干旱区生态环境知识资源中心(Arid): Heavy metal(loid)s shape the soil bacterial community and functional genes of desert grassland in a gold mining area in the semi-arid region

Arid

DOI	10.1016/j.envres.2022.113749
	Heavy metal(loid)s shape the soil bacterial community and functional genes of desert grassland in a gold mining area in the semi-arid region
	Qi, Ran; Xue, Nana; Wang, Shuzhi; Zhou, Xiaobing; Zhao, Li; Song, Wenjuan; Yang, Yuyi
通讯作者	Song, WJ
来源期刊	ENVIRONMENTAL RESEARCH
ISSN	0013-9351
EISSN	1096-0953
出版年	2022
卷号	214
英文摘要	Gold mining can create serious environmental problems, such as soil pollution by heavy metal (loid)s. In this study, we assessed the ecological risk of Hatu gold mining activities and synchronously investigated the bacterial community structure, distribution of soil nutrient-element cycling genes (CNPS) and heavy metal resistance genes (MRG) in adjacent desert grassland soil. The study area was above the moderate risk level, with the ecological risk index (RI) of each sampling site greater than 150. Arsenic, mercury and copper were the main pollutants. Proteobacteria, Actinobacteria and Firmicutes dominated the phyla of the bacterial communities. Species turnover rather than nestedness accounted for the significant differences in community structure among various regions in the mining area. In addition, the bioavailable heavy metal (loid)s (AHM) content had a strong correlation with beta diversity and species turnover of the bacterial community (p < 0.05). No clear difference was found in the total abundance of CNPS genes among various functional regions, but eight specific functional genes were identified from downwind grasslands with lower pollution levels. Among the MRGs, Hg MRG had the highest average total relative abundance, followed by Cu, Co/Zn/Cd and As. The mercury resistance gene subtype hgcAB was positively related to the diversity of the bacterial community, and the bacterial community of grassland soil showed congruency with the MRGs in the Hatu mining area. Total Hg (THg) showed the highest influence affecting the bacterial community, while NH4+-N had the greatest effect on CNPS genes and MRGs. These results highlighted the role of heavy metal (loid)s in shaping the bacterial community and functional genes in arid and semiarid desert grassland soil in gold mining regions.
英文关键词	Gold mine Desert grassland Ecological risk Bacterial community Species turnover Functional genes
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000886362200001
WOS关键词	METAL RESISTANCE GENES ; MICROBIAL COMMUNITIES ; MINE TAILINGS ; BETA-DIVERSITY ; MERCURY ; ACID ; MICROORGANISMS ; DETERMINANTS ; COOCCURRENCE ; TRANSPORT
WOS类目	Environmental Sciences ; Public, Environmental & Occupational Health
WOS研究方向	Environmental Sciences & Ecology ; Public, Environmental & Occupational Health
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392499
推荐引用方式 GB/T 7714	Qi, Ran,Xue, Nana,Wang, Shuzhi,et al. Heavy metal(loid)s shape the soil bacterial community and functional genes of desert grassland in a gold mining area in the semi-arid region[J],2022,214.
APA	Qi, Ran.,Xue, Nana.,Wang, Shuzhi.,Zhou, Xiaobing.,Zhao, Li.,...&Yang, Yuyi.(2022).Heavy metal(loid)s shape the soil bacterial community and functional genes of desert grassland in a gold mining area in the semi-arid region.ENVIRONMENTAL RESEARCH,214.
MLA	Qi, Ran,et al."Heavy metal(loid)s shape the soil bacterial community and functional genes of desert grassland in a gold mining area in the semi-arid region".ENVIRONMENTAL RESEARCH 214(2022).