干旱区生态环境知识资源中心(Arid): Soil ecoenzymatic stoichiometry reveals microbial phosphorus limitation after vegetation restoration on the Loess Plateau, China

Arid

DOI	10.1016/j.scitotenv.2022.152918
	Soil ecoenzymatic stoichiometry reveals microbial phosphorus limitation after vegetation restoration on the Loess Plateau, China
	Xu, Miaoping; Li, Wenjie; Wang, Jiayi; Zhu, Yufan; Feng, Yongzhong; Yang, Gaihe; Zhang, Wei; Han, Xinhui
通讯作者	Han, XH
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2022
卷号	815
英文摘要	Exploring the limitations of soil microbial nutrient metabolism would help to understand the adaptability and response mechanisms of soil microbes in semi-arid ecosystems. Soil ecoenzymatic stoichiometry is conducive to quantifying the nutrient limitations of microorganisms. To quantify microbial nutrient limitation during plant restoration, we measured soil physicochemical properties, microbial biomass, and the activities of four enzymes (beta-1,4-glucosidase, leucine aminopeptidase,.-1,4-N-acetylglucosaminidase, and alkaline phosphatase) in the soils of the northern Loess Plateau. Vegetation restoration patterns significantly affected soil properties, microbial biomass, enzymatic activity, and associated stoichiometry. Soil enzymatic activity increased significantly after vegetation restoration, especially in Robinia pseudoacacia plantations (RP). Correlation analysis showed that soil nutrients (C and N), moisture and pH were significantly correlated with ecoenzymatic activities and their stoichiometries. Vector-threshold element ratio (VT) model analysis revealed that microbial nutrient metabolism was limited by P, and soil microbial C limitation was significantly weakened after vegetation restoration, particularly in RP. Correlation analysis indicated that microbial nutrient limitations represented by the VT model were significantly correlated with soil moisture, nutrients, and associated stoichiometry. Therefore, the soil microbial community was mainly limited by P rather than N in vegetation restoration on the Loess Plateau via the VT model, and this limitation was primarily associated with the variation in soil properties. In addition, the soil microbial C limitation was significantly negatively correlated with microbial nutrient (P or N) limitation, which illustrated that soil microbial nutrient metabolism has strong stoichiometric homeostasis.
英文关键词	Afforestation Ecoenzymatic activity Vector-threshold element ratio model Homeostasis Microbial nutrient limitation Semi-arid land ecosystem
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000766018900013
WOS关键词	EXTRACELLULAR ENZYME-ACTIVITY ; CNP STOICHIOMETRY ; NUTRIENT ACQUISITION ; LITTER DECOMPOSITION ; BACTERIAL COMMUNITY ; ABANDONED FARMLAND ; ORGANIC-MATTER ; LAND-USE ; NITROGEN ; CARBON
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/2XILL650/394345
推荐引用方式 GB/T 7714	Xu, Miaoping,Li, Wenjie,Wang, Jiayi,et al. Soil ecoenzymatic stoichiometry reveals microbial phosphorus limitation after vegetation restoration on the Loess Plateau, China[J],2022,815.
APA	Xu, Miaoping.,Li, Wenjie.,Wang, Jiayi.,Zhu, Yufan.,Feng, Yongzhong.,...&Han, Xinhui.(2022).Soil ecoenzymatic stoichiometry reveals microbial phosphorus limitation after vegetation restoration on the Loess Plateau, China.SCIENCE OF THE TOTAL ENVIRONMENT,815.
MLA	Xu, Miaoping,et al."Soil ecoenzymatic stoichiometry reveals microbial phosphorus limitation after vegetation restoration on the Loess Plateau, China".SCIENCE OF THE TOTAL ENVIRONMENT 815(2022).