Calibration and Validation of Landsat Tree Cover in the Taiga−Tundra Ecotone
Monitoring current forest characteristics in the taiga−tundra ecotone (TTE) at multiple scales is critical for understanding its vulnerability to structural changes. A 30 m spatial resolution Landsat-based tree canopy cover map has been calibrated and validated in the TTE with reference tree cover d...
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ftmdpi:oai:mdpi.com:/2072-4292/8/7/551/ 2023-08-20T04:10:05+02:00 Calibration and Validation of Landsat Tree Cover in the Taiga−Tundra Ecotone Paul Montesano Christopher Neigh Joseph Sexton Min Feng Saurabh Channan Kenneth Ranson John Townshend agris 2016-06-29 application/pdf https://doi.org/10.3390/rs8070551 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/rs8070551 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 8; Issue 7; Pages: 551 Landsat tree canopy cover forest structure taiga tundra ecotone uncertainty Text 2016 ftmdpi https://doi.org/10.3390/rs8070551 2023-07-31T20:54:41Z Monitoring current forest characteristics in the taiga−tundra ecotone (TTE) at multiple scales is critical for understanding its vulnerability to structural changes. A 30 m spatial resolution Landsat-based tree canopy cover map has been calibrated and validated in the TTE with reference tree cover data from airborne LiDAR and high resolution spaceborne images across the full range of boreal forest tree cover. This domain-specific calibration model used estimates of forest height to determine reference forest cover that best matched Landsat estimates. The model removed the systematic under-estimation of tree canopy cover >80% and indicated that Landsat estimates of tree canopy cover more closely matched canopies at least 2 m in height rather than 5 m. The validation improved estimates of uncertainty in tree canopy cover in discontinuous TTE forests for three temporal epochs (2000, 2005, and 2010) by reducing systematic errors, leading to increases in tree canopy cover uncertainty. Average pixel-level uncertainties in tree canopy cover were 29.0%, 27.1% and 31.1% for the 2000, 2005 and 2010 epochs, respectively. Maps from these calibrated data improve the uncertainty associated with Landsat tree canopy cover estimates in the discontinuous forests of the circumpolar TTE. Text taiga Tundra MDPI Open Access Publishing Remote Sensing 8 7 551 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
Landsat tree canopy cover forest structure taiga tundra ecotone uncertainty |
spellingShingle |
Landsat tree canopy cover forest structure taiga tundra ecotone uncertainty Paul Montesano Christopher Neigh Joseph Sexton Min Feng Saurabh Channan Kenneth Ranson John Townshend Calibration and Validation of Landsat Tree Cover in the Taiga−Tundra Ecotone |
topic_facet |
Landsat tree canopy cover forest structure taiga tundra ecotone uncertainty |
description |
Monitoring current forest characteristics in the taiga−tundra ecotone (TTE) at multiple scales is critical for understanding its vulnerability to structural changes. A 30 m spatial resolution Landsat-based tree canopy cover map has been calibrated and validated in the TTE with reference tree cover data from airborne LiDAR and high resolution spaceborne images across the full range of boreal forest tree cover. This domain-specific calibration model used estimates of forest height to determine reference forest cover that best matched Landsat estimates. The model removed the systematic under-estimation of tree canopy cover >80% and indicated that Landsat estimates of tree canopy cover more closely matched canopies at least 2 m in height rather than 5 m. The validation improved estimates of uncertainty in tree canopy cover in discontinuous TTE forests for three temporal epochs (2000, 2005, and 2010) by reducing systematic errors, leading to increases in tree canopy cover uncertainty. Average pixel-level uncertainties in tree canopy cover were 29.0%, 27.1% and 31.1% for the 2000, 2005 and 2010 epochs, respectively. Maps from these calibrated data improve the uncertainty associated with Landsat tree canopy cover estimates in the discontinuous forests of the circumpolar TTE. |
format |
Text |
author |
Paul Montesano Christopher Neigh Joseph Sexton Min Feng Saurabh Channan Kenneth Ranson John Townshend |
author_facet |
Paul Montesano Christopher Neigh Joseph Sexton Min Feng Saurabh Channan Kenneth Ranson John Townshend |
author_sort |
Paul Montesano |
title |
Calibration and Validation of Landsat Tree Cover in the Taiga−Tundra Ecotone |
title_short |
Calibration and Validation of Landsat Tree Cover in the Taiga−Tundra Ecotone |
title_full |
Calibration and Validation of Landsat Tree Cover in the Taiga−Tundra Ecotone |
title_fullStr |
Calibration and Validation of Landsat Tree Cover in the Taiga−Tundra Ecotone |
title_full_unstemmed |
Calibration and Validation of Landsat Tree Cover in the Taiga−Tundra Ecotone |
title_sort |
calibration and validation of landsat tree cover in the taiga−tundra ecotone |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2016 |
url |
https://doi.org/10.3390/rs8070551 |
op_coverage |
agris |
genre |
taiga Tundra |
genre_facet |
taiga Tundra |
op_source |
Remote Sensing; Volume 8; Issue 7; Pages: 551 |
op_relation |
https://dx.doi.org/10.3390/rs8070551 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs8070551 |
container_title |
Remote Sensing |
container_volume |
8 |
container_issue |
7 |
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551 |
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1774724022899048448 |