干旱区生态环境知识资源中心(Arid): Elevation gradient shapes microbial carbon and phosphorous limitations in the Helan Mountains, Northwest China

Arid

DOI	10.3389/fenvs.2022.1041964
	Elevation gradient shapes microbial carbon and phosphorous limitations in the Helan Mountains, Northwest China
	Wu, Mengyao; Liu, Zhen; Chen, Lin; Pang, Danbo; Xu, Xuelei; Zhang, Yaqi; Ni, Xilu; Hu, Yang; Li, Xuebin
通讯作者	Pang, DB ; Li, XB
来源期刊	FRONTIERS IN ENVIRONMENTAL SCIENCE
EISSN	2296-665X
出版年	2022
卷号	10
英文摘要	Soil extracellular ecoenzymatic activities (EEA) are major players in the biogeochemical cycles and are closely related to the metabolic demand and nutrient supply in microbes. However, their effects on biogeochemistry along the elevation gradient on mountain ecosystems in arid regions remain unclear. To address this, we investigated the variations of soil microbial resource limitation and the relative contributing factors along the elevation gradient of the Helan Mountains, northwest China. The results showed that the relative abundance of total microbial, bacterial, fungal, actinomycetes, and N-acquiring enzymatic activities (N-Acetyl-beta -D-glucosaminidase and Leucine- alpha -aminopeptidase, that are NAG and LAP, respectively) in the soil first increased and then decreased with an increase in elevation. This variation pattern could be due to the changes in soil temperature and moisture along the elevation gradient. Soil enzyme stoichiometry and resource allocation further revealed that the microbial metabolism activity in the Helan Mountains was limited by carbon (C) and phosphorus (P). Furthermore, the two limited elements were significantly higher at the mid and high altitudes (2,139-2,438 m) than at low altitudes (1,380-1,650 m). Additionally, redundancy analysis revealed that the soil water content and bulk density played a crucial role in microbial community structures, while the soil pH had the most influence on soil EEA and ecoenzymatic stoichiometry. Our findings revealed the patterns of soil microbial community structure, extracellular enzyme activities, and microbial metabolism at various elevations, which will help in understanding the microbial resource limitation and nutrient cycling in mountain ecosystems in arid regions.
英文关键词	soil extracellular enzymes enzymatic stoichiometry microbial metabolic limitation mountain ecosystem elevation gradient
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000888995100001
WOS关键词	EXTRACELLULAR ENZYME-ACTIVITIES ; DOMINANT SPECIES IDENTITY ; ECOENZYMATIC STOICHIOMETRY ; ORGANIC-MATTER ; SOIL CARBON ; LITTER DECOMPOSITION ; NUTRIENT ACQUISITION ; NITROGEN DEPOSITION ; FUNGAL BIOMASS ; LOESS PLATEAU
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392724
推荐引用方式 GB/T 7714	Wu, Mengyao,Liu, Zhen,Chen, Lin,et al. Elevation gradient shapes microbial carbon and phosphorous limitations in the Helan Mountains, Northwest China[J],2022,10.
APA	Wu, Mengyao.,Liu, Zhen.,Chen, Lin.,Pang, Danbo.,Xu, Xuelei.,...&Li, Xuebin.(2022).Elevation gradient shapes microbial carbon and phosphorous limitations in the Helan Mountains, Northwest China.FRONTIERS IN ENVIRONMENTAL SCIENCE,10.
MLA	Wu, Mengyao,et al."Elevation gradient shapes microbial carbon and phosphorous limitations in the Helan Mountains, Northwest China".FRONTIERS IN ENVIRONMENTAL SCIENCE 10(2022).