Nitrogen addition, rather than altered precipitation, stimulates nitrous oxide emissions in an alpine steppe

Abstract Anthropogenic‐driven global change, including changes in atmospheric nitrogen (N) deposition and precipitation patterns, is dramatically altering N cycling in soil. How long‐term N deposition, precipitation changes, and their interaction influence nitrous oxide (N2O) emissions remains unkno...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Yang Yang, Yuanming Xiao, Changbin Li, Bo Wang, Yongheng Gao, Guoying Zhou
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	climate change functional gene greenhouse gas nitrification Qinghai–Tibetan Plateau Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/d852d99d8e8545fc855f535c54aa84a0
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:d852d99d8e8545fc855f535c54aa84a0
record_format	dspace
spelling	oai:doaj.org-article:d852d99d8e8545fc855f535c54aa84a02021-11-08T17:10:41ZNitrogen addition, rather than altered precipitation, stimulates nitrous oxide emissions in an alpine steppe2045-775810.1002/ece3.8196https://doaj.org/article/d852d99d8e8545fc855f535c54aa84a02021-11-01T00:00:00Zhttps://doi.org/10.1002/ece3.8196https://doaj.org/toc/2045-7758Abstract Anthropogenic‐driven global change, including changes in atmospheric nitrogen (N) deposition and precipitation patterns, is dramatically altering N cycling in soil. How long‐term N deposition, precipitation changes, and their interaction influence nitrous oxide (N2O) emissions remains unknown, especially in the alpine steppes of the Qinghai–Tibetan Plateau (QTP). To fill this knowledge gap, a platform of N addition (10 g m−2 year−1) and altered precipitation (±50% precipitation) experiments was established in an alpine steppe of the QTP in 2013. Long‐term N addition significantly increased N2O emissions. However, neither long‐term alterations in precipitation nor the co‐occurrence of N addition and altered precipitation significantly affected N2O emissions. These unexpected findings indicate that N2O emissions are particularly susceptible to N deposition in the alpine steppes. Our results further indicated that both biotic and abiotic properties had significant effects on N2O emissions. N2O emissions occurred mainly due to nitrification, which was dominated by ammonia‐oxidizing bacteria, rather than ammonia‐oxidizing archaea. Furthermore, the alterations in belowground biomass and soil temperature induced by N addition modulated N2O emissions. Overall, this study provides pivotal insights to aid the prediction of future responses of N2O emissions to long‐term N deposition and precipitation changes in alpine ecosystems. The underlying microbial pathway and key predictors of N2O emissions identified in this study may also be used for future global‐scale model studies.Yang YangYuanming XiaoChangbin LiBo WangYongheng GaoGuoying ZhouWileyarticleclimate changefunctional genegreenhouse gasnitrificationQinghai–Tibetan PlateauEcologyQH540-549.5ENEcology and Evolution, Vol 11, Iss 21, Pp 15153-15163 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	climate change functional gene greenhouse gas nitrification Qinghai–Tibetan Plateau Ecology QH540-549.5
spellingShingle	climate change functional gene greenhouse gas nitrification Qinghai–Tibetan Plateau Ecology QH540-549.5 Yang Yang Yuanming Xiao Changbin Li Bo Wang Yongheng Gao Guoying Zhou Nitrogen addition, rather than altered precipitation, stimulates nitrous oxide emissions in an alpine steppe
description	Abstract Anthropogenic‐driven global change, including changes in atmospheric nitrogen (N) deposition and precipitation patterns, is dramatically altering N cycling in soil. How long‐term N deposition, precipitation changes, and their interaction influence nitrous oxide (N2O) emissions remains unknown, especially in the alpine steppes of the Qinghai–Tibetan Plateau (QTP). To fill this knowledge gap, a platform of N addition (10 g m−2 year−1) and altered precipitation (±50% precipitation) experiments was established in an alpine steppe of the QTP in 2013. Long‐term N addition significantly increased N2O emissions. However, neither long‐term alterations in precipitation nor the co‐occurrence of N addition and altered precipitation significantly affected N2O emissions. These unexpected findings indicate that N2O emissions are particularly susceptible to N deposition in the alpine steppes. Our results further indicated that both biotic and abiotic properties had significant effects on N2O emissions. N2O emissions occurred mainly due to nitrification, which was dominated by ammonia‐oxidizing bacteria, rather than ammonia‐oxidizing archaea. Furthermore, the alterations in belowground biomass and soil temperature induced by N addition modulated N2O emissions. Overall, this study provides pivotal insights to aid the prediction of future responses of N2O emissions to long‐term N deposition and precipitation changes in alpine ecosystems. The underlying microbial pathway and key predictors of N2O emissions identified in this study may also be used for future global‐scale model studies.
format	article
author	Yang Yang Yuanming Xiao Changbin Li Bo Wang Yongheng Gao Guoying Zhou
author_facet	Yang Yang Yuanming Xiao Changbin Li Bo Wang Yongheng Gao Guoying Zhou
author_sort	Yang Yang
title	Nitrogen addition, rather than altered precipitation, stimulates nitrous oxide emissions in an alpine steppe
title_short	Nitrogen addition, rather than altered precipitation, stimulates nitrous oxide emissions in an alpine steppe
title_full	Nitrogen addition, rather than altered precipitation, stimulates nitrous oxide emissions in an alpine steppe
title_fullStr	Nitrogen addition, rather than altered precipitation, stimulates nitrous oxide emissions in an alpine steppe
title_full_unstemmed	Nitrogen addition, rather than altered precipitation, stimulates nitrous oxide emissions in an alpine steppe
title_sort	nitrogen addition, rather than altered precipitation, stimulates nitrous oxide emissions in an alpine steppe
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/d852d99d8e8545fc855f535c54aa84a0
work_keys_str_mv	AT yangyang nitrogenadditionratherthanalteredprecipitationstimulatesnitrousoxideemissionsinanalpinesteppe AT yuanmingxiao nitrogenadditionratherthanalteredprecipitationstimulatesnitrousoxideemissionsinanalpinesteppe AT changbinli nitrogenadditionratherthanalteredprecipitationstimulatesnitrousoxideemissionsinanalpinesteppe AT bowang nitrogenadditionratherthanalteredprecipitationstimulatesnitrousoxideemissionsinanalpinesteppe AT yonghenggao nitrogenadditionratherthanalteredprecipitationstimulatesnitrousoxideemissionsinanalpinesteppe AT guoyingzhou nitrogenadditionratherthanalteredprecipitationstimulatesnitrousoxideemissionsinanalpinesteppe
_version_	1718441522322472960

Nitrogen addition, rather than altered precipitation, stimulates nitrous oxide emissions in an alpine steppe

Ejemplares similares