Nitrogen inputs are more important than denitrifier abundances in controlling denitrification-derived N2O emission from both urban and agricultural soils

	Nitrogen inputs are more important than denitrifier abundances in controlling denitrification-derived N2O emission from both urban and agricultural soils
	Xu, Hui-Juan 1,2; Yang, Xiao-Ru 1; Li, Shun 1,3; Xue, Xi-Mei 1; Chang, Shuai 4; Li, Hu 1; Singh, Brajesh K.5,6; Su, Jian-Qiang 1; Zhu, Yong-Guan 1,7
	2019-02-10
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	650 页码:2807-2817
摘要	Cities are increasingly being recognized as important contributors in global warming, for example by increasing atmospheric nitrous oxide (N2O). However, urban ecosystems remain poorly understood due to their functional complexity. Further, few studies have documented the microbial processes governing the N2O emissions from urban soils. Here, a field study was performed to assess in situ N2O emissions in an urban and agricultural soil located in Xiamen, China. The mechanisms underlying the difference in N2O emission patterns in both soils were further explored in an incubation experiment. Field investigations showed that N2O emission (3.5-19.0 mu g N2O-N m(-2) h(-1)) from the urban soil was significantly lower than that from the agricultural soil (25.4-18,502.3 mu g N2O-N m(-2) h(-1)). Incubation experiments showed that the urban soil initially emitted lower denitrification-derived N2O because of the lower nirS (encoding nitrite reductases) abundances, whereas overall N2O accumulation during the incubation was mainly controlled by the initial nitrate content in soil. Nitrate addition in a short period (5 days) did not change the total bacterial and denitrifier abundances or the soil bacterial community composition, but significantly altered the relative distribution of some key genera capable of denitrification. Although the urban soil exhibited lower N2O emission than its agricultural counterpart in this study, the expanding urban green areas should be taken into account when building N2O emission reduction targets. (c) 2018 Elsevier B.V. All rights reserved.
关键词	Denitrification Urbanization Nitrous oxide Illumina sequencing Denitrifier
语种	英语
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/63090
专题	中国科学院东亚植物多样性与生物地理学重点实验室
通讯作者	Su, Jian-Qiang
作者单位	1.Chinese Acad Sci, Key Lab Urban Environm & Hlth, Inst Urban Environm, Xiamen 361021, Peoples R China 2.South China Agr Univ, Coll Nat Resources & Environm, Guangzhou 510642, Guangdong, Peoples R China 3.Univ Tubingen, Ctr Appl Geosci, D-72074 Tubingen, Germany 4.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China 5.Univ Western Sydney, Hawkesbury Inst Environm, Penrith, NSW 2751, Australia 6.Univ Western Sydney, Global Ctr Land Based Innovat, Penrith, NSW 2751, Australia 7.Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Xu, Hui-Juan,Yang, Xiao-Ru,Li, Shun,et al. Nitrogen inputs are more important than denitrifier abundances in controlling denitrification-derived N2O emission from both urban and agricultural soils[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,650:2807-2817.
APA	Xu, Hui-Juan.,Yang, Xiao-Ru.,Li, Shun.,Xue, Xi-Mei.,Chang, Shuai.,...&Zhu, Yong-Guan.(2019).Nitrogen inputs are more important than denitrifier abundances in controlling denitrification-derived N2O emission from both urban and agricultural soils.SCIENCE OF THE TOTAL ENVIRONMENT,650,2807-2817.
MLA	Xu, Hui-Juan,et al."Nitrogen inputs are more important than denitrifier abundances in controlling denitrification-derived N2O emission from both urban and agricultural soils".SCIENCE OF THE TOTAL ENVIRONMENT 650(2019):2807-2817.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Xu-2019-Nitrogen inp（2039KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载