干旱区生态环境知识资源中心(Arid): Biogeography and the driving factors affecting forest soil bacteria in an arid area

Arid

DOI	10.1016/j.scitotenv.2019.04.184
	Biogeography and the driving factors affecting forest soil bacteria in an arid area
	Zeng, Quanchao 1,2; An, Shaoshan 1; Liu, Yang 1; Wang, Honglei 1; Wang, Ying 1
通讯作者	An, Shaoshan
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2019
卷号	680 页码:124-131
英文摘要	Bacteria are one of the most abundant and diverse groups and mediate many critical terrestrial ecosystem processes. Despite the crucial ecological role of bacteria, our understanding of their large-scale biogeography patterns across longitude (east-west transect), and the processes that determine these patterns lags significantly behind that of macro-organisms. Here, we used 16S rRNA gene sequencing to evaluate the geographic distributions of bacterial diversity and their driving factors across different longitude sites along an 800-km east-west transect in the Loess Plateau. Twenty-four phyla were detected across all soil samples and the most sequence-abundant bacterial phyla were Acidobacteria, Actinobacteria, Alphaproteobacteria, Betaproteobacteria, Chloroflexi and Gemmatimonadetes (average relative abundance >5%). Soil bacterial a-diversity, expressed by the richness of soil bacterial communities and Shannon diversity, differed among climates (MAP) but showed strong correlations with MAP (r = -0.537 and r = -0.42, respectively: p < 0.05 in both bacterial diversity indices). Variation partition analysis demonstrated that the bacterial community structure was closely correlated with environmental variables and geographic distance, which together explained 62% of the community variation. Soil properties contributed more to bacterial community variation than the combined geographic distance (historical contingencies) and climate factors. Among all environmental factors, soil pH exhibited a dominant role in structuring bacterial communities in this arid area. Our findings provide new evidence of bacterial biogeography patterns in an arid area (MAP ranged from 473 mm to 547 mm). Additionally, the results indicated a close linkage among soil bacterial community, climate and edaphic variables, which is critical for predicting promoting sustainable ecosystem services in the Loess Plateau. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Bacterial diversity Climate Forest Geography Loess Plateau
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000468863400013
WOS关键词	COMMUNITY STRUCTURE ; FUNGAL COMMUNITIES ; GLOBAL PATTERNS ; MICROBIAL DIVERSITY ; PH ; FERTILIZATION ; TEMPERATURE ; VARIABILITY ; SUCCESSION ; GRASSLAND
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218703
作者单位	1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China; 2.Huazhong Agr Univ, Coll Resources & Environm, Wuhan 430070, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Quanchao,An, Shaoshan,Liu, Yang,et al. Biogeography and the driving factors affecting forest soil bacteria in an arid area[J]. 西北农林科技大学,2019,680:124-131.
APA	Zeng, Quanchao,An, Shaoshan,Liu, Yang,Wang, Honglei,&Wang, Ying.(2019).Biogeography and the driving factors affecting forest soil bacteria in an arid area.SCIENCE OF THE TOTAL ENVIRONMENT,680,124-131.
MLA	Zeng, Quanchao,et al."Biogeography and the driving factors affecting forest soil bacteria in an arid area".SCIENCE OF THE TOTAL ENVIRONMENT 680(2019):124-131.