Drivers of carbon fluxes in Alpine tundra: a comparison of three empirical model approaches
This pre-print paper illustrate experimental work and the data analysisconducted in Gran Paradiso National Park, Italy, by researchers of the Institute of Geoscience and Earth Resources of The National Research Council of Italy in the framework of the H2020 project ECOPOTENTIAL (www.ecopotential-pro...
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ftzenodo:oai:zenodo.org:3778164 2024-09-15T18:39:53+00:00 Drivers of carbon fluxes in Alpine tundra: a comparison of three empirical model approaches Marta Magnani Ilaria Baneschi Mariasilvia Giamberini Pietro Mosca Brunella Raco Antonello Provenzale 2020-04-30 https://doi.org/10.5281/zenodo.3778164 eng eng Zenodo http://arxiv.org/abs/2004.14262 https://zenodo.org/communities/ecopotentialh2020 https://zenodo.org/communities/igg-cnr-czo https://zenodo.org/communities/eu https://doi.org/10.5281/zenodo.3778163 https://doi.org/10.5281/zenodo.3778164 oai:zenodo.org:3778164 info:eu-repo/semantics/openAccess Creative Commons Attribution 1.0 Generic https://creativecommons.org/licenses/by/1.0/legalcode Critical Zone modelling carbon dioxide fluxes Alpine grasslands Mountains statistical data analysis ECOPOTENTIAL info:eu-repo/semantics/preprint 2020 ftzenodo https://doi.org/10.5281/zenodo.377816410.5281/zenodo.3778163 2024-07-26T21:22:25Z This pre-print paper illustrate experimental work and the data analysisconducted in Gran Paradiso National Park, Italy, by researchers of the Institute of Geoscience and Earth Resources of The National Research Council of Italy in the framework of the H2020 project ECOPOTENTIAL (www.ecopotential-project.eu), regarding the CO 2 fluxes on high- altitude Alpine grasslands at Nivolet Plain (about 2700 m a.s.l.). Measurements of Net Ecosystem Exchange (NEE) and Ecosystem Respiration (ER) and other environmental variables have been conducted in three sampling sites belonging to the same catchment during 2017, 2018, 2019 summer seasons, using a portable accumulation chamber. In the paper,we propose a comparison of three empirical modelling approaches using systematic statistical analysis, to identify the environmental variables controlling CO 2 fluxes. Large year-to-year variations in the gross primary production (GPP) and ecosystem respiration (ER) dependences on solar irradiance and temperature were observed,. We thus implemented a multi regression model in which additional variables were introduced as perturbations of the standard exponential and rectangular hyperbolic functions for ER and GPP, respectively. A comparison of this model with other common modelling strategies, showed the benefits of this approach, resulting in large explained variances (83% to 94%). The optimum ensemble of variables explaining the inter- and intra-annual flux variability included solar irradiance, soil moisture and day of the year for GPP, and air temperature, soil moisture, air pressure and day of the year for the ER, in agreement with other studies. The modelling approach discussed provides a basis for selecting drivers of carbon fluxes and understanding their role in high-altitude Alpine ecosystems, also allowing for future short-range assessments of local trends Report Tundra Zenodo |
institution |
Open Polar |
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Zenodo |
op_collection_id |
ftzenodo |
language |
English |
topic |
Critical Zone modelling carbon dioxide fluxes Alpine grasslands Mountains statistical data analysis ECOPOTENTIAL |
spellingShingle |
Critical Zone modelling carbon dioxide fluxes Alpine grasslands Mountains statistical data analysis ECOPOTENTIAL Marta Magnani Ilaria Baneschi Mariasilvia Giamberini Pietro Mosca Brunella Raco Antonello Provenzale Drivers of carbon fluxes in Alpine tundra: a comparison of three empirical model approaches |
topic_facet |
Critical Zone modelling carbon dioxide fluxes Alpine grasslands Mountains statistical data analysis ECOPOTENTIAL |
description |
This pre-print paper illustrate experimental work and the data analysisconducted in Gran Paradiso National Park, Italy, by researchers of the Institute of Geoscience and Earth Resources of The National Research Council of Italy in the framework of the H2020 project ECOPOTENTIAL (www.ecopotential-project.eu), regarding the CO 2 fluxes on high- altitude Alpine grasslands at Nivolet Plain (about 2700 m a.s.l.). Measurements of Net Ecosystem Exchange (NEE) and Ecosystem Respiration (ER) and other environmental variables have been conducted in three sampling sites belonging to the same catchment during 2017, 2018, 2019 summer seasons, using a portable accumulation chamber. In the paper,we propose a comparison of three empirical modelling approaches using systematic statistical analysis, to identify the environmental variables controlling CO 2 fluxes. Large year-to-year variations in the gross primary production (GPP) and ecosystem respiration (ER) dependences on solar irradiance and temperature were observed,. We thus implemented a multi regression model in which additional variables were introduced as perturbations of the standard exponential and rectangular hyperbolic functions for ER and GPP, respectively. A comparison of this model with other common modelling strategies, showed the benefits of this approach, resulting in large explained variances (83% to 94%). The optimum ensemble of variables explaining the inter- and intra-annual flux variability included solar irradiance, soil moisture and day of the year for GPP, and air temperature, soil moisture, air pressure and day of the year for the ER, in agreement with other studies. The modelling approach discussed provides a basis for selecting drivers of carbon fluxes and understanding their role in high-altitude Alpine ecosystems, also allowing for future short-range assessments of local trends |
format |
Report |
author |
Marta Magnani Ilaria Baneschi Mariasilvia Giamberini Pietro Mosca Brunella Raco Antonello Provenzale |
author_facet |
Marta Magnani Ilaria Baneschi Mariasilvia Giamberini Pietro Mosca Brunella Raco Antonello Provenzale |
author_sort |
Marta Magnani |
title |
Drivers of carbon fluxes in Alpine tundra: a comparison of three empirical model approaches |
title_short |
Drivers of carbon fluxes in Alpine tundra: a comparison of three empirical model approaches |
title_full |
Drivers of carbon fluxes in Alpine tundra: a comparison of three empirical model approaches |
title_fullStr |
Drivers of carbon fluxes in Alpine tundra: a comparison of three empirical model approaches |
title_full_unstemmed |
Drivers of carbon fluxes in Alpine tundra: a comparison of three empirical model approaches |
title_sort |
drivers of carbon fluxes in alpine tundra: a comparison of three empirical model approaches |
publisher |
Zenodo |
publishDate |
2020 |
url |
https://doi.org/10.5281/zenodo.3778164 |
genre |
Tundra |
genre_facet |
Tundra |
op_relation |
http://arxiv.org/abs/2004.14262 https://zenodo.org/communities/ecopotentialh2020 https://zenodo.org/communities/igg-cnr-czo https://zenodo.org/communities/eu https://doi.org/10.5281/zenodo.3778163 https://doi.org/10.5281/zenodo.3778164 oai:zenodo.org:3778164 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 1.0 Generic https://creativecommons.org/licenses/by/1.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.377816410.5281/zenodo.3778163 |
_version_ |
1810484225465384960 |