses of aboveground biomass and phenology to warming, while studies of root architecture and of root biomass allocation between coarse and fine roots have been scarcely reported in grassland ecosystems. We conducted an open-top-chamber warming experiment to investigate the effect of potential warming on root biomass and root allocation in alpine steppe on the north Tibetan Plateau. The results showed that Stipa purpurea had significantly higher total root length, root surface area and tips than Carex moocroftii. However, there were no differences in total root volume, mean diameter and forks for the two species. Warming significantly increased total root biomass (27.60%), root biomass at 0-10 cm depth (27.84%) and coarse root biomass (diameter > 0.20 mm, 57.68%) in the growing season (August). However, warming had no significant influence on root biomass in the non-growing season (April). Root biomass showed clear seasonal variations: total root biomass, root biomass at 0-10 cm depth and coarse root biomass significantly increased in the growing season. The increase in total root biomass was due to the enhancement of root biomass at 0-10 cm depth, to which the increase of coarse root biomass made a great contribution. This research is of significance for understanding biomass allocation, carbon cycling and biological adaptability in alpine grassland ecosystems under future climate change.
WOS关键词TERRESTRIAL ECOSYSTEMS ; ABOVEGROUND BIOMASS ; PICEA-ASPERATA ; SOIL ; NITROGEN ; GROWTH ; GRASSLAND ; RESPONSES ; DYNAMICS ; CARBON
语种英语
WOS记录号WOS:000407267400013
出版者SCIENCE PRESS
资助机构National Natural Science Foundation of China(41571205) ; Strategic Pilot Science and Technology Projects of Chinese Academy of Sciences(XDB03030505 ; XDA05050506)
源URL[http://ir.imde.ac.cn/handle/131551/18949]  
专题Journal of Mountain Science _Journal of Mountain Science-2017_Vol14 No.8
成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
通讯作者Wang, Xiao-dan
作者单位1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Ma, Xing-xing,Yan, Yan,Hong, Jiang-tao,et al. Impacts of warming on root biomass allocation in alpine steppe on the north Tibetan Plateau[J]. JOURNAL OF MOUNTAIN SCIENCE,2017,14(8):1615-1623.
APA Ma, Xing-xing,Yan, Yan,Hong, Jiang-tao,Lu, Xu-yang,&Wang, Xiao-dan.(2017).Impacts of warming on root biomass allocation in alpine steppe on the north Tibetan Plateau.JOURNAL OF MOUNTAIN SCIENCE,14(8),1615-1623.
MLA Ma, Xing-xing,et al."Impacts of warming on root biomass allocation in alpine steppe on the north Tibetan Plateau".JOURNAL OF MOUNTAIN SCIENCE 14.8(2017):1615-1623.

入库方式： OAI收割

来源：成都山地灾害与环境研究所

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