Development of new spectral reflectance indices for the detection of lichens and mosses moisture content in the Hudson Bay Lowlands, Canada
作者： T. Neta , Q. Cheng , R. L. Bello , B. Hu
DOI: 10.1002/HYP.7878
关键词: Environmental science 、 Peat 、 Hydrology 、 Precipitation 、 Moisture 、 Spectral signature 、 Water content 、 Groundwater 、 Lichen 、 Water table
摘要: Assessing moisture contents of lichens and mosses using ground-based high-spectral resolution spectrometers offers immense opportunities for a comprehensive monitoring peatland status by satellite/airborne imagery. This study investigates the impact various conditions Cladina stellaris rangiferina, Dicranum elongatum Tomenthypnum nitens on spectral signatures obtained. Reflectance content measurements these species were made in laboratory setting, while maintaining natural samples; once complete, samples returned to field placed their continuously receiving from precipitation groundwater losing water through evaporation drainage. Previously, we correlated present indices with above species, whereas current developed new species-specific improve detection plants' contents. The relationship between table position was examined as well. It found that are not responsive variations position, mosses, specifically D. elongatum, quite sensitive changes position. Thus, use may contribute an indirect evaluation Overall, results suggest unique can be detected satellite airborne imagery, used indicators peatlands status. Copyright © 2010 John Wiley & Sons, Ltd.
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