Equilibrium in soil respiration across a climosequence indicates its resilience to climate change in a glaciated valley, western Himalaya

Abstract Soil respiration (SR), a natural phenomenon, emits ten times more CO2 from land than anthropogenic sources. It is predicted that climate warming would increase SR in most ecosystems and give rise to positive feedback. However, there are uncertainties associated with this prediction primaril...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Pankaj Tiwari, Pamela Bhattacharya, Gopal Singh Rawat, Gautam Talukdar
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7b3536e7a5534771882478fbfc8e6358
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:7b3536e7a5534771882478fbfc8e6358
record_format	dspace
spelling	oai:doaj.org-article:7b3536e7a5534771882478fbfc8e63582021-12-05T12:13:53ZEquilibrium in soil respiration across a climosequence indicates its resilience to climate change in a glaciated valley, western Himalaya10.1038/s41598-021-02199-x2045-2322https://doaj.org/article/7b3536e7a5534771882478fbfc8e63582021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-02199-xhttps://doaj.org/toc/2045-2322Abstract Soil respiration (SR), a natural phenomenon, emits ten times more CO2 from land than anthropogenic sources. It is predicted that climate warming would increase SR in most ecosystems and give rise to positive feedback. However, there are uncertainties associated with this prediction primarily due to variability in the relationship of SR with its two significant drivers, soil temperature and moisture. Accounting for the variabilities, we use a climosequence in Himalaya with a temperature gradient of ~ 2.1 °C to understand the variations in the response of SR and its temperature sensitivity to climate change. Results indicate an equilibrium in SR ranging from 1.92 to 2.42 µmol m−2 s−1 across an elevation gradient (3300–3900 m) despite its increased sensitivity to temperature (Q10) from 0.47 to 4.97. Additionally, moisture reduction towards lower elevation weakens the temperature-SR relationship. Finally, soil organic carbon shows similarities at all the elevations, indicating a net-zero CO2 flux across the climosequence. The findings suggest that as the climate warms in this region, the temperature sensitivity of SR reduces drastically due to moisture reduction, limiting any change in SR and soil organic carbon to rising temperature. We introduce an equilibrium mechanism in this study which indicates the resilient nature of SR to climate change and will aid in enhancing the accuracy of climate change impact projections.Pankaj TiwariPamela BhattacharyaGopal Singh RawatGautam TalukdarNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Pankaj Tiwari Pamela Bhattacharya Gopal Singh Rawat Gautam Talukdar Equilibrium in soil respiration across a climosequence indicates its resilience to climate change in a glaciated valley, western Himalaya
description	Abstract Soil respiration (SR), a natural phenomenon, emits ten times more CO2 from land than anthropogenic sources. It is predicted that climate warming would increase SR in most ecosystems and give rise to positive feedback. However, there are uncertainties associated with this prediction primarily due to variability in the relationship of SR with its two significant drivers, soil temperature and moisture. Accounting for the variabilities, we use a climosequence in Himalaya with a temperature gradient of ~ 2.1 °C to understand the variations in the response of SR and its temperature sensitivity to climate change. Results indicate an equilibrium in SR ranging from 1.92 to 2.42 µmol m−2 s−1 across an elevation gradient (3300–3900 m) despite its increased sensitivity to temperature (Q10) from 0.47 to 4.97. Additionally, moisture reduction towards lower elevation weakens the temperature-SR relationship. Finally, soil organic carbon shows similarities at all the elevations, indicating a net-zero CO2 flux across the climosequence. The findings suggest that as the climate warms in this region, the temperature sensitivity of SR reduces drastically due to moisture reduction, limiting any change in SR and soil organic carbon to rising temperature. We introduce an equilibrium mechanism in this study which indicates the resilient nature of SR to climate change and will aid in enhancing the accuracy of climate change impact projections.
format	article
author	Pankaj Tiwari Pamela Bhattacharya Gopal Singh Rawat Gautam Talukdar
author_facet	Pankaj Tiwari Pamela Bhattacharya Gopal Singh Rawat Gautam Talukdar
author_sort	Pankaj Tiwari
title	Equilibrium in soil respiration across a climosequence indicates its resilience to climate change in a glaciated valley, western Himalaya
title_short	Equilibrium in soil respiration across a climosequence indicates its resilience to climate change in a glaciated valley, western Himalaya
title_full	Equilibrium in soil respiration across a climosequence indicates its resilience to climate change in a glaciated valley, western Himalaya
title_fullStr	Equilibrium in soil respiration across a climosequence indicates its resilience to climate change in a glaciated valley, western Himalaya
title_full_unstemmed	Equilibrium in soil respiration across a climosequence indicates its resilience to climate change in a glaciated valley, western Himalaya
title_sort	equilibrium in soil respiration across a climosequence indicates its resilience to climate change in a glaciated valley, western himalaya
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/7b3536e7a5534771882478fbfc8e6358
work_keys_str_mv	AT pankajtiwari equilibriuminsoilrespirationacrossaclimosequenceindicatesitsresiliencetoclimatechangeinaglaciatedvalleywesternhimalaya AT pamelabhattacharya equilibriuminsoilrespirationacrossaclimosequenceindicatesitsresiliencetoclimatechangeinaglaciatedvalleywesternhimalaya AT gopalsinghrawat equilibriuminsoilrespirationacrossaclimosequenceindicatesitsresiliencetoclimatechangeinaglaciatedvalleywesternhimalaya AT gautamtalukdar equilibriuminsoilrespirationacrossaclimosequenceindicatesitsresiliencetoclimatechangeinaglaciatedvalleywesternhimalaya
_version_	1718372140170870784

Equilibrium in soil respiration across a climosequence indicates its resilience to climate change in a glaciated valley, western Himalaya

Ejemplares similares