干旱区生态环境知识资源中心(Arid): The diversity and function of microbial community in the sediment and terrestrial area of thermokarst lakes

Arid

DOI	10.1016/j.catena.2023.107505
	The diversity and function of microbial community in the sediment and terrestrial area of thermokarst lakes
	Zhao, Yun-Duo; Hu, Xia
通讯作者	Hu, X
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2023
卷号	233
英文摘要	Thermokarst lakes are widely distributed across the Qinghai-Tibet Plateau (QTP) and have been identified as an important source of greenhouse gases. However, previous studies on soil microbes have mainly focused on the aquatic area of thermokarst lakes, and the changes in microbial communities in the terrestrial area around thermokarst lakes are still unclear. We used high-throughput sequencing to analyse the soil microbial commu-nities in the sediment and terrestrial area around three thermokarst lakes on the QTP. The results showed that the relative abundances of Bacteroidetes and Proteobacteria were high in the sediment areas, while the relative abundances of Actinobacteria and Acidobacteria were high in the terrestrial area around the thermokarst lakes. As the distance from the thermokarst lakes decreases, the alpha-diversity of the microbial communities increased in the mature thermokarst lake (MTL), whereas the alpha-diversity of the microbial communities decreased in the devel-oping thermokarst lake (DTL). The beta-diversity of the microbial communities also varied significantly as the distance from the thermokarst lakes decreases. As the distance from the thermokarst lakes decreases, the abundances of most genes responsible for C decomposition decreased in the MTL and were high in the middle lakeside areas and sediment of the DTL. Soil organic carbon (SOC), total nitrogen (TN), pH, soil water content (SWC) and the pore equivalent diameter were critical factors that affected the microbial community. The mi-crobial richness increased in relatively arid areas (SWC < 60%) and decreased in relatively humid areas (SWC > 60%) as the distance from the thermokarst lakes decreases. These results suggest that the potential C decom-position was high in the far lakeside areas of the MTL and was high in the middle lakeside areas and sediment of the DTL.
英文关键词	Thermokarst lakes Soil bacterial community Carbon decomposition Qinghai -Tibet Plateau
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001084465700001
WOS关键词	QINGHAI-TIBET PLATEAU ; PERMAFROST CARBON ; CLIMATE-CHANGE ; VULNERABILITY ; RIVER ; CH4
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395715
推荐引用方式 GB/T 7714	Zhao, Yun-Duo,Hu, Xia. The diversity and function of microbial community in the sediment and terrestrial area of thermokarst lakes[J],2023,233.
APA	Zhao, Yun-Duo,&Hu, Xia.(2023).The diversity and function of microbial community in the sediment and terrestrial area of thermokarst lakes.CATENA,233.
MLA	Zhao, Yun-Duo,et al."The diversity and function of microbial community in the sediment and terrestrial area of thermokarst lakes".CATENA 233(2023).