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Using MODIS derived...
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Connolly, JohnUniversity College Dublin
(author)
Using MODIS derived fPAR with ground based flux tower measurements to derive the light use efficiency for two Canadian peatlands
- Article/chapterEnglish2009
Publisher, publication year, extent ...
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2009-02-19
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Copernicus GmbH,2009
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234 s.
Numbers
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LIBRIS-ID:oai:lup.lub.lu.se:85d498ce-32b8-45f3-b742-10d34575bcd4
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https://lup.lub.lu.se/record/85d498ce-32b8-45f3-b742-10d34575bcd4URI
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https://doi.org/10.5194/bg-6-225-2009DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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We used satellite remote sensing data; fractionof photosynthetically active radiation absorbed by vegetation(fPAR) from the Moderate Resolution Imaging Spectrora-diometer (MODIS) in combination with tower eddy covari-ance and meteorological measurements to characterise theLight Use Efficiency parameter (ε)variability and the maxi-mumε(εmax)for two contrasting Canadian peatlands. Eight-day MODISfPAR data were acquired for the Mer Bleue(2000 to 2003) and Western Peatland (2004). Flux towereddy covariance and meteorological measurements were in-tegrated to the same eight-day time stamps as the MODISfPAR data. A light use efficiency model: GPP =ε×APAR(where GPP is Gross Primary Productivity and APAR is ab-sorbed photosynthetically active radiation) was used to cal-culateε. Theεmaxvalue for each year (2000 to 2003) at theMer Bleue bog ranged from 0.58 g C MJ−1to 0.78 g C MJ−1and was 0.91 g C MJ−1in 2004, for the Western Peatland.The average growing seasonεfor the Mer Bleue bog forthe four year period was 0.35 g C MJ−1and for the West-ern Peatland in 2004 was 0.57 g C MJ−1. The average snowfree period for the Mer Bleue bog over the four years was 0.27 g C MJ−1and for the Western Peatland in 2004 was0.39 g C MJ−1. Using the light use efficiency method wecalculated theεmaxand the annual variability inεfor twoCanadian peatlands. We determined that temperature was agrowth-limiting factor at both sites Vapour Pressure Deficit(VPD) however was not. MODISfPAR is a useful tool forthe characterization ofεat flux tower sites.
Added entries (persons, corporate bodies, meetings, titles ...)
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Roulet, Nigel T.McGill University
(author)
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Seaquist, JonathanLund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science(Swepub:lu)natg-jse
(author)
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Holden, N. M.University College Dublin
(author)
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Lafleur, Peter M.Trent University
(author)
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Humphreys, Elyn RCarleton University
(author)
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Heumann, B. W.University of North Carolina
(author)
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Ward, S. M.University College Dublin
(author)
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University College DublinMcGill University
(creator_code:org_t)
Related titles
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In:Biogeosciences: Copernicus GmbH32:6, s. 225-2251726-4189
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