Linking photosynthesis and sun-induced fluorescence at sub-daily to seasonal scales

Wieneke, Sebastian; Burkart, Andreas; Cendrero-Mateo, Maria Pilar; Julitta, Tommaso; Rossini, Micol; Schickling, Anke; Schmidt, Marius; Rascher, Uwe

doi:10.1016/j.rse.2018.10.019

Cited by 88 publications

(68 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The GPP:SIF relationship was reported to be consistently positive in previous studies, and our current study at the two maize sites confirmed the positive pattern. The LUE:SIF y relationship was different from the GPP:SIF relationship and exhibited various patterns from different studies (Damm et al, ; Miao et al, ; Wieneke et al, ; K. Yang, Ryu, et al, ; X. Yang, Shi, et al, ; Yang et al, ). Although the mechanism of the various LUE:SIF y relationship is still in debate, our current study indicated that the LUE:SIF y relationship varied at different temporal scales and at different growth crop stages.…”

Section: Discussionmentioning

confidence: 99%

“…SIF relationship and exhibited various patterns from different studies (Damm et al, 2010;Miao et al, 2018;Wieneke et al, 2018;K. Yang, Ryu, et al, 2018;X.…”

Section: Journal Of Geophysical Research: Biogeosciencesmentioning

confidence: 95%

“…Previous studies found that APAR is the primary driver that leads to the linear GPP:SIF relationship (Rossini et al, ; K. Yang, Ryu, et al, ; X. Yang, Shi, et al, ; Yang et al, ; Zhang et al, ). Some studies also suggested that LUE and SIF y contribute to the relationship and a diverse LUE:SIF y relationship implies a potentially diverse GPP:SIF relationship (Badgley et al, ; Miao et al, ; Wieneke et al, ). However, the contributions from PAR in , fPAR, LUE, and SIF y to GPP and SIF variations as well as the GPP:SIF relationship have not been specifically quantified and compared across a sufficiently wide range of conditions to provide a clear conclusion, and more studies of this issue are warranted.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Varying Contributions of Drivers to the Relationship Between Canopy Photosynthesis and Far‐Red Sun‐Induced Fluorescence for Two Maize Sites at Different Temporal Scales

et al. 2020

View full text Add to dashboard Cite

Sun‐induced fluorescence (SIF) has been found to be strongly correlated with gross primary production (GPP) in a quasi‐linear pattern at the scales beyond leaves. However, the causes of the GPP:SIF relationship deviating from a linear pattern remain unclear. In the current study conducted at two maize sites in Nebraska in 2017 summer growing season, we investigated the relationship between GPP and SIF at 760 nm (F760) at two temporal scales and quantified the contributions of incoming photosynthetically active radiation (PARin), fraction of absorbed PAR (fPAR), light use efficiency (LUE), and F760 yield (F760,y, defined as F760/(PARin×fPAR)) to GPP and F760 variabilities to further understand the linearity and deviations in the GPP:F760 relationship. We found the following: (1) For individual growth stages when canopy structure and chlorophyll content were stable, GPP and F760 were strongly controlled by PARin, while LUE and F760,y had much lower contributions to the GPP:F760 relationship; during this period, LUE and F760,y had either a slightly negative or no clear relationship, which explained some deviations in the GPP:SIF relationship. (2) At the seasonal scale, the contribution of LUE to GPP variability as well as the contribution of F760,y to F760 variability increased and was comparable to the contribution of PARin; the LUE:F760,y relationship showed a strong linear relationship, which strengthened the linear GPP:F760 relationship. Both maize sites showed similar patterns. A framework was applied to estimate LUE at individual stages and as a result, significantly improved the GPP estimation, thus enhancing the SIF potential for inferring photosynthesis.

show abstract

Section: Discussionmentioning

confidence: 99%

“…SIF relationship and exhibited various patterns from different studies (Damm et al, 2010;Miao et al, 2018;Wieneke et al, 2018;K. Yang, Ryu, et al, 2018;X.…”

Section: Journal Of Geophysical Research: Biogeosciencesmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Varying Contributions of Drivers to the Relationship Between Canopy Photosynthesis and Far‐Red Sun‐Induced Fluorescence for Two Maize Sites at Different Temporal Scales

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The range of experiments presented is somewhat analogous to how different remote sensing platforms may observe canopies at shorter (diurnal) and longer timescales (seasonal). At the canopy scale, some studies have indicated that red:far‐red SIF can vary by over 50% during the course of a day, suggesting that this is a dynamic diurnal response of plants to environmental stress (Cheng et al, ; Middleton et al, ; Rossini et al, ; Wieneke et al, , ). Based on our leaf and canopy measurements, we consider that preferential quenching of PSII alone is unlikely to explain this variation, even for highly stressed leaves (Figures and ).…”

Section: Discussionmentioning

confidence: 99%

“…By accounting for changes in the spectral shape due to Chl reabsorption, researchers have suggested that the red:far-red ChlF ratio can potentially provide information on the responses of vegetation to water, temperature, or nitrogen stresses (Ač et al, 2015;Agati, 1998;Buschmann, 2007;Genty et al, 1990;Lichtenthaler et al, 1998). Building on this, some canopyscale research indicates that large diurnal changes in the remotely sensed red:far-red SIF ratio can be attributed to the downregulation of photosynthesis (Ač et al, 2015;Middleton et al, 2017;Wieneke et al, 2016Wieneke et al, , 2018; but note that this may be overshadowed by canopy structure and measurement geometry effects (Goulas et al, 2017;Liu et al, 2018). However, we are not aware of any attempts to disentangle contributing factors (i.e., Chl and changes in PSI/PSII fluorescence contributions), which simultaneously impact the spectral shape of ChlF ratio on single leaves.…”

Section: Introductionmentioning

confidence: 99%

Disentangling Changes in the Spectral Shape of Chlorophyll Fluorescence: Implications for Remote Sensing of Photosynthesis

et al. 2019

View full text Add to dashboard Cite

Novel satellite measurements of solar‐induced chlorophyll fluorescence (SIF) can improve our understanding of global photosynthesis; however, little is known about how to interpret the controls on its spectral variability. To address this, we disentangle simultaneous drivers of fluorescence spectra by coupling active and passive fluorescence measurements with photosynthesis. We show empirical and mechanistic evidence for where, why, and to what extent leaf fluorescence spectra change. Three distinct components explain more than 95% of the variance in leaf fluorescence spectra under both steady‐state and changing illumination conditions. A single spectral shape of fluorescence explains 84% of the variance across a wide range of species. The magnitude of this shape responds to absorbed light and photosynthetic up/down regulation; meanwhile, chlorophyll concentration and nonphotochemical quenching control 9% and 3% of the remaining spectral variance, respectively. The spectral shape of fluorescence is remarkably stable where most current satellite retrievals occur (“far‐red,” >740nm), and dynamic downregulation of photosynthesis reduces fluorescence magnitude similarly across the 670‐ to 850‐nm range. We conduct an exploratory analysis of hourly red and far‐red canopy SIF in soybean, which shows a subtle change in red:far‐red fluorescence coincident with photosynthetic downregulation but is overshadowed by longer‐term changes in canopy chlorophyll and structure. Based on our leaf and canopy analysis, caution should be taken when attributing large changes in the spectral shape of remotely sensed SIF to plant stress, particularly if data acquisition is temporally sparse. Ultimately, changes in SIF magnitude at wavelengths greater than 740 nm alone may prove sufficient for tracking photosynthetic dynamics.

show abstract

A new space-borne perspective of crop productivity variations over the US Corn Belt

Somkuti

Bösch

Feng

et al. 2020

Agricultural and Forest Meteorology

View full text Add to dashboard Cite

Linking photosynthesis and sun-induced fluorescence at sub-daily to seasonal scales

Cited by 88 publications

References 69 publications

Varying Contributions of Drivers to the Relationship Between Canopy Photosynthesis and Far‐Red Sun‐Induced Fluorescence for Two Maize Sites at Different Temporal Scales

Varying Contributions of Drivers to the Relationship Between Canopy Photosynthesis and Far‐Red Sun‐Induced Fluorescence for Two Maize Sites at Different Temporal Scales

Disentangling Changes in the Spectral Shape of Chlorophyll Fluorescence: Implications for Remote Sensing of Photosynthesis

A new space-borne perspective of crop productivity variations over the US Corn Belt

Contact Info

Product

Resources

About