温度和氨氮浓度对水体N<sub>2</sub>O释放的影响

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Abstract

The increase of nitrous oxide emission has become a worldwide problem. The emission of nitrous oxide from water body increased with the increase of N inputs. Our study analyzed the roles of temperature and ammonia in N₂O emission through quantification of nitrogen transformation and related functional genes. The results showed that the abundance of ammonia oxidizing archaea and denitrifiers positively correlated to N₂O emission in water. Structural equation model revealed ammonia content had no direct effect on N₂O emission, however, high temperature and nitrification directly accelerated the release of N₂O. In addition, nitrification process also increased the release of N₂O indirectly through promoting abundance of denitrifiers and nitrite content.

Key words： nitrous oxide temperature nitrification denitrification structural equation mode

Received: 19 June 2018

PACS:

X524

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	Articles by authors
	LU Jun-ling
	CHEN Hui-ping
	XIAO Lin

Cite this article:

LU Jun-ling,CHEN Hui-ping,XIAO Lin. Coupling effect of temperature and ammonia on N₂O emission in surface water[J]. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(1): 330-335.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2019/V39/I1/330

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