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19 June 2017 Using remotely sensed spectral reflectance to indicate leaf photosynthetic efficiency derived from active fluorescence measurements
Yi Peng, Aoli Zeng, Tinge Zhu, Shenghui Fang, Yan Gong, Yanqi Tao, Ying Zhou, Kan Liu
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Journal of Applied Remote Sensing, Vol. 11, Issue 2, 026034 (June 2017). https://doi.org/10.1117/1.JRS.11.026034
Abstract
Chlorophyll fluorescence (ChlF) is an important signature of photosynthesis to evaluate plant response to the environment. We explored an approach to estimate an important leaf ChlF-derived parameter, the intrinsic efficiency of photosystem II photochemistry ( F v / F m ), using spectral indices calculated from leaf reflectance measured by a hyperspectral radiometer. It is observed that leaf chlorophyll content closely related to F v / F m in nonstressed leaves, thus the indices developed for chlorophyll estimation were successfully used to estimate F v / F m . For leaves under short-term stress, F v / F m dropped dramatically while leaf chlorophyll content remained almost the same. Compared to leaf chlorophyll content, reflectance was more sensitive to F v / F m variations. As F v / F m decreased, the slope of reflectance in the spectrum range of 700 to 900 nm obviously increased, and the first derivative reflectance in the red edge and infrared (NIR) regions was highly correlated with
CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
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Yi Peng, Aoli Zeng, Tinge Zhu, Shenghui Fang, Yan Gong, Yanqi Tao, Ying Zhou, and Kan Liu "Using remotely sensed spectral reflectance to indicate leaf photosynthetic efficiency derived from active fluorescence measurements," Journal of Applied Remote Sensing 11(2), 026034 (19 June 2017). https://doi.org/10.1117/1.JRS.11.026034
Received: 4 January 2017; Accepted: 2 June 2017; Published: 19 June 2017
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Cited by 20 scholarly publications.
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KEYWORDS
Reflectivity
Luminescence
Near infrared
Infrared radiation
Photochemistry
Photosynthesis
Radiometry
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