Extreme heat events heighten soil respiration

Abstract In the wake of climate change, extreme events such as heatwaves are considered to be key players in the terrestrial biosphere. In the past decades, the frequency and severity of heatwaves have risen substantially, and they are projected to continue to intensify in the future. One key questi...

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Autores principales:	Hassan Anjileli, Laurie S. Huning, Hamed Moftakhari, Samaneh Ashraf, Ata Akbari Asanjan, Hamid Norouzi, Amir AghaKouchak
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b939a4ca07be48c19c07063ed0f24e18
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spelling	oai:doaj.org-article:b939a4ca07be48c19c07063ed0f24e182021-12-02T14:02:54ZExtreme heat events heighten soil respiration10.1038/s41598-021-85764-82045-2322https://doaj.org/article/b939a4ca07be48c19c07063ed0f24e182021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85764-8https://doaj.org/toc/2045-2322Abstract In the wake of climate change, extreme events such as heatwaves are considered to be key players in the terrestrial biosphere. In the past decades, the frequency and severity of heatwaves have risen substantially, and they are projected to continue to intensify in the future. One key question is therefore: how do changes in extreme heatwaves affect the carbon cycle? Although soil respiration (Rs) is the second largest contributor to the carbon cycle, the impacts of heatwaves on Rs have not been fully understood. Using a unique set of continuous high frequency in-situ measurements from our field site, we characterize the relationship between Rs and heatwaves. We further compare the Rs response to heatwaves across ten additional sites spanning the contiguous United States (CONUS). Applying a probabilistic framework, we conclude that during heatwaves Rs rates increase significantly, on average, by ~ 26% relative to that of non-heatwave conditions over the CONUS. Since previous in-situ observations have not measured the Rs response to heatwaves (e.g., rate, amount) at the high frequency that we present here, the terrestrial feedback to the carbon cycle may be underestimated without capturing these high frequency extreme heatwave events.Hassan AnjileliLaurie S. HuningHamed MoftakhariSamaneh AshrafAta Akbari AsanjanHamid NorouziAmir AghaKouchakNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hassan Anjileli Laurie S. Huning Hamed Moftakhari Samaneh Ashraf Ata Akbari Asanjan Hamid Norouzi Amir AghaKouchak Extreme heat events heighten soil respiration
description	Abstract In the wake of climate change, extreme events such as heatwaves are considered to be key players in the terrestrial biosphere. In the past decades, the frequency and severity of heatwaves have risen substantially, and they are projected to continue to intensify in the future. One key question is therefore: how do changes in extreme heatwaves affect the carbon cycle? Although soil respiration (Rs) is the second largest contributor to the carbon cycle, the impacts of heatwaves on Rs have not been fully understood. Using a unique set of continuous high frequency in-situ measurements from our field site, we characterize the relationship between Rs and heatwaves. We further compare the Rs response to heatwaves across ten additional sites spanning the contiguous United States (CONUS). Applying a probabilistic framework, we conclude that during heatwaves Rs rates increase significantly, on average, by ~ 26% relative to that of non-heatwave conditions over the CONUS. Since previous in-situ observations have not measured the Rs response to heatwaves (e.g., rate, amount) at the high frequency that we present here, the terrestrial feedback to the carbon cycle may be underestimated without capturing these high frequency extreme heatwave events.
format	article
author	Hassan Anjileli Laurie S. Huning Hamed Moftakhari Samaneh Ashraf Ata Akbari Asanjan Hamid Norouzi Amir AghaKouchak
author_facet	Hassan Anjileli Laurie S. Huning Hamed Moftakhari Samaneh Ashraf Ata Akbari Asanjan Hamid Norouzi Amir AghaKouchak
author_sort	Hassan Anjileli
title	Extreme heat events heighten soil respiration
title_short	Extreme heat events heighten soil respiration
title_full	Extreme heat events heighten soil respiration
title_fullStr	Extreme heat events heighten soil respiration
title_full_unstemmed	Extreme heat events heighten soil respiration
title_sort	extreme heat events heighten soil respiration
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b939a4ca07be48c19c07063ed0f24e18
work_keys_str_mv	AT hassananjileli extremeheateventsheightensoilrespiration AT laurieshuning extremeheateventsheightensoilrespiration AT hamedmoftakhari extremeheateventsheightensoilrespiration AT samanehashraf extremeheateventsheightensoilrespiration AT ataakbariasanjan extremeheateventsheightensoilrespiration AT hamidnorouzi extremeheateventsheightensoilrespiration AT amiraghakouchak extremeheateventsheightensoilrespiration
_version_	1718392104685666304

Extreme heat events heighten soil respiration

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