干旱区生态环境知识资源中心(Arid): Soil extracellular enzyme activity reflects the change of nitrogen to phosphorus limitation of microorganisms during vegetation restoration in semi-arid sandy land of northern China

Arid

DOI	10.3389/fenvs.2023.1298027
	Soil extracellular enzyme activity reflects the change of nitrogen to phosphorus limitation of microorganisms during vegetation restoration in semi-arid sandy land of northern China
	Yao, Bo; Wang, Xuyang; Li, Yuqiang; Lian, Jie; Li, Yuqian; Luo, Yayong; Li, Yulin
通讯作者	Wang, XY ; Li, YL
来源期刊	FRONTIERS IN ENVIRONMENTAL SCIENCE
EISSN	2296-665X
出版年	2023
卷号	11
英文摘要	Soil extracellular enzyme activity (EEA) and enzyme stoichiometry are indicators of soil nutrient availability and microbial substrate limitation. However, the patterns in soil enzyme activities and stoichiometry, and their key drivers remain unclear during vegetation restoration in degraded sandy land. Here, soil ecosystems at five restoration stages of degraded sandy land were selected for investigation and we quantified the microbial nutrient limitation using EEA stoichiometry. The average C:N:P ratio for the nutrient-acquisition enzymes was 1:0.88:0.86, which differed from the global ratio of 1:1:1, indicating stronger microbial C limitation than N or P limitation. With vegetation restoration, the enzyme N:P ratio decreased, but the angle term used in vector analysis increased, indicating that the restored grassland transitioned from N-restricted (angle < 45 degrees) to P-restricted (angle > 45 degrees). Plant C inputs increased the soil nutrient content and significantly decreased the microbial C and N limitation but increased P limitation due to nutrient competition between plants and soil microorganisms. Decreased soil water levels caused by vegetation transpiration may have shifted the microbial limitation from N to P. The decreased fungi:bacteria ratio strengthened the microbial C and N or P limitations. On the basis of these findings, as measures to alleviate the associated nutrient limitations, we would recommend supplementation with phosphorus in the potential and slight stages of rocky desertification and the supplementary application of nitrogen in the moderate and severe stages during the restoration of degraded sandy ecosystems.
英文关键词	sandy ecosystem soil extracellular enzyme stoichiometry nutrient limitation microbial biomass microbial community
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:001103597900001
WOS关键词	LOESS PLATEAU ; ECOENZYMATIC STOICHIOMETRY ; MICROBIAL BIOMASS ; ORGANIC-CARBON ; LITTER DECOMPOSITION ; NUTRIENT ACQUISITION ; FUNCTIONAL DIVERSITY ; EXTRACTION METHOD ; PLANT DIVERSITY ; P STOICHIOMETRY
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/2XILL650/396530
推荐引用方式 GB/T 7714	Yao, Bo,Wang, Xuyang,Li, Yuqiang,et al. Soil extracellular enzyme activity reflects the change of nitrogen to phosphorus limitation of microorganisms during vegetation restoration in semi-arid sandy land of northern China[J],2023,11.
APA	Yao, Bo.,Wang, Xuyang.,Li, Yuqiang.,Lian, Jie.,Li, Yuqian.,...&Li, Yulin.(2023).Soil extracellular enzyme activity reflects the change of nitrogen to phosphorus limitation of microorganisms during vegetation restoration in semi-arid sandy land of northern China.FRONTIERS IN ENVIRONMENTAL SCIENCE,11.
MLA	Yao, Bo,et al."Soil extracellular enzyme activity reflects the change of nitrogen to phosphorus limitation of microorganisms during vegetation restoration in semi-arid sandy land of northern China".FRONTIERS IN ENVIRONMENTAL SCIENCE 11(2023).