Biochar amendment reduces paddy soil nitrogen leaching but increases net global warming potential in Ningxia irrigation, China

Abstract The efficacy of biochar as an environmentally friendly agent for non-point source and climate change mitigation remains uncertain. Our goal was to test the impact of biochar amendment on paddy rice nitrogen (N) uptake, soil N leaching, and soil CH4 and N2O fluxes in northwest China. Biochar...

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Autores principales:	Yongsheng Wang, Yansui Liu, Ruliang Liu, Aiping Zhang, Shiqi Yang, Hongyuan Liu, Yang Zhou, Zhengli Yang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/86e3d3b629754f9f87426c12e455db45
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spelling	oai:doaj.org-article:86e3d3b629754f9f87426c12e455db452021-12-02T16:07:49ZBiochar amendment reduces paddy soil nitrogen leaching but increases net global warming potential in Ningxia irrigation, China10.1038/s41598-017-01173-w2045-2322https://doaj.org/article/86e3d3b629754f9f87426c12e455db452017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01173-whttps://doaj.org/toc/2045-2322Abstract The efficacy of biochar as an environmentally friendly agent for non-point source and climate change mitigation remains uncertain. Our goal was to test the impact of biochar amendment on paddy rice nitrogen (N) uptake, soil N leaching, and soil CH4 and N2O fluxes in northwest China. Biochar was applied at four rates (0, 4.5, 9 and13.5 t ha−1 yr−1). Biochar amendment significantly increased rice N uptake, soil total N concentration and the abundance of soil ammonia-oxidizing archaea (AOA), but it significantly reduced the soil NO3 −-N concentration and soil bulk density. Biochar significantly reduced NO3 −-N and NH4 +-N leaching. The C2 and C3 treatments significantly increased the soil CH4 flux and reduced the soil N2O flux, leading to significantly increased net global warming potential (GWP). Soil NO3 −-N rather than NH4 +-N was the key integrator of the soil CH4 and N2O fluxes. Our results indicate that a shift in abundance of the AOA community and increased rice N uptake are closely linked to the reduced soil NO3 −-N concentration under biochar amendment. Furthermore, soil NO3 −-N availability plays an important role in regulating soil inorganic N leaching and net GWP in rice paddies in northwest China.Yongsheng WangYansui LiuRuliang LiuAiping ZhangShiqi YangHongyuan LiuYang ZhouZhengli YangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yongsheng Wang Yansui Liu Ruliang Liu Aiping Zhang Shiqi Yang Hongyuan Liu Yang Zhou Zhengli Yang Biochar amendment reduces paddy soil nitrogen leaching but increases net global warming potential in Ningxia irrigation, China
description	Abstract The efficacy of biochar as an environmentally friendly agent for non-point source and climate change mitigation remains uncertain. Our goal was to test the impact of biochar amendment on paddy rice nitrogen (N) uptake, soil N leaching, and soil CH4 and N2O fluxes in northwest China. Biochar was applied at four rates (0, 4.5, 9 and13.5 t ha−1 yr−1). Biochar amendment significantly increased rice N uptake, soil total N concentration and the abundance of soil ammonia-oxidizing archaea (AOA), but it significantly reduced the soil NO3 −-N concentration and soil bulk density. Biochar significantly reduced NO3 −-N and NH4 +-N leaching. The C2 and C3 treatments significantly increased the soil CH4 flux and reduced the soil N2O flux, leading to significantly increased net global warming potential (GWP). Soil NO3 −-N rather than NH4 +-N was the key integrator of the soil CH4 and N2O fluxes. Our results indicate that a shift in abundance of the AOA community and increased rice N uptake are closely linked to the reduced soil NO3 −-N concentration under biochar amendment. Furthermore, soil NO3 −-N availability plays an important role in regulating soil inorganic N leaching and net GWP in rice paddies in northwest China.
format	article
author	Yongsheng Wang Yansui Liu Ruliang Liu Aiping Zhang Shiqi Yang Hongyuan Liu Yang Zhou Zhengli Yang
author_facet	Yongsheng Wang Yansui Liu Ruliang Liu Aiping Zhang Shiqi Yang Hongyuan Liu Yang Zhou Zhengli Yang
author_sort	Yongsheng Wang
title	Biochar amendment reduces paddy soil nitrogen leaching but increases net global warming potential in Ningxia irrigation, China
title_short	Biochar amendment reduces paddy soil nitrogen leaching but increases net global warming potential in Ningxia irrigation, China
title_full	Biochar amendment reduces paddy soil nitrogen leaching but increases net global warming potential in Ningxia irrigation, China
title_fullStr	Biochar amendment reduces paddy soil nitrogen leaching but increases net global warming potential in Ningxia irrigation, China
title_full_unstemmed	Biochar amendment reduces paddy soil nitrogen leaching but increases net global warming potential in Ningxia irrigation, China
title_sort	biochar amendment reduces paddy soil nitrogen leaching but increases net global warming potential in ningxia irrigation, china
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/86e3d3b629754f9f87426c12e455db45
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Biochar amendment reduces paddy soil nitrogen leaching but increases net global warming potential in Ningxia irrigation, China

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