气候变化领域集成服务门户(CCPortal): Soil extracellular enzyme stoichiometry reveals the nutrient limitations in soil microbial metabolism under different carbon input manipulations

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DOI	10.1016/j.scitotenv.2023.169793
	Soil extracellular enzyme stoichiometry reveals the nutrient limitations in soil microbial metabolism under different carbon input manipulations
	Abay, Peryzat; Gong, Lu; Luo, Yan; Zhu, Haiqiang; Ding, Zhaolong
发表日期	2024
ISSN	0048-9697
EISSN	1879-1026
起始页码	913
卷号	913
英文摘要	Changes in the quality and quantity of litter and root inputs due to climate change and human activities can influence below-ground biogeochemical processes in forest ecosystems. However, it is unclear whether and how much aboveground litter and root inputs affect soil microbial metabolism and nutrient limitation mechanisms. In this study, according to a 4-years field manipulation experiment, litter and root manipulations (control (CK), double litter input (DL), no litter (NL), no root (NR), and no inputs (NI)) were set up to analyze the extracellular enzyme activities and stoichiometric ratios characteristics of 0-10 cm and 10-20 cm soils, explore the metabolic limitations of microorganisms, and clarify the main driving factors restricting nutrient limitation. The results showed that the enzyme activities associated with the C cycling (8-1,4-glucosidase (BG), cellulose disaccharide hydrolase (CBH)) and N cycling (8-1,4-N-acetylglucosaminidase (NAG), leucine aminopeptidase (LAP)) in DL treatment were significantly higher than those in NR treatment. Moreover, enzyme activities related to P cycling are significantly higher in comparison to other treatments. The acid phosphatase (AP), which is related to the P cycle, showed the highest activity under NR treatment. In addition, there was no significant difference in soil microbial metabolic limitation by the different carbon inputs, which did not change the original nutrient limitation pattern. The main drivers of microbial nutrient metabolic limitation included soil physicochemical properties, soil total nutrients, and available nutrients, among which soil SWC and pH presented the greatest influence on microbial C limitation and soil total nutrients showed the greatest influence on microbial N limitation. Changes in soil carbon input altered soil extracellular enzyme activities and their stoichiometric ratios by affecting soil physicochemical properties, total nutrients. This study provides data for the understanding of material cycling in forest ecosystems under environmental change.
英文关键词	Litter manipulation; Carbon input; Enzyme activity; Ectoenzyme stoichiometry ratios; Microbial metabolic limitation; Schrenk's spruce forest
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001154340200001
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/304489
作者单位	Xinjiang University
推荐引用方式 GB/T 7714	Abay, Peryzat,Gong, Lu,Luo, Yan,et al. Soil extracellular enzyme stoichiometry reveals the nutrient limitations in soil microbial metabolism under different carbon input manipulations[J],2024,913.
APA	Abay, Peryzat,Gong, Lu,Luo, Yan,Zhu, Haiqiang,&Ding, Zhaolong.(2024).Soil extracellular enzyme stoichiometry reveals the nutrient limitations in soil microbial metabolism under different carbon input manipulations.SCIENCE OF THE TOTAL ENVIRONMENT,913.
MLA	Abay, Peryzat,et al."Soil extracellular enzyme stoichiometry reveals the nutrient limitations in soil microbial metabolism under different carbon input manipulations".SCIENCE OF THE TOTAL ENVIRONMENT 913(2024).