Biogeosciences
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Articles | Volume 16, issue 15
Articles | Volume 16, issue 15
https://doi.org/10.5194/bg-16-2937-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-16-2937-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 15
Research article
 | 
01 Aug 2019
Research article |  | 01 Aug 2019

Assessing shaded-leaf effects on photochemical reflectance index (PRI) for water stress detection in winter wheat

Xin Yang, Shishi Liu, Yinuo Liu, Xifeng Ren, and Hang Su

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Short summary
The photochemical reflectance index (PRI) derived from remotely sensed data has emerged to be a pre-visual indicator of water stress. This study evaluated the impact of the varying shaded-leaf fractions on estimating relative water content (RWC) across growth stages of winter wheat using PRI derived from hyperspectral imagery. Results showed that PRI of the pure shaded leaves may yield inaccurate estimates of plant water status, but the accuracy of RWC predictions was not significantly affected.
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