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Can Permafrost Soil Thaw be Characterized by Hyperspectral Reflectance and Plant Community Structure?
Responsible organisation
2015 (English)Independent thesis Basic level (degree of Bachelor)Student thesis
Abstract [en]

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.

Place, publisher, year, edition, pages
The University of Arizona. , 2015.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:polar:diva-3844OAI: oai:DiVA.org:polar-3844DiVA: diva2:1157620
Available from: 2017-11-16 Created: 2017-11-16 Last updated: 2017-11-16Bibliographically approved

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http://hdl.handle.net/10150/579278
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CiteExportLink to record
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