Compaction stimulates denitrification in an urban park soil using N-15 tracing technique

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 土壤环境科学实验室

	Compaction stimulates denitrification in an urban park soil using N-15 tracing technique
	Li, Shun ; Deng, Huan ; Rensing, Christopher ; Zhu, Yong-Guan
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2014
卷号	21 期号:5 页码:3783-3791
关键词	Compaction Nitrous oxide Denitrification Urban soil
ISSN号	0944-1344
中文摘要	Soils in urban areas are subjected to compaction with accelerating urbanization. The effects of anthropogenic compaction on urban soil denitrification are largely unknown. We conducted a study on an urban park soil to investigate how compaction impacts denitrification. By using N-15 labeling method and acetylene inhibition technique, we performed three coherent incubation experiments to quantify denitrification in compacted soil under both aerobic and anaerobic conditions. Uncompacted soil was set as the control treatment. When monitoring soil incubation without extra substrate, higher nitrous oxide (N2O) flux and denitrification enzyme activity were observed in the compacted soil than in the uncompacted soil. In aerobic incubation with the addition of (KNO3)-N-15, N2O production in the compacted soil reached 10.11 ng N h(-1) g(-1) as compared to 0.02 ng N h(-1) g(-1) in the uncompacted soil. Denitrification contributed 96 % of the emitted N2O in the compacted soil and 36 % of the emitted N2O in the uncompacted soil; total denitrification rate was higher in the compacted soil (up to 79.35 ng N h(-1) g(-1)) than in the uncompacted soil (0.11 ng N h(-1) g(-1)). Under anaerobic incubation with the addition of (KNO3)-N-15, no statistical difference in total N losses and N-15-(N2O+N-2) flux between the uncompacted soil and the compacted soil was detected. Compaction promoted soil denitrification and may impact urban N biogeochemical cycling.
WOS记录号	WOS:000331823000055
公开日期	2015-03-26
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/9641]
专题	生态环境研究中心_土壤环境科学实验室
推荐引用方式 GB/T 7714	Li, Shun,Deng, Huan,Rensing, Christopher,et al. Compaction stimulates denitrification in an urban park soil using N-15 tracing technique[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2014,21(5):3783-3791.
APA	Li, Shun,Deng, Huan,Rensing, Christopher,&Zhu, Yong-Guan.(2014).Compaction stimulates denitrification in an urban park soil using N-15 tracing technique.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,21(5),3783-3791.
MLA	Li, Shun,et al."Compaction stimulates denitrification in an urban park soil using N-15 tracing technique".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 21.5(2014):3783-3791.