DOI: 10.1016/j.scitotenv.2020.137713
论文题名: Intensive land uses modify assembly process and potential metabolic function of edaphic bacterial communities in the Yellow River Delta, China
作者: Zou Y. ; Yan J. ; Hou S. ; Yi Y. ; Cui B.
刊名: Science of the Total Environment
ISSN: 489697
出版年: 2020
卷: 720 语种: 英语
英文关键词: Assembly process
; Coastal wetlands
; Edaphic modification
; Functional shift
; Reclamation
; Soil bacteria
Scopus关键词: Ammonia
; Assembly
; Bacteria
; Ecosystems
; Genes
; Lakes
; Land use
; Metabolism
; Nitrates
; Oil fields
; Organic carbon
; Reclamation
; Soil conservation
; Soils
; Wetlands
; Assembly process
; Coastal wetlands
; Edaphic modification
; Functional shift
; Soil bacterium
; Land reclamation
; ammonia
; methane
; nitrate
; organic carbon
; bacterium
; coastal wetland
; conservation
; land reclamation
; land use
; metabolism
; microbial community
; phylogenetics
; salinity
; soil biota
; aquaculture
; Article
; bacterial metabolism
; biological trait
; China
; cluster analysis
; concentration (parameter)
; controlled study
; correlation analysis
; DNA extraction
; high throughput sequencing
; land use
; microbial community
; nonhuman
; oil field
; photosynthesis
; phylogeny
; polymerase chain reaction
; pond
; prediction
; priority journal
; salinity
; sea cucumber
; seashore
; sequence analysis
; soil analysis
; species diversity
; wetland
; China
; Shandong
; Yellow River Delta
; Bacteria (microorganisms)
; Holothuroidea
英文摘要: Coastal reclamation is a global threat to natural ecosystems, disturbing biological community structure, diversity and ecological function through habitat conversion. We have limited insights into the changes brought about by coastal reclamation for different land-use types. We used the Yellow River Delta (YRD) as a model because it is a region with intensive land reclamation, and we investigated the structural and functional variations of bacterial communities and their relations to edaphic properties under different land-use types. Our results showed that the high soil organic carbon (SOC), nitrate concentrations and salinity were found in oil field, aquaculture pond and salt pan, respectively, and low values in natural wetland. Land use was found to have significant influence on bacterial community diversity. To investigate the phylogenetic conservation of specific traits, we analyzed the relationship between soil bacterial assembly processes and edaphic properties. Bacterial traits phylogenetically conserved, and differs in depth. Our findings suggest that SOC served as a deep trait due to it negative correlation with deeper branches of phylogenetic clustering, while nitrate functioned as a shallow trait due to its positive correlation with phylogenetic clustering at finer branches. Soil salinity acted as a complex trait effected on both finer and deeper branches. Further potential functional gene co-occurrence network analysis revealed that land reclamation induced shifts of metabolic function by altering the functional gene connectivity. We found that the photosynthesis pathway was enriched in hub modules related to oil field (OF), while methane metabolism was enriched in hub modules linked to sea cucumber pond (CP1). In addition, two-component systems (TCS) were enriched with nitrate, ammonia, SOC and salinity-related modules. Therefore, our study highlights the importance of integrating multi-function and multi-process identification and prediction of coastal diverse reclamation impacts on coastal ecosystems. © 2020 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158101
Appears in Collections: 气候变化与战略
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作者单位: State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing, 100875, China; Department of Biological Sciences, University of Southern California, Los Angeles, CA, United States
Recommended Citation:
Zou Y.,Yan J.,Hou S.,et al. Intensive land uses modify assembly process and potential metabolic function of edaphic bacterial communities in the Yellow River Delta, China[J]. Science of the Total Environment,2020-01-01,720