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Remote Sens. 2009, 1(4), 896-914; doi:10.3390/rs1040896

Regional Assessment of Aspen Change and Spatial Variability on Decadal Time Scales

Boise Center Aerospace Laboratory, Idaho State University, 322 E. Front Street Suite 240, Boise, ID 83702-7359, USA
Received: 18 September 2009 / Revised: 20 October 2009 / Accepted: 5 November 2009 / Published: 10 November 2009
(This article belongs to the Special Issue Ecological Status and Change by Remote Sensing)
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Abstract

Quaking aspen (Populus tremuloides) is commonly believed to be declining throughout western North America. Using a historical vegetation map and Landsat TM5 imagery, this study detects changes in regional aspen cover over two different time periods of 85 and 18 years and examines aspen change patterns with biophysical variables in the Targhee National Forest of eastern Idaho, USA. A subpixel classification approach was successfully used to classify aspen. The results indicate greater spatial variability in regional aspen change patterns than indicated by local-scale studies. The observed spatial variability appears to be an inherent pattern in regional aspen dynamics, which interacts with biophysical variables, but persists over time.
Keywords: aspen abundance; change detection; Landsat TM; mixture tuned matched filtering; GIS aspen abundance; change detection; Landsat TM; mixture tuned matched filtering; GIS
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Sankey, T.T. Regional Assessment of Aspen Change and Spatial Variability on Decadal Time Scales. Remote Sens. 2009, 1, 896-914.

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