Reflectance spectra of subarctic lichens
Lichens constitute a major portion of the ground cover of high latitude environments, but little has been reported concerning their in situ solar spectral reflectance properties. Knowledge of these properties is important for the interpretation of remotely sensed observations from high latitude regi...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19880050193 2023-05-15T15:06:09+02:00 Reflectance spectra of subarctic lichens Petzold, Donald E. Goward, Samuel N. Unclassified, Unlimited, Publicly available Apr 1, 1988 http://ntrs.nasa.gov/search.jsp?R=19880050193 unknown http://ntrs.nasa.gov/search.jsp?R=19880050193 Accession ID: 88A37420 Copyright Other Sources 43 Remote Sensing of Environment; 24; 481-492 1988 ftnasantrs 2012-02-15T17:36:50Z Lichens constitute a major portion of the ground cover of high latitude environments, but little has been reported concerning their in situ solar spectral reflectance properties. Knowledge of these properties is important for the interpretation of remotely sensed observations from high latitude regions, as well as in studies of high latitude ecology and energy balance climatology. The spectral reflectance of common boreal vascular plants is similar to that of vascular plants of the midlatitudes. The dominant lichens, in contrast, display variable reflectance patterns in visible wavelengths. The relative reflectance peak at 0.55 microns, common to green vegetation, is absent or indistinct in spectra of pervasive boreal forest and tundra lichens, despite the presence of chlorophyll in the inner algal cells. Lichens of the dominant genus, Cladina, display strong absorption of ultraviolet energy and short-wavelength blue light relative to their absorption in other visible wavelengths. Since the Cladinae dominate both the surface vegetation in open woodlands of the boreal forest and the low arctic tundra, their unusual spectral reflectance patterns will enable accurate monitoring of the boreal forest-tundra ecotone and detection of its vigor and movement in the future. Other/Unknown Material Arctic Subarctic Tundra NASA Technical Reports Server (NTRS) Arctic |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
43 |
spellingShingle |
43 Petzold, Donald E. Goward, Samuel N. Reflectance spectra of subarctic lichens |
topic_facet |
43 |
description |
Lichens constitute a major portion of the ground cover of high latitude environments, but little has been reported concerning their in situ solar spectral reflectance properties. Knowledge of these properties is important for the interpretation of remotely sensed observations from high latitude regions, as well as in studies of high latitude ecology and energy balance climatology. The spectral reflectance of common boreal vascular plants is similar to that of vascular plants of the midlatitudes. The dominant lichens, in contrast, display variable reflectance patterns in visible wavelengths. The relative reflectance peak at 0.55 microns, common to green vegetation, is absent or indistinct in spectra of pervasive boreal forest and tundra lichens, despite the presence of chlorophyll in the inner algal cells. Lichens of the dominant genus, Cladina, display strong absorption of ultraviolet energy and short-wavelength blue light relative to their absorption in other visible wavelengths. Since the Cladinae dominate both the surface vegetation in open woodlands of the boreal forest and the low arctic tundra, their unusual spectral reflectance patterns will enable accurate monitoring of the boreal forest-tundra ecotone and detection of its vigor and movement in the future. |
format |
Other/Unknown Material |
author |
Petzold, Donald E. Goward, Samuel N. |
author_facet |
Petzold, Donald E. Goward, Samuel N. |
author_sort |
Petzold, Donald E. |
title |
Reflectance spectra of subarctic lichens |
title_short |
Reflectance spectra of subarctic lichens |
title_full |
Reflectance spectra of subarctic lichens |
title_fullStr |
Reflectance spectra of subarctic lichens |
title_full_unstemmed |
Reflectance spectra of subarctic lichens |
title_sort |
reflectance spectra of subarctic lichens |
publishDate |
1988 |
url |
http://ntrs.nasa.gov/search.jsp?R=19880050193 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Subarctic Tundra |
genre_facet |
Arctic Subarctic Tundra |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19880050193 Accession ID: 88A37420 |
op_rights |
Copyright |
_version_ |
1766337802329391104 |