Impacts of long-term nitrogen addition on nitrous oxide in a temperate grassland

Atmospheric nitrogen (N) deposition has increased dramatically due to increased human activities since the industrial revolution. However, it is still unclear what the responses of soil nitrous oxide (N 2 O) is to long-term elevated N deposition in a temperate grassland. Here, we conducted an in sit...

Full description

Saved in:
Bibliographic Details
Published inE3S Web of Conferences Vol. 293; p. 1001
Main Authors Chen, Si, Gao, Tianpeng, Hao, Tianxiang, Li, Kaihui, Liu, Xuejun
Format Journal Article Conference Proceeding
LanguageEnglish
Published Les Ulis EDP Sciences 01.01.2021
Subjects
Atmospheric models
Deposition
Emissions
Grasslands
Multivariate statistical analysis
Nitrogen
Nitrous oxide
Soils
Steppes
Topsoil
Online AccessGet full text

Cover

More Information
Summary:Atmospheric nitrogen (N) deposition has increased dramatically due to increased human activities since the industrial revolution. However, it is still unclear what the responses of soil nitrous oxide (N 2 O) is to long-term elevated N deposition in a temperate grassland. Here, we conducted an in situ field experiment to investigate these responses to long-term high N addition on a temperate steppe in Inner Mongolia, China, from April 2017 to October 2018. Soil N 2 O emissions significantly increased by long-term N addition, use of structural equation modeling (SEM) showed that topsoil (0-5 cm) NH 4 + -N content was the most important limiting factor for N 2 O emission. Our results indicate that long-term high N addition showed a significantly increase in N 2 O emission in this temperate grassland.
ISSN:2267-1242
2555-0403
2267-1242
DOI:10.1051/e3sconf/202129301001