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The reflectance of Pleurozium scheberi as a function of water status and its implications on understory reflectance variations for BOREAS sites

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5 Author(s)
Fernandes, R. ; Dept. of Geogr., Toronto Univ., Ont., Canada ; White, H.P. ; Peddle, D.R. ; Miller, J.R.
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A controlled laboratory experiment was conducted to test the null hypothesis that the nadir reflectance of Pleurozium scheberi (a feather moss) in the red (ρRED), near-infrared (ρNIR ), and infrared (ρIR) bands is not a function of live layer moisture content. Reflectance spectra were acquired from replicate moss turves over five dry down stages ranging from 4.8 g water/g moss to 0 g/g. Replicate spectra showed a maximum 13.5% increase in ρRED; almost no significant change in ρNIR ; and over 20% increase in ρIR. However, ρRED variations due to drying before desiccation were less than 2%. Inter-replicate differences in reflectance were often larger than dry down differences. NIR understory reflectance measured in a moss dominated BOREAS site showed a significant seasonal change in ρNIR which is not likely due to moisture variations

Published in:

Geoscience and Remote Sensing Symposium, 1996. IGARSS '96. 'Remote Sensing for a Sustainable Future.', International  (Volume:1 )

Date of Conference:

27-31 May 1996

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