IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2015  > Vol12 No.1
Long-term responses of plant growth, soil microbial communities and soil enzyme activities to elevated CO2 and neighbouring plants
Duan, Baoli1; Zhang, Yuanbin1; Xu, Gang1,2; Chen, Juan1,5; Paquette, Alain3; Peng, Shuming1,4
Corresponding AuthorDuan, Baoli ; Zhang, Yuanbin
AbstractTree neighbourhoods can complicate the prediction of plant belowground responses to elevated CO2. We studied the effects of elevated CO2 on the root traits, soil microbial communities, and microbial extracellular enzyme activities in the rhizospheres of Abies faxoniana saplings grown alone or with different neighbouring species. A. faxoniana (alone), A. faxoniana grown with dwarf bamboo (Fargesia rufa), and A. faxoniana grown with biocrusts were exposed to ambient or to CO2-enriched air (ambient + 350 mu mol mol(-1)) for six years. The CO2 x neighbourhood interaction significantly affected A. faxoniana saplings growth, soil microbial communities, and soil enzyme activities. Elevated CO2 had relatively little effect on plant and microbial biomass and phospholipid fatty acid (PLFA) profiles in saplings grown alone. However, increased ectomycorrhizal colonization was observed in the roots of these saplings. Results suggested that the growth of saplings grown with biocrusts under elevated CO2 conditions was obtained by the enhanced soil microbial characteristics, whereas the positive effects of elevated CO2 on ectomycorrhizal fungi colonization in saplings grown alone could not delay or alleviate the progressive nitrogen (N) limitation as is evidenced by similar plant biomass under elevated and ambient CO2 treatments. In contrast, elevated CO2 significantly decreased the growth of A. faxoniana in the presence of dwarf bamboo, and this reduction was accompanied by decreased soil and leaf N concentrations, microbial biomass carbon (C) and N, labile C, and total PLFA. We propose that the depletion of the C pool and the reduction in the soil microbial metabolic activities in saplings grown with dwarf bamboo may limit the rates of decomposition to release nutrients from organic matter for plant growth. These results suggest that neighbouring plants have belowground feedback that potentially contributes to plant performance. On the other hand, the results of the present study also showed that the responses of soil organic C to elevated CO2 are different in the presence and absence of neighbours and dependent on neighbour identity. Only mesocosms with biocrust had a tendency to maintain more soil organic C by increased soil microbial community abundance. Our results also highlight the value of studying elevated CO2 effects on aboveground-belowground associations to improve the prediction of subalpine ecosystem functioning under climate changes. (C) 2015 Elsevier B.V. All rights reserved.
KeywordElevated Co2 Fungal Colonization Plfa Microbial Community Competition
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
WOS Subject ExtendedAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
Indexed BySCI
WOS SubjectAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS IDWOS:000361255400009
Funding OrganizationNational Natural Science Foundation of China(31270649 ; Young Talent Team Program of the Institute of Mountain Hazards and Environment(SDSQB-2012-01) ; 31170373 ; 31400333)
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
CollectionJournal of Mountain Science_Journal of Mountain Science-2015_Vol12 No.1
Affiliation1.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
2.Southwest Univ Sci & Technol, Sch Life Sci, Mianyang 621010, Peoples R China
3.Univ Quebec, Ctr Forest Res CFR, Montreal, PQ H3C 3P8, Canada
4.Chengdu Univ Technol, Coll Mat & Chem & Chem Engn, Chengdu 610059, Peoples R China
5.Mianyang Normal Univ, Ecol Secur & Protect Key Lab Sichuan Prov, Mianyang 621010, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Duan, Baoli,Zhang, Yuanbin,Xu, Gang,et al. Long-term responses of plant growth, soil microbial communities and soil enzyme activities to elevated CO2 and neighbouring plants[J]. AGRICULTURAL AND FOREST METEOROLOGY,2015,213:91-101.
APA Duan, Baoli,Zhang, Yuanbin,Xu, Gang,Chen, Juan,Paquette, Alain,&Peng, Shuming.(2015).Long-term responses of plant growth, soil microbial communities and soil enzyme activities to elevated CO2 and neighbouring plants.AGRICULTURAL AND FOREST METEOROLOGY,213,91-101.
MLA Duan, Baoli,et al."Long-term responses of plant growth, soil microbial communities and soil enzyme activities to elevated CO2 and neighbouring plants".AGRICULTURAL AND FOREST METEOROLOGY 213(2015):91-101.
Files in This Item:
File Name/Size DocType Version Access License
Long-term responses (1207KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Duan, Baoli]'s Articles
[Zhang, Yuanbin]'s Articles
[Xu, Gang]'s Articles
Baidu academic
Similar articles in Baidu academic
[Duan, Baoli]'s Articles
[Zhang, Yuanbin]'s Articles
[Xu, Gang]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Duan, Baoli]'s Articles
[Zhang, Yuanbin]'s Articles
[Xu, Gang]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Long-term responses of plant growth, soil microbial communities and soil enzyme activities to elevated CO2 and neighbouring plants.pdf
Format: Adobe PDF
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.