气候变化领域集成服务门户(CCPortal): Determination of N2O reduction to N2 from manure-amended soil based on isotopocule mapping and acetylene inhibition

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DOI	10.1016/j.atmosenv.2020.117913
	Determination of N2O reduction to N2 from manure-amended soil based on isotopocule mapping and acetylene inhibition
	Lin W.; Ding J.; Li Y.; Zheng Q.; Zhuang S.; Zhang D.; Zhou W.; Qi Z.; Li Y.
发表日期	2021
ISSN	1352-2310
卷号	244
英文摘要	The quantification of N2O reduction during denitrification is crucial to take measures reducing N2O emissions from arable soils. The analysis of site specific N2O isotopic composition may help to quantify the pathway of N2O reduction to N2 during denitrification process. In manure-amended soil (chicken manure, cow manure and sheep manure), N2O reduction was evaluated by examining the N2O emissions in the presence of acetylene (C2H2) and by analyzing the N2O isotopocule deltas. The results indicated that the three manures had no significant differences for the N2O emission rates and N2O isotopocule deltas. The extent of N2O reduction to N2 was 81–84% using the mapping of Δδ18O(N2O-H2O/N2O-NO3-) (different value of δ18O between the N2O and H2O or NO3−) vs. SP (15N site preference in N2O) and approximately 76% using C2H2 (10% v/v) inhibition method under 60% WFPS (water–filled pore space). Moreover, complete N2O reduction held η18OR and SPR (net isotopocule effect of N2O reduction to N2) values of −13.6‰ and −6.7‰, respectively. It was also found that oxygen exchange between N2O and soil water was approximately 92%. In summary, the mapping of Δδ18O(N2O-H2O/N2O-NO3-) vs. SP was very useful to distinguish the production and consumption pathways of N2O during denitrification. The extent of N2O reduction was underestimated by the C2H2 method. These results provide guidance in correcting the acetylene effect, which is important in evaluating the impact of manure on the N2O reduction. © 2020 Elsevier Ltd
关键词	Acetylene inhibition Denitrification Manure N2O reduction The mapping of Δδ18O(N2O-H2O/N2O-NO3-) vs. SP
语种	英语
scopus关键词	Acetylene; Denitrification; Fertilizers; Lighting; Manures; Mapping; Soil moisture; Denitrification process; Inhibition methods; Isotopic composition; Manure-amended soils; Oxygen exchange; Production and consumption; Provide guidances; Site preferences; Reduction; acetylene; nitrogen; nitrous oxide; organic fertilizer; acetylene; agricultural soil; denitrification; inhibition; isotopic composition; manure; nitrogen; nitrous oxide; reduction; soil amendment; soil emission; soil water; analytic method; Article; carbon footprint; cow; denitrification; isotope analysis; manure; nonhuman; poultry manure; priority journal; sheep; soil amendment; soil analysis; Ovis aries
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248867
作者单位	Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu, 610213, China; Key Laboratory of Dryland Agriculture, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China; Environmental Stable Isotope Lab., Chinese Academy of Agricultural Sciences, Beijing, 100081, China
推荐引用方式 GB/T 7714	Lin W.,Ding J.,Li Y.,et al. Determination of N2O reduction to N2 from manure-amended soil based on isotopocule mapping and acetylene inhibition[J],2021,244.
APA	Lin W..,Ding J..,Li Y..,Zheng Q..,Zhuang S..,...&Li Y..(2021).Determination of N2O reduction to N2 from manure-amended soil based on isotopocule mapping and acetylene inhibition.ATMOSPHERIC ENVIRONMENT,244.
MLA	Lin W.,et al."Determination of N2O reduction to N2 from manure-amended soil based on isotopocule mapping and acetylene inhibition".ATMOSPHERIC ENVIRONMENT 244(2021).