Nitrogen controls plant canopy light-use efficiency in temperate and boreal ecosystems
Optimum daily light-use efficiency (LUE) and normalized canopy photosynthesis (GEE*) rate, a proxy for LUE, have been derived from eddy covariance CO2 flux measurements obtained at a range of sites located in the mid to high latitudes. These two variables were analyzed with respect to environmental...
Published in: | Journal of Geophysical Research: Biogeosciences |
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2008
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Online Access: | https://lup.lub.lu.se/record/1307561 https://doi.org/10.1029/2007JG000676 |
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ftulundlup:oai:lup.lub.lu.se:74778539-a8a0-413c-b47c-df3b0c4df9bc 2023-05-15T14:58:43+02:00 Nitrogen controls plant canopy light-use efficiency in temperate and boreal ecosystems Kergoat, Laurent Lafont, Sebastien Arneth, Almut Le Dantec, Valerie Saugier, Bernard 2008 https://lup.lub.lu.se/record/1307561 https://doi.org/10.1029/2007JG000676 eng eng Wiley-Blackwell https://lup.lub.lu.se/record/1307561 http://dx.doi.org/10.1029/2007JG000676 wos:000261145300001 scopus:61349168068 Journal of Geophysical Research; 113(G4), pp 04017-04017 (2008) ISSN: 2156-2202 Physical Geography contributiontojournal/systematicreview info:eu-repo/semantics/article text 2008 ftulundlup https://doi.org/10.1029/2007JG000676 2023-02-01T23:32:47Z Optimum daily light-use efficiency (LUE) and normalized canopy photosynthesis (GEE*) rate, a proxy for LUE, have been derived from eddy covariance CO2 flux measurements obtained at a range of sites located in the mid to high latitudes. These two variables were analyzed with respect to environmental conditions, plant functional types (PFT) and leaf nitrogen concentration, in an attempt to characterize their variability and their potential drivers. LUE averaged 0.0182 mol/mol with a coefficient of variation of 37% (42% for GEE*). Foliar nitrogen N of the dominant plant species was found to explain 71% of LUE (n = 26) and 62% of GEE* (n = 44) variance, across all PFTs and sites. Mean Annual Temperature, MAT, explained 27% of LUE variance, and the two factors (MAT and N) combined in a simple linear model explain 80% of LUE and 76% GEE* variance. These results showed that plant canopies in the temperate, boreal and arctic zones fit into a general scheme closely related to the one, which had been established for plant leaves worldwide. The N-MAT- LUE relationships offer perspectives for LUE-based models of terrestrial photosynthesis based on remote sensing. On a continental scale, the decrease of LUE from the temperate to the arctic zone found in the data derived from flux measurements is not in line with LUE resulting from inversion of atmospheric CO2. Article in Journal/Newspaper Arctic Lund University Publications (LUP) Arctic Journal of Geophysical Research: Biogeosciences 113 G4 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Physical Geography |
spellingShingle |
Physical Geography Kergoat, Laurent Lafont, Sebastien Arneth, Almut Le Dantec, Valerie Saugier, Bernard Nitrogen controls plant canopy light-use efficiency in temperate and boreal ecosystems |
topic_facet |
Physical Geography |
description |
Optimum daily light-use efficiency (LUE) and normalized canopy photosynthesis (GEE*) rate, a proxy for LUE, have been derived from eddy covariance CO2 flux measurements obtained at a range of sites located in the mid to high latitudes. These two variables were analyzed with respect to environmental conditions, plant functional types (PFT) and leaf nitrogen concentration, in an attempt to characterize their variability and their potential drivers. LUE averaged 0.0182 mol/mol with a coefficient of variation of 37% (42% for GEE*). Foliar nitrogen N of the dominant plant species was found to explain 71% of LUE (n = 26) and 62% of GEE* (n = 44) variance, across all PFTs and sites. Mean Annual Temperature, MAT, explained 27% of LUE variance, and the two factors (MAT and N) combined in a simple linear model explain 80% of LUE and 76% GEE* variance. These results showed that plant canopies in the temperate, boreal and arctic zones fit into a general scheme closely related to the one, which had been established for plant leaves worldwide. The N-MAT- LUE relationships offer perspectives for LUE-based models of terrestrial photosynthesis based on remote sensing. On a continental scale, the decrease of LUE from the temperate to the arctic zone found in the data derived from flux measurements is not in line with LUE resulting from inversion of atmospheric CO2. |
format |
Article in Journal/Newspaper |
author |
Kergoat, Laurent Lafont, Sebastien Arneth, Almut Le Dantec, Valerie Saugier, Bernard |
author_facet |
Kergoat, Laurent Lafont, Sebastien Arneth, Almut Le Dantec, Valerie Saugier, Bernard |
author_sort |
Kergoat, Laurent |
title |
Nitrogen controls plant canopy light-use efficiency in temperate and boreal ecosystems |
title_short |
Nitrogen controls plant canopy light-use efficiency in temperate and boreal ecosystems |
title_full |
Nitrogen controls plant canopy light-use efficiency in temperate and boreal ecosystems |
title_fullStr |
Nitrogen controls plant canopy light-use efficiency in temperate and boreal ecosystems |
title_full_unstemmed |
Nitrogen controls plant canopy light-use efficiency in temperate and boreal ecosystems |
title_sort |
nitrogen controls plant canopy light-use efficiency in temperate and boreal ecosystems |
publisher |
Wiley-Blackwell |
publishDate |
2008 |
url |
https://lup.lub.lu.se/record/1307561 https://doi.org/10.1029/2007JG000676 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Journal of Geophysical Research; 113(G4), pp 04017-04017 (2008) ISSN: 2156-2202 |
op_relation |
https://lup.lub.lu.se/record/1307561 http://dx.doi.org/10.1029/2007JG000676 wos:000261145300001 scopus:61349168068 |
op_doi |
https://doi.org/10.1029/2007JG000676 |
container_title |
Journal of Geophysical Research: Biogeosciences |
container_volume |
113 |
container_issue |
G4 |
_version_ |
1766330841467715584 |