Effects of dicyandiamide and acetylene on N2O emissions and ammonia oxidizers in a fluvo-aquic soil applied with urea

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Effects of dicyandiamide and acetylene on N2O emissions and ammonia oxidizers in a fluvo-aquic soil applied with urea
	Wang, Qing; Zhang, Li-Mei; Shen, Ju-Pei; Du, Shuai; Han, Li-Li; He, Ji-Zheng
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2016-11
卷号	23 期号:22 页码:23023-23033
关键词	Nitrification inhibitor N2O emission amoA gene Net nitrification rate Ammonia-oxidizing bacteria Ammonia-oxidizing archaea
英文摘要	Ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) are crucial for N2O emission as they carry out the key step of nitrification. Dicyandiamide (DCD) and acetylene (C2H2) are typical nitrification inhibitors (NIs), while the comparative effects of these NIs on N2O production and ammonia oxidizers' (AOB and AOA) growth are unclear. Four treatments including a control, urea, urea + DCD, and urea + C2H2 were set up to investigate their effect of inhibiting soil nitrification, nitrification-related N2O emission as well as the growth of ammonia oxidizers with a fluvo-aquic soil using microcosms for 28 days. N2O emission and net nitrification rate increased after the application of urea, but were significantly restrained in urea + NI treatments, while C2H2 was more effective in reducing N2O emission and nitrification rate than DCD. The abundance of AOB, which was significantly correlated with N2O emission and net nitrification rate, was more inhibited by C2H2 than DCD. Furthermore, the application of urea in all the soils had little impact on the AOA community, while obvious shifts of AOB community structure were found compared with the control. All AOB sequences fell within Nitrosospira cluster 3, and the AOA community was clustered to group 1.1b. Collectively, it indicated that application of urea combined with NIs (DCD or C2H2) could potentially alter N2O emission, mainly through regulating the growth of AOB but not AOA in this fluvo-aquic soil.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/35567]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Wang, Qing,Zhang, Li-Mei,Shen, Ju-Pei,et al. Effects of dicyandiamide and acetylene on N2O emissions and ammonia oxidizers in a fluvo-aquic soil applied with urea[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2016,23(22):23023-23033.
APA	Wang, Qing,Zhang, Li-Mei,Shen, Ju-Pei,Du, Shuai,Han, Li-Li,&He, Ji-Zheng.(2016).Effects of dicyandiamide and acetylene on N2O emissions and ammonia oxidizers in a fluvo-aquic soil applied with urea.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,23(22),23023-23033.
MLA	Wang, Qing,et al."Effects of dicyandiamide and acetylene on N2O emissions and ammonia oxidizers in a fluvo-aquic soil applied with urea".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 23.22(2016):23023-23033.