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Bacterial richness is negatively related to potential soil multifunctionality in a degraded alpine meadow

文献类型：期刊论文

作者Wang, Jie2; Wang, Xiangtao1; Liu, Guobin2,3; Zhang, Chao2; Wang, Guoliang2
刊名ECOLOGICAL INDICATORS
出版日期2021-02-01
卷号121页码:10
关键词Alpine meadow Degradation Bacterial diversity Potential soil multifunctionality
ISSN号1470-160X
DOI10.1016/j.ecolind.2020.106996
通讯作者Zhang, Chao(zhangchao1985@nwafu.edu.cn) ; Wang, Guoliang(glwang@nwsuaf.edu.cn)
英文摘要Fungal richness and community composition are known to be positively associated with soil multifunctionality. However, the contributions of bacterial and fungal communities to the multiple soil functions of alpine meadow ecosystems have not been widely examined. Here, we surveyed the soil in Qinghai-Tibetan alpine meadows and classified the extent of degradation as undegraded, lightly degraded, moderately degraded, and severely degraded to clarify the associations between microbial diversity (including bacteria and fungi) and potential soil multifunctionality. Bacterial and fungal compositions were detected by sequencing of the 16S rDNA and internal transcribed spacer amplicons, respectively. Functions associated with nutrient cycling (dissolved organic nitrogen and carbon, available phosphorus, NO3-, NH4+, C, N, P-cycle enzymes) and climate regulation (CO2 and N2O emissions) were also examined. Bacterial, rather than fungal, richness was negatively associated with potential soil multifunctionality, which decreased along the degradation gradient. Structural equation modeling explained 79.6% of the variation in potential soil multifunctionality and confirmed that, in addition to bacterial community richness and composition, organic carbon and moisture were important drivers of potential soil multifunctionality. These results suggest that higher bacterial richness is associated with lower potential soil multifunctionality in alpine meadow ecosystems. Among the bacterial taxa, only similar to 12% of bacterial genera were identified as predictors of multifunctionality, suggesting functional redundancy of the bacterial community in the meadow ecosystem. Rhodanobacter, Mucilaginibacter, Rhodococcus, and Bosea, belonging to the Proteobacteria and the Actinobacteria phyla were identified as critical for maintaining potential soil multifunctionality. Our results suggest that bacterial richness is negatively related to potential soil multifunctionality in alpine meadow ecosystems and there is no correlation between potential multifunctionality and fungal richness.
WOS关键词QINGHAI-TIBETAN PLATEAU ; ECOSYSTEM MULTIFUNCTIONALITY ; ABANDONED FARMLAND ; FUNGAL COMMUNITIES ; ENZYME-ACTIVITY ; GRASSLAND ; BIODIVERSITY ; NITROGEN ; DEGRADATION ; DENITRIFICATION
资助项目Strategic Priority Program of the Chinese Academy of Sciences (CAS)[XDA20040200] ; Shaanxi Innovation Support Plan for Youth[2019KJXX-081] ; National Key Research and Development Program of China[2016YFC0501707] ; National Natural Sciences Foundation of China[41771554]
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000604888900009
出版者ELSEVIER
资助机构Strategic Priority Program of the Chinese Academy of Sciences (CAS) ; Shaanxi Innovation Support Plan for Youth ; National Key Research and Development Program of China ; National Natural Sciences Foundation of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/136923]  
专题中国科学院地理科学与资源研究所
通讯作者Zhang, Chao; Wang, Guoliang
作者单位1.Xizang Agr & Anim Husb Coll, Dept Anim Sci, Linzhi 860000, Peoples R China
2.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Jie,Wang, Xiangtao,Liu, Guobin,et al. Bacterial richness is negatively related to potential soil multifunctionality in a degraded alpine meadow[J]. ECOLOGICAL INDICATORS,2021,121:10.
APA Wang, Jie,Wang, Xiangtao,Liu, Guobin,Zhang, Chao,&Wang, Guoliang.(2021).Bacterial richness is negatively related to potential soil multifunctionality in a degraded alpine meadow.ECOLOGICAL INDICATORS,121,10.
MLA Wang, Jie,et al."Bacterial richness is negatively related to potential soil multifunctionality in a degraded alpine meadow".ECOLOGICAL INDICATORS 121(2021):10.

入库方式： OAI收割

来源：地理科学与资源研究所

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