Influence of environmental factors on autotrophic, soil and ecosystem respirations in Canadian boreal forest

Ecosystem respiration (Reco) and its components, the autotrophic respiration (Ra) and soil respiration (Rs) are the essential indicators of the global carbon cycle. They are represented as functions of either temperature or soil moisture, or a combination of both in the widely-used Earth System Mode...

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Autores principales:	Soumendra N. Bhanja, Junye Wang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Ecosystem respiration Autotrophic respiration Carbon cycle SWAT Root respiration Cold climate region Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/1566e33375894153ba0d8159ff240a0c
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spelling	oai:doaj.org-article:1566e33375894153ba0d8159ff240a0c2021-12-01T04:47:43ZInfluence of environmental factors on autotrophic, soil and ecosystem respirations in Canadian boreal forest1470-160X10.1016/j.ecolind.2021.107517https://doaj.org/article/1566e33375894153ba0d8159ff240a0c2021-06-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21001825https://doaj.org/toc/1470-160XEcosystem respiration (Reco) and its components, the autotrophic respiration (Ra) and soil respiration (Rs) are the essential indicators of the global carbon cycle. They are represented as functions of either temperature or soil moisture, or a combination of both in the widely-used Earth System Models (ESMs). Thus, it is difficult to evaluate the influence of other environmental factors (such as, precipitation, soil temperature, dissolved oxygen level and oxidation reduction potential (ORP)) on Ra, Rs and Reco. Here we introduced microbially mediated, detailed carbon cycle processes within our mechanistic model to address this issue. Dominance analysis using a multivariate approach was performed to find out the influence of individual environmental factors on Ra, Rs and Reco in the cold climate regions of Athabasca River Basin (ARB), Canada. Contribution of the 6 predictor variables, including air temperature, precipitation, soil temperature, water-filled pore space (WFPS) used as a proxy of soil moisture, dissolved oxygen level, and ORP, on Ra, Rs and Reco were estimated based on the R2 values originated from multiple regression analyses. Our results showed that the prevailing temperature (both air and soil) and dissolved oxygen levels are the major influencing factors on Ra, Rs and Reco. WFPS is found to be the least influential factor on respiration estimation. Output of this study can be used to consider the crucial roles of environmental drivers in Ra, Rs and Reco estimation in the development of future ESMs.Soumendra N. BhanjaJunye WangElsevierarticleEcosystem respirationAutotrophic respirationCarbon cycleSWATRoot respirationCold climate regionEcologyQH540-549.5ENEcological Indicators, Vol 125, Iss , Pp 107517- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ecosystem respiration Autotrophic respiration Carbon cycle SWAT Root respiration Cold climate region Ecology QH540-549.5
spellingShingle	Ecosystem respiration Autotrophic respiration Carbon cycle SWAT Root respiration Cold climate region Ecology QH540-549.5 Soumendra N. Bhanja Junye Wang Influence of environmental factors on autotrophic, soil and ecosystem respirations in Canadian boreal forest
description	Ecosystem respiration (Reco) and its components, the autotrophic respiration (Ra) and soil respiration (Rs) are the essential indicators of the global carbon cycle. They are represented as functions of either temperature or soil moisture, or a combination of both in the widely-used Earth System Models (ESMs). Thus, it is difficult to evaluate the influence of other environmental factors (such as, precipitation, soil temperature, dissolved oxygen level and oxidation reduction potential (ORP)) on Ra, Rs and Reco. Here we introduced microbially mediated, detailed carbon cycle processes within our mechanistic model to address this issue. Dominance analysis using a multivariate approach was performed to find out the influence of individual environmental factors on Ra, Rs and Reco in the cold climate regions of Athabasca River Basin (ARB), Canada. Contribution of the 6 predictor variables, including air temperature, precipitation, soil temperature, water-filled pore space (WFPS) used as a proxy of soil moisture, dissolved oxygen level, and ORP, on Ra, Rs and Reco were estimated based on the R2 values originated from multiple regression analyses. Our results showed that the prevailing temperature (both air and soil) and dissolved oxygen levels are the major influencing factors on Ra, Rs and Reco. WFPS is found to be the least influential factor on respiration estimation. Output of this study can be used to consider the crucial roles of environmental drivers in Ra, Rs and Reco estimation in the development of future ESMs.
format	article
author	Soumendra N. Bhanja Junye Wang
author_facet	Soumendra N. Bhanja Junye Wang
author_sort	Soumendra N. Bhanja
title	Influence of environmental factors on autotrophic, soil and ecosystem respirations in Canadian boreal forest
title_short	Influence of environmental factors on autotrophic, soil and ecosystem respirations in Canadian boreal forest
title_full	Influence of environmental factors on autotrophic, soil and ecosystem respirations in Canadian boreal forest
title_fullStr	Influence of environmental factors on autotrophic, soil and ecosystem respirations in Canadian boreal forest
title_full_unstemmed	Influence of environmental factors on autotrophic, soil and ecosystem respirations in Canadian boreal forest
title_sort	influence of environmental factors on autotrophic, soil and ecosystem respirations in canadian boreal forest
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/1566e33375894153ba0d8159ff240a0c
work_keys_str_mv	AT soumendranbhanja influenceofenvironmentalfactorsonautotrophicsoilandecosystemrespirationsincanadianborealforest AT junyewang influenceofenvironmentalfactorsonautotrophicsoilandecosystemrespirationsincanadianborealforest
_version_	1718405709250428928

Influence of environmental factors on autotrophic, soil and ecosystem respirations in Canadian boreal forest

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