Arctic Tundra Vegetation Functional Types Based on Photosynthetic Physiology and Optical Properties
Non-vascular plants (lichens and mosses) are significant components of tundra landscapes and may respond to climate change differently from vascular plants affecting ecosystem carbon balance. Remote sensing provides critical tools for monitoring plant cover types, as optical signals provide a way to...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20130014409 2023-05-15T15:05:45+02:00 Arctic Tundra Vegetation Functional Types Based on Photosynthetic Physiology and Optical Properties Landis, David R. Tweedie, Craig Huemmrich, Karl F. Middleton, Elizabeth M. Gamon, John Campbell, Petya K. Unclassified, Unlimited, Publicly available March 31, 2013 application/pdf http://hdl.handle.net/2060/20130014409 unknown Document ID: 20130014409 http://hdl.handle.net/2060/20130014409 Copyright, Distribution as joint owner in the copyright CASI Earth Resources and Remote Sensing GSFC-E-DAA-TN8466 2013 ftnasantrs 2019-07-21T06:16:30Z Non-vascular plants (lichens and mosses) are significant components of tundra landscapes and may respond to climate change differently from vascular plants affecting ecosystem carbon balance. Remote sensing provides critical tools for monitoring plant cover types, as optical signals provide a way to scale from plot measurements to regional estimates of biophysical properties, for which spatial-temporal patterns may be analyzed. Gas exchange measurements were collected for pure patches of key vegetation functional types (lichens, mosses, and vascular plants) in sedge tundra at Barrow AK. These functional types were found to have three significantly different values of light use efficiency (LUE) with values of 0.013+/-0.001, 0.0018+/-0.0002, and 0.0012+/-0.0001 mol C/mol absorbed quanta for vascular plants, mosses and lichens, respectively. Discriminant analysis of the spectra reflectance of these patches identified five spectral bands that separated each of these vegetation functional types as well as nongreen material (bare soil, standing water, and dead leaves). These results were tested along a 100 m transect where midsummer spectral reflectance and vegetation coverage were measured at one meter intervals. Other/Unknown Material Arctic Climate change Tundra NASA Technical Reports Server (NTRS) Arctic |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Earth Resources and Remote Sensing |
spellingShingle |
Earth Resources and Remote Sensing Landis, David R. Tweedie, Craig Huemmrich, Karl F. Middleton, Elizabeth M. Gamon, John Campbell, Petya K. Arctic Tundra Vegetation Functional Types Based on Photosynthetic Physiology and Optical Properties |
topic_facet |
Earth Resources and Remote Sensing |
description |
Non-vascular plants (lichens and mosses) are significant components of tundra landscapes and may respond to climate change differently from vascular plants affecting ecosystem carbon balance. Remote sensing provides critical tools for monitoring plant cover types, as optical signals provide a way to scale from plot measurements to regional estimates of biophysical properties, for which spatial-temporal patterns may be analyzed. Gas exchange measurements were collected for pure patches of key vegetation functional types (lichens, mosses, and vascular plants) in sedge tundra at Barrow AK. These functional types were found to have three significantly different values of light use efficiency (LUE) with values of 0.013+/-0.001, 0.0018+/-0.0002, and 0.0012+/-0.0001 mol C/mol absorbed quanta for vascular plants, mosses and lichens, respectively. Discriminant analysis of the spectra reflectance of these patches identified five spectral bands that separated each of these vegetation functional types as well as nongreen material (bare soil, standing water, and dead leaves). These results were tested along a 100 m transect where midsummer spectral reflectance and vegetation coverage were measured at one meter intervals. |
format |
Other/Unknown Material |
author |
Landis, David R. Tweedie, Craig Huemmrich, Karl F. Middleton, Elizabeth M. Gamon, John Campbell, Petya K. |
author_facet |
Landis, David R. Tweedie, Craig Huemmrich, Karl F. Middleton, Elizabeth M. Gamon, John Campbell, Petya K. |
author_sort |
Landis, David R. |
title |
Arctic Tundra Vegetation Functional Types Based on Photosynthetic Physiology and Optical Properties |
title_short |
Arctic Tundra Vegetation Functional Types Based on Photosynthetic Physiology and Optical Properties |
title_full |
Arctic Tundra Vegetation Functional Types Based on Photosynthetic Physiology and Optical Properties |
title_fullStr |
Arctic Tundra Vegetation Functional Types Based on Photosynthetic Physiology and Optical Properties |
title_full_unstemmed |
Arctic Tundra Vegetation Functional Types Based on Photosynthetic Physiology and Optical Properties |
title_sort |
arctic tundra vegetation functional types based on photosynthetic physiology and optical properties |
publishDate |
2013 |
url |
http://hdl.handle.net/2060/20130014409 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Tundra |
genre_facet |
Arctic Climate change Tundra |
op_source |
CASI |
op_relation |
Document ID: 20130014409 http://hdl.handle.net/2060/20130014409 |
op_rights |
Copyright, Distribution as joint owner in the copyright |
_version_ |
1766337402208518144 |