Estimating canopy gross primary production by combining phloem stable isotopes with canopy and mesophyll conductances
Gross primary production (GPP) is a key component of the forest carbon cycle. However, our knowledge of GPP at the stand scale remains uncertain, because estimates derived from eddy covariance (EC) rely on semi-empirical modelling and the assumptions of the EC technique are sometimes not fully met....
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ftunivsthongkong:oai:repository.hkust.edu.hk:1783.1-119363 2023-05-15T17:44:43+02:00 Estimating canopy gross primary production by combining phloem stable isotopes with canopy and mesophyll conductances Vernay, Antoine Tian, Xianglin Chi, Jinshu Linder, Sune Mäkelä, Annikki Oren, Ram Peichl, Matthias Stangl, Zsofia R. Tor‐Ngern, Pantana Marshall, John D. 2020 https://repository.hkust.edu.hk/ir/Record/1783.1-119363 https://doi.org/10.1111/pce.13835 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0140-7791&rft.volume=43&rft.issue=9&rft.date=2020&rft.spage=2124&rft.aulast=Vernay&rft.aufirst=Antoine&rft.atitle=Estimating+canopy+gross+primary+production+by+combining+phloem+stable+isotopes+with+canopy+and+mesophyll+conductances&rft.title=Plant,+Cell+%26amp%3B+Environment http://www.scopus.com/record/display.url?eid=2-s2.0-85088384113&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000551855300001 English eng Wiley https://repository.hkust.edu.hk/ir/Record/1783.1-119363 Plant, Cell & Environment, v. 43, (9), 29 June 2020, p. 2124-2142 0140-7791 1365-3040 https://doi.org/10.1111/pce.13835 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0140-7791&rft.volume=43&rft.issue=9&rft.date=2020&rft.spage=2124&rft.aulast=Vernay&rft.aufirst=Antoine&rft.atitle=Estimating+canopy+gross+primary+production+by+combining+phloem+stable+isotopes+with+canopy+and+mesophyll+conductances&rft.title=Plant,+Cell+%26amp%3B+Environment http://www.scopus.com/record/display.url?eid=2-s2.0-85088384113&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000551855300001 Article 2020 ftunivsthongkong https://doi.org/10.1111/pce.13835 2022-09-09T00:07:13Z Gross primary production (GPP) is a key component of the forest carbon cycle. However, our knowledge of GPP at the stand scale remains uncertain, because estimates derived from eddy covariance (EC) rely on semi-empirical modelling and the assumptions of the EC technique are sometimes not fully met. We propose using the sap flux/isotope method as an alternative way to estimate canopy GPP, termed GPP iso/SF , at the stand scale and at daily resolution. It is based on canopy conductance inferred from sap flux and intrinsic water-use efficiency estimated from the stable carbon isotope composition of phloem contents. The GPP iso/SF estimate was further corrected for seasonal variations in photosynthetic capacity and mesophyll conductance. We compared our estimate of GPP iso/SF to the GPP derived from PRELES, a model parameterized with EC data. The comparisons were performed in a highly instrumented, boreal Scots pine forest in northern Sweden, including a nitrogen fertilized and a reference plot. The resulting annual and daily GPP iso/SF estimates agreed well with PRELES, in the fertilized plot and the reference plot. We discuss the GPP iso/SF method as an alternative which can be widely applied without terrain restrictions, where the assumptions of EC are not met. Article in Journal/Newspaper Northern Sweden The Hong Kong University of Science and Technology: HKUST Institutional Repository Plant, Cell & Environment 43 9 2124 2142 |
institution |
Open Polar |
collection |
The Hong Kong University of Science and Technology: HKUST Institutional Repository |
op_collection_id |
ftunivsthongkong |
language |
English |
description |
Gross primary production (GPP) is a key component of the forest carbon cycle. However, our knowledge of GPP at the stand scale remains uncertain, because estimates derived from eddy covariance (EC) rely on semi-empirical modelling and the assumptions of the EC technique are sometimes not fully met. We propose using the sap flux/isotope method as an alternative way to estimate canopy GPP, termed GPP iso/SF , at the stand scale and at daily resolution. It is based on canopy conductance inferred from sap flux and intrinsic water-use efficiency estimated from the stable carbon isotope composition of phloem contents. The GPP iso/SF estimate was further corrected for seasonal variations in photosynthetic capacity and mesophyll conductance. We compared our estimate of GPP iso/SF to the GPP derived from PRELES, a model parameterized with EC data. The comparisons were performed in a highly instrumented, boreal Scots pine forest in northern Sweden, including a nitrogen fertilized and a reference plot. The resulting annual and daily GPP iso/SF estimates agreed well with PRELES, in the fertilized plot and the reference plot. We discuss the GPP iso/SF method as an alternative which can be widely applied without terrain restrictions, where the assumptions of EC are not met. |
format |
Article in Journal/Newspaper |
author |
Vernay, Antoine Tian, Xianglin Chi, Jinshu Linder, Sune Mäkelä, Annikki Oren, Ram Peichl, Matthias Stangl, Zsofia R. Tor‐Ngern, Pantana Marshall, John D. |
spellingShingle |
Vernay, Antoine Tian, Xianglin Chi, Jinshu Linder, Sune Mäkelä, Annikki Oren, Ram Peichl, Matthias Stangl, Zsofia R. Tor‐Ngern, Pantana Marshall, John D. Estimating canopy gross primary production by combining phloem stable isotopes with canopy and mesophyll conductances |
author_facet |
Vernay, Antoine Tian, Xianglin Chi, Jinshu Linder, Sune Mäkelä, Annikki Oren, Ram Peichl, Matthias Stangl, Zsofia R. Tor‐Ngern, Pantana Marshall, John D. |
author_sort |
Vernay, Antoine |
title |
Estimating canopy gross primary production by combining phloem stable isotopes with canopy and mesophyll conductances |
title_short |
Estimating canopy gross primary production by combining phloem stable isotopes with canopy and mesophyll conductances |
title_full |
Estimating canopy gross primary production by combining phloem stable isotopes with canopy and mesophyll conductances |
title_fullStr |
Estimating canopy gross primary production by combining phloem stable isotopes with canopy and mesophyll conductances |
title_full_unstemmed |
Estimating canopy gross primary production by combining phloem stable isotopes with canopy and mesophyll conductances |
title_sort |
estimating canopy gross primary production by combining phloem stable isotopes with canopy and mesophyll conductances |
publisher |
Wiley |
publishDate |
2020 |
url |
https://repository.hkust.edu.hk/ir/Record/1783.1-119363 https://doi.org/10.1111/pce.13835 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0140-7791&rft.volume=43&rft.issue=9&rft.date=2020&rft.spage=2124&rft.aulast=Vernay&rft.aufirst=Antoine&rft.atitle=Estimating+canopy+gross+primary+production+by+combining+phloem+stable+isotopes+with+canopy+and+mesophyll+conductances&rft.title=Plant,+Cell+%26amp%3B+Environment http://www.scopus.com/record/display.url?eid=2-s2.0-85088384113&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000551855300001 |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_relation |
https://repository.hkust.edu.hk/ir/Record/1783.1-119363 Plant, Cell & Environment, v. 43, (9), 29 June 2020, p. 2124-2142 0140-7791 1365-3040 https://doi.org/10.1111/pce.13835 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0140-7791&rft.volume=43&rft.issue=9&rft.date=2020&rft.spage=2124&rft.aulast=Vernay&rft.aufirst=Antoine&rft.atitle=Estimating+canopy+gross+primary+production+by+combining+phloem+stable+isotopes+with+canopy+and+mesophyll+conductances&rft.title=Plant,+Cell+%26amp%3B+Environment http://www.scopus.com/record/display.url?eid=2-s2.0-85088384113&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000551855300001 |
op_doi |
https://doi.org/10.1111/pce.13835 |
container_title |
Plant, Cell & Environment |
container_volume |
43 |
container_issue |
9 |
container_start_page |
2124 |
op_container_end_page |
2142 |
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1766147000805359616 |