Solar-induced chlorophyll fluorescence detects photosynthesis variations and drought effects in tropical rubber plantation and natural deciduous forests

Wang, Xueqian; Blanken, Peter D.; Wood, J. D.; Nouvellon, Yann; Thaler, Philippe; Kasemsap, Poonpipope; Chidthaisong, Amnat; Petchprayoon, Pakorn; Chayawat, Chompunut; Xiao, Jingfeng; Li, Xing

doi:10.1016/j.agrformet.2023.109591

Cited by 4 publications

(2 citation statements)

References 86 publications

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“…In cases where water stress led to significant changes in leaf inclination, the impact of canopy structure parameters on SIF cannot be ignored [29]. For example, based on the ground measurements from two rubber plantations and one natural forest site, Wang et al [53] indicated that canopy structure dominantly controlled the seasonal SIF-GPP relationship, and ΦF was sensitive to precipitation anomalies under drought at > REPLACE THIS LINE WITH YOUR MANUSCRIPT ID NUMBER (DOUBLE-CLICK HERE TO EDIT) < the regional scale. The possible explanation for the dominant role of canopy structure was related to the large variations in leaf angle and its distribution.…”

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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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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“…Previous studies have shown [70][71][72] that compared to the NDVI, SIF can more accurately monitor the impact of drought events on vegetation. Therefore, in the construction of the SRSEI, fluorescence data that can reflect vegetation physiological activity and photosynthetic capacity were added, which can better reflect the vegetation activity and photosynthetic capacity in the study area and exhibit a more sensitive and rapid response to drought and other stresses.…”

Section: Rsei Vs Srsei In the Loess Plateaumentioning

confidence: 99%

Ecological Environment Quality Assessment of Arid Areas Based on Improved Remote Sensing Ecological Index—A Case Study of the Loess Plateau

Shi,

Lin,

Jing

et al. 2023

Sustainability

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Ecosystems in arid and semi-arid areas are delicate and prone to different erosive effects. Monitoring and evaluating the environmental ecological condition in such areas contribute to the governance and restoration of the ecosystem. Remote sensing ecological indices (RSEIs) are widely used as a method for environmental monitoring and have been extensively applied in various regions. This study selects the arid and semi-arid Loess Plateau as the research area, in response to existing research on ecological monitoring that predominantly uses vegetation indices as monitoring indicators for greenness factors. A fluorescence remote sensing ecological index (SRSEI) is constructed by using monthly synthesized sun-induced chlorophyll fluorescence data during the vegetation growth period as a new component for greenness and combining it with MODIS product data. The study generates the RSEI and SRSEI for the research area spanning from 2001 to 2021. The study compares and analyzes the differences between the two indices and explores the evolution patterns of the ecosystem quality in the Loess Plateau over a 21-year period. The results indicate consistent and positively correlated linear fitting trend changes in the RSEI and SRSEI for the research area between 2001 and 2021. The newly constructed ecological index exhibits a higher correlation with rainfall data, and it shows a more significant decrease in magnitude during drought occurrences, indicating a faster and stronger response of the new index to drought in the research area. The largest proportions are found in the research area’s regions with both substantial and minor improvements, pointing to an upward tendency in the Loess Plateau’s ecosystem development. The newly constructed environmental index can effectively evaluate the quality of the ecosystem in the research area.

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Atmospheric water demand dominates terrestrial ecosystem productivity in China

Tu,

Wang,

Zhou

et al. 2024

Agricultural and Forest Meteorology

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Solar-induced chlorophyll fluorescence detects photosynthesis variations and drought effects in tropical rubber plantation and natural deciduous forests

Cited by 4 publications

References 86 publications

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

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

Ecological Environment Quality Assessment of Arid Areas Based on Improved Remote Sensing Ecological Index—A Case Study of the Loess Plateau

Atmospheric water demand dominates terrestrial ecosystem productivity in China

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