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A five-year study of the impact of nitrogen addition on methane uptake in alpine grassland

It remains unclear how nitrogen (N) deposition affects soil methane (CH(4)) uptake in semiarid and arid zones. An in situ field experiment was conducted from 2010 to 2014 to systematically study the effect of various N application rates (0, 10, 30, and 90 kg N ha(−1) yr(−1)) on CH(4) flux in alpine...

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Autores principales: Yue, Ping, Li, Kaihui, Gong, Yanming, Hu, Yukun, Mohammat, Anwar, Christie, Peter, Liu, Xuejun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5004186/
https://www.ncbi.nlm.nih.gov/pubmed/27571892
http://dx.doi.org/10.1038/srep32064
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author Yue, Ping
Li, Kaihui
Gong, Yanming
Hu, Yukun
Mohammat, Anwar
Christie, Peter
Liu, Xuejun
author_facet Yue, Ping
Li, Kaihui
Gong, Yanming
Hu, Yukun
Mohammat, Anwar
Christie, Peter
Liu, Xuejun
author_sort Yue, Ping
collection PubMed
description It remains unclear how nitrogen (N) deposition affects soil methane (CH(4)) uptake in semiarid and arid zones. An in situ field experiment was conducted from 2010 to 2014 to systematically study the effect of various N application rates (0, 10, 30, and 90 kg N ha(−1) yr(−1)) on CH(4) flux in alpine grassland in the Tianshan Mountains. No significant influence of N addition on CH(4) uptake was found. Initially the CH(4) uptake rate increased with increasing N application rate by up to 11.5% in 2011 and then there was gradual inhibition by 2014. However, the between-year variability in CH(4) uptake was very highly significant with average uptake ranging from 52.9 to 106.6 μg C m(−2) h(−1) and the rate depended largely on seasonal variability in precipitation and temperature. CH(4) uptake was positively correlated with soil temperature, air temperature and to a lesser extent with precipitation, and was negatively correlated with soil moisture and NO(3)(−)-N content. The results indicate that between-year variability in CH(4) uptake was impacted by precipitation and temperature and was not sensitive to elevated N deposition in alpine grassland.
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spelling pubmed-50041862016-09-07 A five-year study of the impact of nitrogen addition on methane uptake in alpine grassland Yue, Ping Li, Kaihui Gong, Yanming Hu, Yukun Mohammat, Anwar Christie, Peter Liu, Xuejun Sci Rep Article It remains unclear how nitrogen (N) deposition affects soil methane (CH(4)) uptake in semiarid and arid zones. An in situ field experiment was conducted from 2010 to 2014 to systematically study the effect of various N application rates (0, 10, 30, and 90 kg N ha(−1) yr(−1)) on CH(4) flux in alpine grassland in the Tianshan Mountains. No significant influence of N addition on CH(4) uptake was found. Initially the CH(4) uptake rate increased with increasing N application rate by up to 11.5% in 2011 and then there was gradual inhibition by 2014. However, the between-year variability in CH(4) uptake was very highly significant with average uptake ranging from 52.9 to 106.6 μg C m(−2) h(−1) and the rate depended largely on seasonal variability in precipitation and temperature. CH(4) uptake was positively correlated with soil temperature, air temperature and to a lesser extent with precipitation, and was negatively correlated with soil moisture and NO(3)(−)-N content. The results indicate that between-year variability in CH(4) uptake was impacted by precipitation and temperature and was not sensitive to elevated N deposition in alpine grassland. Nature Publishing Group 2016-08-30 /pmc/articles/PMC5004186/ /pubmed/27571892 http://dx.doi.org/10.1038/srep32064 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Yue, Ping
Li, Kaihui
Gong, Yanming
Hu, Yukun
Mohammat, Anwar
Christie, Peter
Liu, Xuejun
A five-year study of the impact of nitrogen addition on methane uptake in alpine grassland
title A five-year study of the impact of nitrogen addition on methane uptake in alpine grassland
title_full A five-year study of the impact of nitrogen addition on methane uptake in alpine grassland
title_fullStr A five-year study of the impact of nitrogen addition on methane uptake in alpine grassland
title_full_unstemmed A five-year study of the impact of nitrogen addition on methane uptake in alpine grassland
title_short A five-year study of the impact of nitrogen addition on methane uptake in alpine grassland
title_sort five-year study of the impact of nitrogen addition on methane uptake in alpine grassland
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5004186/
https://www.ncbi.nlm.nih.gov/pubmed/27571892
http://dx.doi.org/10.1038/srep32064
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