Remote Sensing of Instantaneous Drought Stress at Canopy Level Using Sun-Induced Chlorophyll Fluorescence and Canopy Reflectance

Cannière, Simon De; Vereecken, Harry; Defourny, Pierre; Jonard, François

doi:10.3390/rs14112642

Cited by 15 publications

(10 citation statements)

References 49 publications

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“…The suppression of leaf physiology (represented by decreased Φf) by drought was consistently reported by field measurement studies [53,54]. However, there were still differences in field measurements of the response of canopy structure to drought among different vegetation types, and both the slight impact of drought on canopy structure and the significant enhancement in it were reported [53]. Our study supported the enhancement of canopy during drought event.…”

Section: B Implicationssupporting

confidence: 86%

Satellite-Detected Contrasting Responses of Canopy Structure and Leaf Physiology to Drought

Yin

Yang

et al. 2023

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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Disentangling drought impacts on plant photosynthesis is crucial for projecting future terrestrial carbon dynamics. We examined the separate responses of canopy structure and leaf physiology to an extreme summer drought that occurred in 2011 over Southwest China, where the weather was humid and radiation was the main growth-limiting factor. Canopy structure and leaf physiology were, respectively, represented by near-infrared reflectance of vegetation (NIRv) derived from MODIS data and leaf scale fluorescence yield (Φf) derived from both Continuous SIF (CSIF) and global OCO-2 SIF (GOSIF). We detected contrasting responses of canopy structure and leaf physiology to drought with a 14.0% increase in NIRv, compared with 12.6 or 19.3% decreases in Φf from CSIF and GOSIF, respectively. The increase in structure resulted in a slight carbon change, due to water deficit-induced physiological constraints. The net ecosystem effect was a 7.5% (CSIF), 1.2% (GOSIF) and -2.96% (EC-LUE GPP) change in photosynthesis. Our study improves understanding of complex vegetation responses of plant photosynthesis to drought and may contribute to the reconciliation of contrasting observed directions in plant responses to drought in cloudy regions via remote sensing.

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Section: B Implicationssupporting

confidence: 86%

Satellite-Detected Contrasting Responses of Canopy Structure and Leaf Physiology to Drought

Yin

Yang

et al. 2023

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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“…Such coupled modelling approaches will furthermore allow to account for different timescales at which edaphic and atmospheric drought affects plant water relations and carbon acquisition. Experimental approaches, where atmospheric water demand is manipulated on community level (Aguirre et al 2021) as well as novel approaches to remotely sense drought stress in plant communities or on ecosystem level (Avetisyan et al 2021, De Cannière et al 2022) will be imperative for upscaling and to validate model predictions.…”

Section: Methodsmentioning

confidence: 99%

The need to decipher plant drought stress along the soil–plant–atmosphere continuum

Schweiger

Zimmermann

Poll

et al. 2023

Oikos

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Lacking comparability among rainfall manipulation studies is still a major limiting factor for generalizations in ecological climate change impact research. A common framework for studying ecological drought effects is urgently needed to foster advances in ecological understanding the effects of drought. In this study, we argue, that the soil–plant–atmosphere‐continuum (SPAC), describing the flow of water from the soil through the plant to the atmosphere, can serve as a holistic concept of drought in rainfall manipulation experiments which allows for the reconciliation experimental drought ecology. Using experimental data, we show that investigations of leaf water potential in combination with edaphic and atmospheric drought – as the three main components of the SPAC – are key to understand the effect of drought on plants. Based on a systematic literature survey, we show that especially plant and atmospheric based drought quantifications are strongly underrepresented and integrative assessments of all three components are almost absent in current experimental literature. Based on our observations we argue, that studying dynamics of plant water status in the framework of the SPAC can foster comparability of different studies conducted in different ecosystems and with different plant species and can facilitate extrapolation to other systems, species or future climates.

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“…The increased structural growth and decreased ΦF were obtained, and they formed a compromise in ecosystem photosynthesis. De Canniere et al [46] explored the impact of drought stress on SIF emission, the biochemical and structural components of SIF, and surface reflectance over lettuce and mustard. ΦF declined under drought stress, and the structural component barely showed a reaction.…”

Section: B Differences In Physiological and Non-physiological Informa...mentioning

confidence: 99%

Exploring Physiological and Nonphysiological Responses of Sun-Induced Chlorophyll Fluorescence to Different Levels of Water Stress in Winter Wheat

Lin,

Zhou,

2024

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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Sun-induced chlorophyll fluorescence (SIF) has recently been used for the early detection of plant stress. The response of SIF to water stress is complicated by the combination of physiological and non-physiological dynamics in SIF variations and has not been well explored. This paper aims to explore the physiological and non-physiological responses of SIF under different levels of water stress, by analyzing the data from winter wheat with four irrigation treatments (well-watered, moderate, severe, and extreme water stresses). Here the near-infrared radiance of vegetation (NIRvR) and the canopy near-infrared reflectance of vegetation multiplied by incoming sunlight (NIRvP) were selected to represent the non-physiological information of SIF. Then the physiological information (fluorescence yield, ΦF) was extracted by dividing SIF by NIRvP or NIRvR. The results indicate that the physiological and nonphysiological components of SIF were effective indicators for water stress detection. Compared to NDVI, the physiological and non-physiological components exhibited faster responses to different levels of water stress. The non-physiological component explored 68%-77% of SIF under different levels of water stress, and its contributions were firstly decreased and then increased as water stress increased. The stress-induced physiological decrease explored ~50% of SIF decrease under severe water stress and exceeded the non-physiological decrease at the onset of extreme water stress. This study provides direct insights into the physiological and non-physiological dynamics of SIF under different levels of water stress, which contribute to improving the detection of plant stress using SIF.

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Remote Sensing of Instantaneous Drought Stress at Canopy Level Using Sun-Induced Chlorophyll Fluorescence and Canopy Reflectance

Cited by 15 publications

References 49 publications

Satellite-Detected Contrasting Responses of Canopy Structure and Leaf Physiology to Drought

Satellite-Detected Contrasting Responses of Canopy Structure and Leaf Physiology to Drought

The need to decipher plant drought stress along the soil–plant–atmosphere continuum

Exploring Physiological and Nonphysiological Responses of Sun-Induced Chlorophyll Fluorescence to Different Levels of Water Stress in Winter Wheat

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