Uncertainty of methane emissions coming from the physical volume of plant biomass inside the closed chamber was negligible during cropping period.

In rice paddy, the closed chamber method is broadly used to estimate methane (CH4) emission rate. Since rice plants can significantly affect CH4 production, oxidation and emission, rice plantation inside the chamber is standardized in IPCC guidelines. Methane emission rate is calculated using the in...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Ji Yeon Lim, Song Rae Cho, Gil Won Kim, Pil Joo Kim, Seung Tak Jeong
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2b3286b8cf294a2385ef23ff25f5dabe
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:2b3286b8cf294a2385ef23ff25f5dabe
record_format	dspace
spelling	oai:doaj.org-article:2b3286b8cf294a2385ef23ff25f5dabe2021-12-02T20:14:31ZUncertainty of methane emissions coming from the physical volume of plant biomass inside the closed chamber was negligible during cropping period.1932-620310.1371/journal.pone.0256796https://doaj.org/article/2b3286b8cf294a2385ef23ff25f5dabe2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0256796https://doaj.org/toc/1932-6203In rice paddy, the closed chamber method is broadly used to estimate methane (CH4) emission rate. Since rice plants can significantly affect CH4 production, oxidation and emission, rice plantation inside the chamber is standardized in IPCC guidelines. Methane emission rate is calculated using the increased concentration inside the headspace. Biomass growth might decrease the headspace volume, and thus CH4 emission rates might be overestimated. To evaluate the influence of chamber headspace decreased by rice plant development on CH4 emission rates, five Korean rice cultivars were cultivated in a typical rice paddy, and physical volume changes in rice biomass were assayed using water displacement method. The recommended acrylic closed chambers (H. 1.2 m x W. 0.6 m x L. 0.6 m) were installed, and eight rice plants were transplanted inside the chamber with the same space interval with the outside. Biomass growth significantly decreased the headspace volume of the chamber. However, this volume covered only 0.48-0.55% of the closed chamber volume at the maximum growth stage. During the whole cropping period, mean 0.24-0.28% of chamber headspace was allocated by plant biomass, and thus this level of total CH4 emissions was overestimated. However, this overestimation was much smaller than the errors coming from other investigation processes (i.e., chamber closing hour, temperature recording, inconstant flooding level, different soil environments, etc.) and rice physiological changes. In conclusion, the influence of physical biomass volume inside the closed chamber was negligible to make the error in total CH4 emission assessment in rice paddies.Ji Yeon LimSong Rae ChoGil Won KimPil Joo KimSeung Tak JeongPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 9, p e0256796 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ji Yeon Lim Song Rae Cho Gil Won Kim Pil Joo Kim Seung Tak Jeong Uncertainty of methane emissions coming from the physical volume of plant biomass inside the closed chamber was negligible during cropping period.
description	In rice paddy, the closed chamber method is broadly used to estimate methane (CH4) emission rate. Since rice plants can significantly affect CH4 production, oxidation and emission, rice plantation inside the chamber is standardized in IPCC guidelines. Methane emission rate is calculated using the increased concentration inside the headspace. Biomass growth might decrease the headspace volume, and thus CH4 emission rates might be overestimated. To evaluate the influence of chamber headspace decreased by rice plant development on CH4 emission rates, five Korean rice cultivars were cultivated in a typical rice paddy, and physical volume changes in rice biomass were assayed using water displacement method. The recommended acrylic closed chambers (H. 1.2 m x W. 0.6 m x L. 0.6 m) were installed, and eight rice plants were transplanted inside the chamber with the same space interval with the outside. Biomass growth significantly decreased the headspace volume of the chamber. However, this volume covered only 0.48-0.55% of the closed chamber volume at the maximum growth stage. During the whole cropping period, mean 0.24-0.28% of chamber headspace was allocated by plant biomass, and thus this level of total CH4 emissions was overestimated. However, this overestimation was much smaller than the errors coming from other investigation processes (i.e., chamber closing hour, temperature recording, inconstant flooding level, different soil environments, etc.) and rice physiological changes. In conclusion, the influence of physical biomass volume inside the closed chamber was negligible to make the error in total CH4 emission assessment in rice paddies.
format	article
author	Ji Yeon Lim Song Rae Cho Gil Won Kim Pil Joo Kim Seung Tak Jeong
author_facet	Ji Yeon Lim Song Rae Cho Gil Won Kim Pil Joo Kim Seung Tak Jeong
author_sort	Ji Yeon Lim
title	Uncertainty of methane emissions coming from the physical volume of plant biomass inside the closed chamber was negligible during cropping period.
title_short	Uncertainty of methane emissions coming from the physical volume of plant biomass inside the closed chamber was negligible during cropping period.
title_full	Uncertainty of methane emissions coming from the physical volume of plant biomass inside the closed chamber was negligible during cropping period.
title_fullStr	Uncertainty of methane emissions coming from the physical volume of plant biomass inside the closed chamber was negligible during cropping period.
title_full_unstemmed	Uncertainty of methane emissions coming from the physical volume of plant biomass inside the closed chamber was negligible during cropping period.
title_sort	uncertainty of methane emissions coming from the physical volume of plant biomass inside the closed chamber was negligible during cropping period.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/2b3286b8cf294a2385ef23ff25f5dabe
work_keys_str_mv	AT jiyeonlim uncertaintyofmethaneemissionscomingfromthephysicalvolumeofplantbiomassinsidetheclosedchamberwasnegligibleduringcroppingperiod AT songraecho uncertaintyofmethaneemissionscomingfromthephysicalvolumeofplantbiomassinsidetheclosedchamberwasnegligibleduringcroppingperiod AT gilwonkim uncertaintyofmethaneemissionscomingfromthephysicalvolumeofplantbiomassinsidetheclosedchamberwasnegligibleduringcroppingperiod AT piljookim uncertaintyofmethaneemissionscomingfromthephysicalvolumeofplantbiomassinsidetheclosedchamberwasnegligibleduringcroppingperiod AT seungtakjeong uncertaintyofmethaneemissionscomingfromthephysicalvolumeofplantbiomassinsidetheclosedchamberwasnegligibleduringcroppingperiod
_version_	1718374635198742528

Uncertainty of methane emissions coming from the physical volume of plant biomass inside the closed chamber was negligible during cropping period.

Ejemplares similares