Implication of O2 dynamics for both N2O and CH4 emissions from soil during biological soil disinfestation

Abstract Soil O2 dynamics have significant influences on greenhouse gas emissions during soil management practice. In this study, we deployed O2-specific planar optodes to visualize spatiotemporal distribution of O2 in soils treated with biological soil disinfestation (BSD). This study aimed to reve...

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Autores principales:	Chen Wang, Xuehong Ma, Gang Wang, Guitong Li, Kun Zhu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/da2a42d85c1b49ef8b0ddd9ce2826af2
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spelling	oai:doaj.org-article:da2a42d85c1b49ef8b0ddd9ce2826af22021-12-02T17:04:34ZImplication of O2 dynamics for both N2O and CH4 emissions from soil during biological soil disinfestation10.1038/s41598-021-86026-32045-2322https://doaj.org/article/da2a42d85c1b49ef8b0ddd9ce2826af22021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86026-3https://doaj.org/toc/2045-2322Abstract Soil O2 dynamics have significant influences on greenhouse gas emissions during soil management practice. In this study, we deployed O2-specific planar optodes to visualize spatiotemporal distribution of O2 in soils treated with biological soil disinfestation (BSD). This study aimed to reveal the role of anoxia development on emissions of N2O and CH4 from soil amended with crop residues during BSD period. The incorporation of crop residues includes wheat straw only, wheat straw with biochar and early straw incorporation. The anoxia in soil developed very fast within 3 days, while the O2 in headspace decreased much slower and it became anaerobic after 5 days, which was significantly affected by straw and biochar additions. The N2O emissions were positively correlated with soil hypoxic fraction. The CH4 emissions were not significant until the anoxia dominated in both soil and headspace. The co-application of biochar with straw delayed the anoxia development and extended the hypoxic area in soil, resulting in lower emissions of N2O and CH4. Those results highlight that the soil O2 dynamic was the key variable triggering the N2O and CH4 productions. Therefore, detailed information of soil O2 availability could be highly beneficial for optimizing the strategies of organic amendments incorporation in the BSD technique.Chen WangXuehong MaGang WangGuitong LiKun ZhuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Chen Wang Xuehong Ma Gang Wang Guitong Li Kun Zhu Implication of O2 dynamics for both N2O and CH4 emissions from soil during biological soil disinfestation
description	Abstract Soil O2 dynamics have significant influences on greenhouse gas emissions during soil management practice. In this study, we deployed O2-specific planar optodes to visualize spatiotemporal distribution of O2 in soils treated with biological soil disinfestation (BSD). This study aimed to reveal the role of anoxia development on emissions of N2O and CH4 from soil amended with crop residues during BSD period. The incorporation of crop residues includes wheat straw only, wheat straw with biochar and early straw incorporation. The anoxia in soil developed very fast within 3 days, while the O2 in headspace decreased much slower and it became anaerobic after 5 days, which was significantly affected by straw and biochar additions. The N2O emissions were positively correlated with soil hypoxic fraction. The CH4 emissions were not significant until the anoxia dominated in both soil and headspace. The co-application of biochar with straw delayed the anoxia development and extended the hypoxic area in soil, resulting in lower emissions of N2O and CH4. Those results highlight that the soil O2 dynamic was the key variable triggering the N2O and CH4 productions. Therefore, detailed information of soil O2 availability could be highly beneficial for optimizing the strategies of organic amendments incorporation in the BSD technique.
format	article
author	Chen Wang Xuehong Ma Gang Wang Guitong Li Kun Zhu
author_facet	Chen Wang Xuehong Ma Gang Wang Guitong Li Kun Zhu
author_sort	Chen Wang
title	Implication of O2 dynamics for both N2O and CH4 emissions from soil during biological soil disinfestation
title_short	Implication of O2 dynamics for both N2O and CH4 emissions from soil during biological soil disinfestation
title_full	Implication of O2 dynamics for both N2O and CH4 emissions from soil during biological soil disinfestation
title_fullStr	Implication of O2 dynamics for both N2O and CH4 emissions from soil during biological soil disinfestation
title_full_unstemmed	Implication of O2 dynamics for both N2O and CH4 emissions from soil during biological soil disinfestation
title_sort	implication of o2 dynamics for both n2o and ch4 emissions from soil during biological soil disinfestation
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/da2a42d85c1b49ef8b0ddd9ce2826af2
work_keys_str_mv	AT chenwang implicationofo2dynamicsforbothn2oandch4emissionsfromsoilduringbiologicalsoildisinfestation AT xuehongma implicationofo2dynamicsforbothn2oandch4emissionsfromsoilduringbiologicalsoildisinfestation AT gangwang implicationofo2dynamicsforbothn2oandch4emissionsfromsoilduringbiologicalsoildisinfestation AT guitongli implicationofo2dynamicsforbothn2oandch4emissionsfromsoilduringbiologicalsoildisinfestation AT kunzhu implicationofo2dynamicsforbothn2oandch4emissionsfromsoilduringbiologicalsoildisinfestation
_version_	1718381879435984896

Implication of O2 dynamics for both N2O and CH4 emissions from soil during biological soil disinfestation

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