Effects of nitrogen addition on anaerobic oxidation of methane in Zoige Plateau peatlands

Anaerobic oxidation of methane (AOM), an important biological process to reduce global methane emissions to the atmosphere, can utilize methane as an electron donor to reduce sulfate, nitrate, nitrite, iron, manganese, AQDS (9,10-anthraquinone-2,6-disulfonate), etc.; thus, AOM has been a hot topic i...

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Autores principales:	Junxia Liu, Dan Xue, Huai Chen, Ji Hu, Xinya Huang, Jianliang Liu, Xuhui Chen, Liangfeng Liu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Anaerobic oxidation of methane Peatlands Methane Nitrogen addition Different soil layers Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/8bf49bd2daa5455aabac5f7087033b11
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spelling	oai:doaj.org-article:8bf49bd2daa5455aabac5f7087033b112021-12-01T04:58:03ZEffects of nitrogen addition on anaerobic oxidation of methane in Zoige Plateau peatlands1470-160X10.1016/j.ecolind.2021.108018https://doaj.org/article/8bf49bd2daa5455aabac5f7087033b112021-10-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X2100683Xhttps://doaj.org/toc/1470-160XAnaerobic oxidation of methane (AOM), an important biological process to reduce global methane emissions to the atmosphere, can utilize methane as an electron donor to reduce sulfate, nitrate, nitrite, iron, manganese, AQDS (9,10-anthraquinone-2,6-disulfonate), etc.; thus, AOM has been a hot topic in global climate change research in recent years. In addition, nitrogen deposition of terrestrial ecosystems can input more nitrogen to nitrogen-limited peatlands, which could impact the AOM process. However, the effect of nitrogen addition on AOM is not well studied. Here, we investigated the effects of two forms of nitrogen on the vertical distribution (0–100 cm) of AOM in the Zoige peatlands (China) using an anaerobic incubation experiment. The results show that the concentrations of inorganic nitrogen species changed with nitrogen addition, but it did not significantly promote the potential of AOM. The cumulative AOM of treatments without nitrogen (CK) and ammonium chloride (Nred) was 2343.43 ± 18.96 µg·g−1 and 2340.76 ± 16.11 µg·g−1, respectively, which were significantly higher than that of sodium nitrate (Nox) addition treatment (2098.13 ± 13.59 µg·g−1). In addition, the potential of AOM increased with depth, but different soil layers had different responses to the two forms of nitrogen, which could reflect the variable need for different forms of nitrogen in the different soil layers. The soil water content (SWC), dissolved organic carbon (DOC), iron content (Fe3+), and pH played important roles in the potential of AOM in the Zoige peatlands. Overall, our results found that nitrogen addition did not increase the potential of AOM, but instead had an inhibitory effect on it. This study provides a basis for understanding the response of AOM to nitrogen addition in peatlands, which has important implications for global climate change.Junxia LiuDan XueHuai ChenJi HuXinya HuangJianliang LiuXuhui ChenLiangfeng LiuElsevierarticleAnaerobic oxidation of methanePeatlandsMethaneNitrogen additionDifferent soil layersEcologyQH540-549.5ENEcological Indicators, Vol 129, Iss , Pp 108018- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Anaerobic oxidation of methane Peatlands Methane Nitrogen addition Different soil layers Ecology QH540-549.5
spellingShingle	Anaerobic oxidation of methane Peatlands Methane Nitrogen addition Different soil layers Ecology QH540-549.5 Junxia Liu Dan Xue Huai Chen Ji Hu Xinya Huang Jianliang Liu Xuhui Chen Liangfeng Liu Effects of nitrogen addition on anaerobic oxidation of methane in Zoige Plateau peatlands
description	Anaerobic oxidation of methane (AOM), an important biological process to reduce global methane emissions to the atmosphere, can utilize methane as an electron donor to reduce sulfate, nitrate, nitrite, iron, manganese, AQDS (9,10-anthraquinone-2,6-disulfonate), etc.; thus, AOM has been a hot topic in global climate change research in recent years. In addition, nitrogen deposition of terrestrial ecosystems can input more nitrogen to nitrogen-limited peatlands, which could impact the AOM process. However, the effect of nitrogen addition on AOM is not well studied. Here, we investigated the effects of two forms of nitrogen on the vertical distribution (0–100 cm) of AOM in the Zoige peatlands (China) using an anaerobic incubation experiment. The results show that the concentrations of inorganic nitrogen species changed with nitrogen addition, but it did not significantly promote the potential of AOM. The cumulative AOM of treatments without nitrogen (CK) and ammonium chloride (Nred) was 2343.43 ± 18.96 µg·g−1 and 2340.76 ± 16.11 µg·g−1, respectively, which were significantly higher than that of sodium nitrate (Nox) addition treatment (2098.13 ± 13.59 µg·g−1). In addition, the potential of AOM increased with depth, but different soil layers had different responses to the two forms of nitrogen, which could reflect the variable need for different forms of nitrogen in the different soil layers. The soil water content (SWC), dissolved organic carbon (DOC), iron content (Fe3+), and pH played important roles in the potential of AOM in the Zoige peatlands. Overall, our results found that nitrogen addition did not increase the potential of AOM, but instead had an inhibitory effect on it. This study provides a basis for understanding the response of AOM to nitrogen addition in peatlands, which has important implications for global climate change.
format	article
author	Junxia Liu Dan Xue Huai Chen Ji Hu Xinya Huang Jianliang Liu Xuhui Chen Liangfeng Liu
author_facet	Junxia Liu Dan Xue Huai Chen Ji Hu Xinya Huang Jianliang Liu Xuhui Chen Liangfeng Liu
author_sort	Junxia Liu
title	Effects of nitrogen addition on anaerobic oxidation of methane in Zoige Plateau peatlands
title_short	Effects of nitrogen addition on anaerobic oxidation of methane in Zoige Plateau peatlands
title_full	Effects of nitrogen addition on anaerobic oxidation of methane in Zoige Plateau peatlands
title_fullStr	Effects of nitrogen addition on anaerobic oxidation of methane in Zoige Plateau peatlands
title_full_unstemmed	Effects of nitrogen addition on anaerobic oxidation of methane in Zoige Plateau peatlands
title_sort	effects of nitrogen addition on anaerobic oxidation of methane in zoige plateau peatlands
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/8bf49bd2daa5455aabac5f7087033b11
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_version_	1718405673851551744

Effects of nitrogen addition on anaerobic oxidation of methane in Zoige Plateau peatlands

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