IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2016  > Vol13 No.6
Soil microbial community composition and its driving factors in alpine grasslands along a mountain elevational gradient
Cui Hai-jun; Wang Gen-xu; Yang Yan; Yang Yang; Chang Rui-ying; Ran Fei
Corresponding AuthorWANG Gen-xu
2016
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
EISSN1993-0321
Volume13Issue:6Pages:1013-1023
SubtypeArticle
AbstractUnderstanding the vertical distribution patterns of soil microbial community and its driving factors in alpine grasslands in the humid regions of the Tibet Plateau might be of great significance for predicting the soil microbial community of this type of vegetation in response to environmental change. Using phospholipid fatty acids (PLFA), we investigated soil microbial community composition along an elevational gradient (3094 similar to 4131 m above sea level) on Mount Yajiageng, and we explored the impact of plant functional groups and soil chemistry on the soil microbial community. Except for Arbuscular Mycorrhizal fungi (AM fungi) biomarker 18:2 omega 6,9 increasing significantly, other biomarkers did not show a consistent trend with the elevational gradient. Microbial biomass quantified by total PLFAs did not show the elevational trend and had mean values ranging from 1.64 to 4.09 mu mol per g organic carbon (OC), which had the maximum value at the highest site. Bacterial PLFAs exhibited a similar trend with total PLFAs, and its mean values ranged from 0.82 to 1.81 mu mol (g OC)(-1). The bacterial to fungal biomass ratios had the minimum value at the highest site, which might be related to temperature and soil total nitrogen (TN). The ratios of Gram-negative to Gram-positive bacteria had a significantly negative correlation with soil TN and had the maximum value at the highest site. Leguminous plant coverage and soil TN explained 58% of the total variation in the soil microbial community and could achieve the same interpretation as the whole model. Other factors may influence the soil microbial community through interaction with leguminous plant coverage and soil TN. Soil chemistry and plant functional group composition in substantial amounts explained different parts of the variation within the soil microbial community, and the interaction between them had no impact on the soil microbial community maybe because long-term grazing greatly reduces litter. In sum, although there were obvious differences in soil microbial communities along the elevation gradient, there were no clear elevational trends found in general. Plant functional groups and soil chemistry respectively affect the different aspects of soil microbial community. Leguminous plant coverage and soil TN had important effects in shaping soil microbial community.
KeywordAlpine Grassland Elevational Gradient Soil Microbial Community Phospholipid Fatty Acid Plant Functional Group Soil Chemistry Variance Partitioning
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s11629-015-3614-7
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS KeywordPHOSPHOLIPID FATTY-ACID ; PLANT DIVERSITY ; BACTERIAL COMMUNITIES ; TIBETAN PLATEAU ; CLIMATE-CHANGE ; FOOD-WEB ; BIOMASS ; ECOSYSTEM ; FOREST ; CARBON
Language英语
Quartile4区
TOP
WOS SubjectEnvironmental Sciences
WOS IDWOS:000379268300005
Funding OrganizationCAS/SAFER International Partnership Program for Creative Research Teams(KZZD-EW-TZ-06)
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17216
CollectionJournal of Mountain Science_Journal of Mountain Science-2016_Vol13 No.6
山地表生过程与生态调控重点实验室
AffiliationChinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, 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
Cui Hai-jun,Wang Gen-xu,Yang Yan,et al. Soil microbial community composition and its driving factors in alpine grasslands along a mountain elevational gradient[J]. JOURNAL OF MOUNTAIN SCIENCE,2016,13(6):1013-1023.
APA Cui Hai-jun,Wang Gen-xu,Yang Yan,Yang Yang,Chang Rui-ying,&Ran Fei.(2016).Soil microbial community composition and its driving factors in alpine grasslands along a mountain elevational gradient.JOURNAL OF MOUNTAIN SCIENCE,13(6),1013-1023.
MLA Cui Hai-jun,et al."Soil microbial community composition and its driving factors in alpine grasslands along a mountain elevational gradient".JOURNAL OF MOUNTAIN SCIENCE 13.6(2016):1013-1023.
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