Estimating Leaf Water Status from Vis-nir Reflectance and Transmittance
نویسندگان
چکیده
Remotely sensing the water status of plant canopies remains a long term goal of remote sensing research. Established approaches involve measurements in the thermal infrared and the 900-2000nm reflective infrared. Less popular UVvisible-NIR techniques presumably deserve research attention, because photochemical changes linked to plant water status manifest spectral light scattering and absorption changes. Here we monitored the visible and NIR light reflected from the leaf interior as well as the leaf transmittance as the relative water content of corn (Zea mays L.) leaves decreased. Our results highlight the importance of both scattering effects and effects due to absorption by leaf pigments.
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