Can abandoned peatland pasture sequestrate more carbon dioxide from the atmosphere than an adjacent pristine bog in Newfoundland, Canada?
Net ecosystem exchange of carbon dioxide (NEE) and its components, gross primary productivity (GPP) and ecosystem respiration (ER), were compared between a bog and an abandoned peatland pasture within the same peatland complex in western Newfoundland, Canada. Measurements based on the eddy covarianc...
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Language: | English |
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Online Access: | http://ir.imde.ac.cn/handle/131551/22662 https://doi.org/10.1016/j.agrformet.2017.09.010 |
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ftchinacadscimhe:oai:ir.imde.ac.cn:131551/22662 2023-05-15T17:22:22+02:00 Can abandoned peatland pasture sequestrate more carbon dioxide from the atmosphere than an adjacent pristine bog in Newfoundland, Canada? Wang, Mei Wu, Jianghua Lafleur, Peter M. Luan, Junwei Chen, Huai Zhu, Xinbiao 2018-01-15 http://ir.imde.ac.cn/handle/131551/22662 https://doi.org/10.1016/j.agrformet.2017.09.010 英语 eng ELSEVIER SCIENCE BV AGRICULTURAL AND FOREST METEOROLOGY http://ir.imde.ac.cn/handle/131551/22662 doi:10.1016/j.agrformet.2017.09.010 Boreal bog Eddy covariance CO2 fluxes Abandoned peatland pasture Agricultural management Climate change NET ECOSYSTEM EXCHANGE GREENHOUSE-GAS BALANCES BOREAL ORGANIC SOIL LAND-USE CHANGE CO2 EXCHANGE TEMPERATE PEATLAND MICROMETEOROLOGICAL TECHNIQUES INTERANNUAL VARIABILITY NORTHERN PEATLAND WATER-TABLE Agriculture Forestry Meteorology & Atmospheric Sciences Agronomy 期刊论文 2018 ftchinacadscimhe https://doi.org/10.1016/j.agrformet.2017.09.010 2022-12-19T18:20:31Z Net ecosystem exchange of carbon dioxide (NEE) and its components, gross primary productivity (GPP) and ecosystem respiration (ER), were compared between a bog and an abandoned peatland pasture within the same peatland complex in western Newfoundland, Canada. Measurements based on the eddy covariance technique from April 2014 to April 2016 were used to examine the influence of agricultural management and abandonment on peatland carbon dioxide (CO2) exchange. NEE, GPP and ER at both sites showed pronounced seasonal variation, peaking near the middle growing season. The maximum net CO2 uptake rate of -28.61 mu mol m(-2) s(-1) and emission rate of 14.39 mu mol m(-2) s(-1) at the pasture were significantly higher than those at the bog (-9.67 mu mol m(-2) s(-1) and 5.50 mu mol m(-2) s(-1), respectively). Daytime average GPP was related to photosynthetic photon flux density and air temperature and the nighttime average ER decreased with soil water content, but increased with surface soil temperature for both sites. Annual NEE of the pasture (-128 +/- 60 g C m(-2) yr(-1) in 2014-15 and -124 +/- 56 g C m(-2) yr(-1) in 2015-16) was considerably larger than that of the bog (-46 +/- 36 g C m(-2) yr(-1) in 2014-15). GPP of 1086 +/- 141 g C m(-2) yr(-1) in 2014-15 and 982 +/- 123 g C m(-2) yr(-1) in 2015-16 and ER of 957 129 g C m(-2) yr(-1) in 2014-15 and 858 +/- 112 g C m(-2) yr(-1) in 2015-16 at the pasture were approximately twice the magnitude of the corresponding fluxes at the bog. The difference in GPP between the bog and pasture was mainly related to their different aboveground biomass. Higher ER at the pasture was probably related to its lower water table depth, greater substrate availability and higher autotrophic respiration. Unlike previous findings that managed peat lands are large CO2 emitters, our results suggest that abandoned peatland pastures can function like natural grasslands and sequester considerable amounts of CO2 from the atmosphere. Report Newfoundland IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) Canada Agricultural and Forest Meteorology 248 91 108 |
institution |
Open Polar |
collection |
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadscimhe |
language |
English |
topic |
Boreal bog Eddy covariance CO2 fluxes Abandoned peatland pasture Agricultural management Climate change NET ECOSYSTEM EXCHANGE GREENHOUSE-GAS BALANCES BOREAL ORGANIC SOIL LAND-USE CHANGE CO2 EXCHANGE TEMPERATE PEATLAND MICROMETEOROLOGICAL TECHNIQUES INTERANNUAL VARIABILITY NORTHERN PEATLAND WATER-TABLE Agriculture Forestry Meteorology & Atmospheric Sciences Agronomy |
spellingShingle |
Boreal bog Eddy covariance CO2 fluxes Abandoned peatland pasture Agricultural management Climate change NET ECOSYSTEM EXCHANGE GREENHOUSE-GAS BALANCES BOREAL ORGANIC SOIL LAND-USE CHANGE CO2 EXCHANGE TEMPERATE PEATLAND MICROMETEOROLOGICAL TECHNIQUES INTERANNUAL VARIABILITY NORTHERN PEATLAND WATER-TABLE Agriculture Forestry Meteorology & Atmospheric Sciences Agronomy Wang, Mei Wu, Jianghua Lafleur, Peter M. Luan, Junwei Chen, Huai Zhu, Xinbiao Can abandoned peatland pasture sequestrate more carbon dioxide from the atmosphere than an adjacent pristine bog in Newfoundland, Canada? |
topic_facet |
Boreal bog Eddy covariance CO2 fluxes Abandoned peatland pasture Agricultural management Climate change NET ECOSYSTEM EXCHANGE GREENHOUSE-GAS BALANCES BOREAL ORGANIC SOIL LAND-USE CHANGE CO2 EXCHANGE TEMPERATE PEATLAND MICROMETEOROLOGICAL TECHNIQUES INTERANNUAL VARIABILITY NORTHERN PEATLAND WATER-TABLE Agriculture Forestry Meteorology & Atmospheric Sciences Agronomy |
description |
Net ecosystem exchange of carbon dioxide (NEE) and its components, gross primary productivity (GPP) and ecosystem respiration (ER), were compared between a bog and an abandoned peatland pasture within the same peatland complex in western Newfoundland, Canada. Measurements based on the eddy covariance technique from April 2014 to April 2016 were used to examine the influence of agricultural management and abandonment on peatland carbon dioxide (CO2) exchange. NEE, GPP and ER at both sites showed pronounced seasonal variation, peaking near the middle growing season. The maximum net CO2 uptake rate of -28.61 mu mol m(-2) s(-1) and emission rate of 14.39 mu mol m(-2) s(-1) at the pasture were significantly higher than those at the bog (-9.67 mu mol m(-2) s(-1) and 5.50 mu mol m(-2) s(-1), respectively). Daytime average GPP was related to photosynthetic photon flux density and air temperature and the nighttime average ER decreased with soil water content, but increased with surface soil temperature for both sites. Annual NEE of the pasture (-128 +/- 60 g C m(-2) yr(-1) in 2014-15 and -124 +/- 56 g C m(-2) yr(-1) in 2015-16) was considerably larger than that of the bog (-46 +/- 36 g C m(-2) yr(-1) in 2014-15). GPP of 1086 +/- 141 g C m(-2) yr(-1) in 2014-15 and 982 +/- 123 g C m(-2) yr(-1) in 2015-16 and ER of 957 129 g C m(-2) yr(-1) in 2014-15 and 858 +/- 112 g C m(-2) yr(-1) in 2015-16 at the pasture were approximately twice the magnitude of the corresponding fluxes at the bog. The difference in GPP between the bog and pasture was mainly related to their different aboveground biomass. Higher ER at the pasture was probably related to its lower water table depth, greater substrate availability and higher autotrophic respiration. Unlike previous findings that managed peat lands are large CO2 emitters, our results suggest that abandoned peatland pastures can function like natural grasslands and sequester considerable amounts of CO2 from the atmosphere. |
format |
Report |
author |
Wang, Mei Wu, Jianghua Lafleur, Peter M. Luan, Junwei Chen, Huai Zhu, Xinbiao |
author_facet |
Wang, Mei Wu, Jianghua Lafleur, Peter M. Luan, Junwei Chen, Huai Zhu, Xinbiao |
author_sort |
Wang, Mei |
title |
Can abandoned peatland pasture sequestrate more carbon dioxide from the atmosphere than an adjacent pristine bog in Newfoundland, Canada? |
title_short |
Can abandoned peatland pasture sequestrate more carbon dioxide from the atmosphere than an adjacent pristine bog in Newfoundland, Canada? |
title_full |
Can abandoned peatland pasture sequestrate more carbon dioxide from the atmosphere than an adjacent pristine bog in Newfoundland, Canada? |
title_fullStr |
Can abandoned peatland pasture sequestrate more carbon dioxide from the atmosphere than an adjacent pristine bog in Newfoundland, Canada? |
title_full_unstemmed |
Can abandoned peatland pasture sequestrate more carbon dioxide from the atmosphere than an adjacent pristine bog in Newfoundland, Canada? |
title_sort |
can abandoned peatland pasture sequestrate more carbon dioxide from the atmosphere than an adjacent pristine bog in newfoundland, canada? |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
2018 |
url |
http://ir.imde.ac.cn/handle/131551/22662 https://doi.org/10.1016/j.agrformet.2017.09.010 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_relation |
AGRICULTURAL AND FOREST METEOROLOGY http://ir.imde.ac.cn/handle/131551/22662 doi:10.1016/j.agrformet.2017.09.010 |
op_doi |
https://doi.org/10.1016/j.agrformet.2017.09.010 |
container_title |
Agricultural and Forest Meteorology |
container_volume |
248 |
container_start_page |
91 |
op_container_end_page |
108 |
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1766108974775533568 |