气候变化领域集成服务门户(CCPortal): Effects of Long-Term Nitrogen Addition and Throughfall Reduction on Extracellular Enzyme Activity and Ecoenzymatic Stoichiometry in a Temperate Forest

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DOI	10.1007/s42729-024-01660-w
	Effects of Long-Term Nitrogen Addition and Throughfall Reduction on Extracellular Enzyme Activity and Ecoenzymatic Stoichiometry in a Temperate Forest
	Huang, Binbin; Xing, Yajuan; Luo, Wei; Yan, Guoyong; Liu, Guancheng; Wang, Xiaochun; Wang, Qinggui
发表日期	2024
ISSN	0718-9508
EISSN	0718-9516
起始页码	24
结束页码	1
卷号	24 期号:1
英文摘要	Soil extracellular enzymes can regulate the decomposition processes of soil organic carbon (SOC). Thus, understanding how extracellular enzyme activity (EEA) and ecoenzymatic stoichiometry respond to altered nitrogen (N) deposition and precipitation patterns may establish a link between changes in soil organic matter and microbial responses in the context of climate change. The long-term field simulation experiments including the control, N deposition (N50, 50 kg center dot ha-1 center dot yr-1), throughfall reduction (TR, - 30%), and their interactions (TR + N50) were built in a temperate forest in 2009. N50 significantly increased all EEAs except leucine aminopeptidase (LAP) and acid phosphatase (ACP). In addition, TR significantly reduced other EEAs except for ACP and polyphenol oxidase (PPO). N50 mainly promotes EEAs by influenced pH, increased SOC, and microbial biomass carbon (MBC). TR inhibited EEAs mainly by reducing soil moisture content (SMC), SOC, and MBC. Furthermore, the positive effects of N50 on EEAs were offset by the negative effects of TR under the interactive of N deposition and penetration reduction. In the control, C acquisition enzyme (C-acq):N acquisition enzyme (N-acq):P acquisition enzyme (P-acq) approximate to 1:1:1, N50, and TR resulted in alterations in the ecoenzymatic stoichiometric equilibrium. Wherein, N50 reduced BG: NAG + LAP but increased BG:ACP and NAG + LAP:ACP. The effect of TR on the ecoenzymatic stoichiometric ratio showed completely opposite to N50. TR + N50 reduced all ecoenzymatic stoichiometric ratios. Our study suggests that pH, SMC, substrate quality, and microbial biomass may be the main drivers for changes in EEAs. Our results elucidate the response mechanism of extracellular enzyme activity to N deposition and precipitation reduction, providing insights into the dynamics of SOC pools in the context of global change. In addition, this study proves that N limitation rather than phosphorus limitation exists in northeast temperate forests, providing a theoretical basis for future forest management.
英文关键词	Long-term nitrogen deposition; Precipitation reduction; Extracellular enzyme activity; Ecoenzymatic stoichiometry; Temperate forest
语种	英语
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Agriculture
WOS类目	Plant Sciences ; Environmental Sciences ; Soil Science
WOS记录号	WOS:001160519800002
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/304531
作者单位	Qufu Normal University; Heilongjiang University; Northeast Forestry University - China
推荐引用方式 GB/T 7714	Huang, Binbin,Xing, Yajuan,Luo, Wei,et al. Effects of Long-Term Nitrogen Addition and Throughfall Reduction on Extracellular Enzyme Activity and Ecoenzymatic Stoichiometry in a Temperate Forest[J],2024,24(1).
APA	Huang, Binbin.,Xing, Yajuan.,Luo, Wei.,Yan, Guoyong.,Liu, Guancheng.,...&Wang, Qinggui.(2024).Effects of Long-Term Nitrogen Addition and Throughfall Reduction on Extracellular Enzyme Activity and Ecoenzymatic Stoichiometry in a Temperate Forest.JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION,24(1).
MLA	Huang, Binbin,et al."Effects of Long-Term Nitrogen Addition and Throughfall Reduction on Extracellular Enzyme Activity and Ecoenzymatic Stoichiometry in a Temperate Forest".JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION 24.1(2024).