Can Permafrost Soil Thaw be Characterized by Hyperspectral Reflectance and Plant Community Structure?
I investigated (1) whether stages of permafrost thaw were consistently associated with plant community composition and other land surface characteristics; (2) whether those different land surface characteristics could be consistently distinguished with remote sensing tools in a sub-arctic mire. I ut...
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ndltd-arizona.edu-oai-arizona.openrepository.com-10150-5792782015-10-23T05:47:38Z Can Permafrost Soil Thaw be Characterized by Hyperspectral Reflectance and Plant Community Structure? Garnello, Anthony John Junqueira Saleska, Scott I investigated (1) whether stages of permafrost thaw were consistently associated with plant community composition and other land surface characteristics; (2) whether those different land surface characteristics could be consistently distinguished with remote sensing tools in a sub-arctic mire. I utilized plant area cover and topography to identify five distinct site-types as being characteristic of different stages of permafrost thaw, and 50 one square-meter plots were measured for species-specific area cover and pole-based hyperspectral reflectance. A Tukey-HSD comparison test showed that plant functional group richness decreased with permafrost thaw, and could readily be used to differentiate between stages of thaw. A discrete, stepwise canonical classification function with bootstrap cross validation showed a mean classification error rate of 7.3% +/- 7.3% (6.8%-9.65% 95% Confidence Interval). These results showed successful ground-truthing methods for regional-scale landscape classification, allowing for high temporal and spatial resolution of circumpolar permafrost thaw monitoring. 2015 text Electronic Thesis http://hdl.handle.net/10150/579278 en_US Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. The University of Arizona. |
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description |
I investigated (1) whether stages of permafrost thaw were consistently associated with plant community composition and other land surface characteristics; (2) whether those different land surface characteristics could be consistently distinguished with remote sensing tools in a sub-arctic mire. I utilized plant area cover and topography to identify five distinct site-types as being characteristic of different stages of permafrost thaw, and 50 one square-meter plots were measured for species-specific area cover and pole-based hyperspectral reflectance. A Tukey-HSD comparison test showed that plant functional group richness decreased with permafrost thaw, and could readily be used to differentiate between stages of thaw. A discrete, stepwise canonical classification function with bootstrap cross validation showed a mean classification error rate of 7.3% +/- 7.3% (6.8%-9.65% 95% Confidence Interval). These results showed successful ground-truthing methods for regional-scale landscape classification, allowing for high temporal and spatial resolution of circumpolar permafrost thaw monitoring. |
author2 |
Saleska, Scott |
author_facet |
Saleska, Scott Garnello, Anthony John Junqueira |
author |
Garnello, Anthony John Junqueira |
spellingShingle |
Garnello, Anthony John Junqueira Can Permafrost Soil Thaw be Characterized by Hyperspectral Reflectance and Plant Community Structure? |
author_sort |
Garnello, Anthony John Junqueira |
title |
Can Permafrost Soil Thaw be Characterized by Hyperspectral Reflectance and Plant Community Structure? |
title_short |
Can Permafrost Soil Thaw be Characterized by Hyperspectral Reflectance and Plant Community Structure? |
title_full |
Can Permafrost Soil Thaw be Characterized by Hyperspectral Reflectance and Plant Community Structure? |
title_fullStr |
Can Permafrost Soil Thaw be Characterized by Hyperspectral Reflectance and Plant Community Structure? |
title_full_unstemmed |
Can Permafrost Soil Thaw be Characterized by Hyperspectral Reflectance and Plant Community Structure? |
title_sort |
can permafrost soil thaw be characterized by hyperspectral reflectance and plant community structure? |
publisher |
The University of Arizona. |
publishDate |
2015 |
url |
http://hdl.handle.net/10150/579278 |
work_keys_str_mv |
AT garnelloanthonyjohnjunqueira canpermafrostsoilthawbecharacterizedbyhyperspectralreflectanceandplantcommunitystructure |
_version_ |
1718110008497930240 |