气候变化领域集成服务门户(CCPortal): Changes in Soil Microbial Community during Permafrost Collapse Process on the Northeast Qinghai-Tibetan Plateau, China

CCPortal

DOI	10.1007/s42729-023-01332-1
	Changes in Soil Microbial Community during Permafrost Collapse Process on the Northeast Qinghai-Tibetan Plateau, China
	Hu, Xia; Yang, Zhi-Guang
发表日期	2023
ISSN	0718-9508
EISSN	0718-9516
起始页码	4157
结束页码	4167
卷号	23 期号:3
英文摘要	Due to ongoing climate change, permafrost collapse has become widely distributed across the Qinghai-Tibet Plateau (QTP). However, it is not yet understood how soil microbial composition changes after the development of permafrost collapse. In this study, evaluations were conducted on three stages (the collapsed areas, the collapsing area and the control areas) of the permafrost collapse. The composition and biomass of the soil microorganisms were quantified by the phospholipid fatty acid (PLFA) method. The results showed that the permafrost collapse stages affected the soil microbial communities. The PCA suggested that the soil microbial communities were separated into 3 groups, i.e., the control areas, collapsing areas and collapsed areas. The contents of total PLFAs, gram-negative (GN) bacteria, total bacteria and fungi in the collapsed areas and the collapsing areas were significantly lower than those in the control areas. Soils in the collapsing areas had higher abundance of GN bacteria, total bacteria, total PLFAs and gram-positive bacteria to gram-negative (GP/GN) ratio than those in the collapsed areas. The collapsed areas had a higher ratio of GP/GN among the three stages. The soil microbial communities did not change significantly with increasing soil depth. The contents of GN bacteria, actinomycetes and total PLFAs had a significant positive correlation with pH. The contents of GP bacteria and the GP/GN ratio were positively correlated with soil water content (SWC). Soil microbial biomass decreased significantly during the permafrost collapse development. The inherent characteristics of soil physicochemical properties, especially soil pH and SWC, are the main factors affecting changes in microbial communities after the development of permafrost collapse.
关键词	Soil microbial communities Permafrost collapse Phospholipid fatty acids (PLFAs)Qinghai-Tibet Plateau
英文关键词	CLIMATE-CHANGE; THERMOKARST LAKES; THAW SLUMPS; FATTY-ACIDS; CARBON; BACTERIAL; PATTERNS; FUNGAL; ALPINE; SHIFTS
WOS研究方向	Plant Sciences ; Environmental Sciences ; Soil Science
WOS记录号	WOS:001014951700002
来源期刊	JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283450
作者单位	Beijing Normal University; Beijing Normal University
推荐引用方式 GB/T 7714	Hu, Xia,Yang, Zhi-Guang. Changes in Soil Microbial Community during Permafrost Collapse Process on the Northeast Qinghai-Tibetan Plateau, China[J],2023,23(3).
APA	Hu, Xia,&Yang, Zhi-Guang.(2023).Changes in Soil Microbial Community during Permafrost Collapse Process on the Northeast Qinghai-Tibetan Plateau, China.JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION,23(3).
MLA	Hu, Xia,et al."Changes in Soil Microbial Community during Permafrost Collapse Process on the Northeast Qinghai-Tibetan Plateau, China".JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION 23.3(2023).