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• W2895957912 endingPage "323" @default.
• W2895957912 startingPage "310" @default.
• W2895957912 abstract "Due to the large carbon dioxide (CO2) fluxes between terrestrial ecosystems and the atmosphere, dynamics of photosynthesis can have significant effects on atmospheric CO2 concentrations and lead to large uncertainties in ecosystem C budgets. Remote sensing approaches using sun-induced chlorophyll fluorescence (SIF) hold the potential to directly assess ecosystem photosynthesis. However, many challenges remain linked to using the SIF emission signal to estimate gross primary production (GPP). The goal of this study was to gain a better understanding of the relationships between GPP and SIF over different time scales (minutes to years) and under varying environmental conditions. Two different ecosystems were investigated, a cropland and a mixed forest, with continuous eddy covariance flux measurements. Continuous tower-based SIF retrievals were performed in 2015 and 2016 at both ecosystems. In both ecosystems, SIF was found to be more affected by environmental conditions than GPP. Annual cycles for GPP and SIF differed at the mixed forest due in part to the influence of the different footprint size of the two independent measurements. Diurnal cycles in GPP and SIF corresponded well under unstressed conditions and followed the incoming photosynthetic photon flux density (PPFD). However, depressions in SIF were found at both sites either at midday or in the afternoon during the growing season. At the cropland site, reductions in SIF occurred at high PPFD (PPFD > 1470 μmol m−2 s−1, R2 = 0.62) and high VPD (VPD > 1590 Pa, R2 = 0.35). Whereas at the forest site, reductions in SIF were linked to high VPD (VPD > 1250 Pa, R2 = 0.25), but not to high PPFD (R2 = 0.84). The depression in SIF was also associated with an increase in non-photochemical quenching, as indicated by the photochemical reflectance index (R2 = 0.78), thus showing the complementarity between SIF and non-photochemical quenching as different energy pathways. Our results show the importance of characterizing the influence of different environmental conditions on SIF-GPP relationships for specific ecosystems to reliably estimate GPP from remote sensing measurements." @default.
• W2895957912 created "2018-10-26" @default.
• W2895957912 creator A5009972805 @default.
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• W2895957912 creator A5077323678 @default.
• W2895957912 date "2018-12-01" @default.
• W2895957912 modified "2023-10-16" @default.
• W2895957912 title "Effect of environmental conditions on sun-induced fluorescence in a mixed forest and a cropland" @default.
• W2895957912 cites W1567498106 @default.
• W2895957912 cites W1590480496 @default.
• W2895957912 cites W1594394486 @default.
• W2895957912 cites W1719739711 @default.
• W2895957912 cites W1778664489 @default.
• W2895957912 cites W1966715855 @default.
• W2895957912 cites W1980298608 @default.
• W2895957912 cites W1983821125 @default.
• W2895957912 cites W1994224472 @default.
• W2895957912 cites W2003555321 @default.
• W2895957912 cites W2010679452 @default.
• W2895957912 cites W2012250211 @default.
• W2895957912 cites W2013018512 @default.
• W2895957912 cites W2014196086 @default.
• W2895957912 cites W2019012731 @default.
• W2895957912 cites W2019623635 @default.
• W2895957912 cites W2029598006 @default.
• W2895957912 cites W2030071464 @default.
• W2895957912 cites W2030233869 @default.
• W2895957912 cites W2034089440 @default.
• W2895957912 cites W2034672914 @default.
• W2895957912 cites W2040378506 @default.
• W2895957912 cites W2041990935 @default.
• W2895957912 cites W2043777831 @default.
• W2895957912 cites W2052648234 @default.
• W2895957912 cites W2055433187 @default.
• W2895957912 cites W2072490792 @default.
• W2895957912 cites W2072619709 @default.
• W2895957912 cites W2079902777 @default.
• W2895957912 cites W2082742619 @default.
• W2895957912 cites W2086099666 @default.
• W2895957912 cites W2093219077 @default.
• W2895957912 cites W2094278312 @default.
• W2895957912 cites W2096409528 @default.
• W2895957912 cites W2101493446 @default.
• W2895957912 cites W2101695001 @default.
• W2895957912 cites W2102183854 @default.
• W2895957912 cites W2102643689 @default.
• W2895957912 cites W2104090919 @default.
• W2895957912 cites W2106367330 @default.
• W2895957912 cites W2109542058 @default.
• W2895957912 cites W2111443984 @default.
• W2895957912 cites W2111783170 @default.
• W2895957912 cites W2111894443 @default.
• W2895957912 cites W2114777234 @default.
• W2895957912 cites W2116520559 @default.
• W2895957912 cites W2122158813 @default.
• W2895957912 cites W2124274454 @default.
• W2895957912 cites W2126163401 @default.
• W2895957912 cites W2132527497 @default.
• W2895957912 cites W2132926627 @default.
• W2895957912 cites W2133506218 @default.
• W2895957912 cites W2137203802 @default.
• W2895957912 cites W2147138513 @default.
• W2895957912 cites W2147824138 @default.
• W2895957912 cites W2150219527 @default.
• W2895957912 cites W2151328940 @default.
• W2895957912 cites W2151341216 @default.
• W2895957912 cites W2154047482 @default.
• W2895957912 cites W2154981955 @default.
• W2895957912 cites W2156759985 @default.
• W2895957912 cites W2157905269 @default.
• W2895957912 cites W2158851109 @default.
• W2895957912 cites W2160906348 @default.
• W2895957912 cites W2162066572 @default.
• W2895957912 cites W2163004831 @default.
• W2895957912 cites W2164995320 @default.
• W2895957912 cites W2167869058 @default.
• W2895957912 cites W2170100659 @default.
• W2895957912 cites W2170172513 @default.
• W2895957912 cites W2170866521 @default.
• W2895957912 cites W2206884203 @default.
• W2895957912 cites W2338049369 @default.
• W2895957912 cites W2528839566 @default.
• W2895957912 cites W2545562249 @default.
• W2895957912 cites W2548357517 @default.
• W2895957912 cites W2561415527 @default.
• W2895957912 cites W2581741828 @default.
• W2895957912 cites W2596401496 @default.
• W2895957912 cites W2605993846 @default.
• W2895957912 cites W2762155383 @default.
• W2895957912 cites W2763833521 @default.
• W2895957912 cites W2766330318 @default.
• W2895957912 cites W4211228737 @default.
• W2895957912 cites W568010113 @default.
• W2895957912 cites W627777417 @default.

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