Diffuse sky radiation influences the relationship between canopy PRI and shadow fraction

@inproceedings{Mottus2015DiffuseSR,
  title={Diffuse sky radiation influences the relationship between canopy PRI and shadow fraction},
  author={Matti Mottus and Tuure Takala and Pauline Stenberg and Yuri Knyazikhin and Bin Yang and T. Nilson},
  year={2015}
}
The Photochemical Reflectance Index (PRI) of green leaves is an indicator of photosynthetic downregulation: when the photosynthetic apparatus is close to the saturation limit, PRI becomes dependent on light conditions. Therefore, by measuring the PRI of leaves under different local irradiance conditions, it should be possible to determine the saturation level of the leaves and obtain information on the light use efficiency (LUE) of a vegetation canopy. The dependence of PRI on the ratio of… CONTINUE READING
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