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Permanent link (DOI): https://doi.org/10.7939/R3DN3ZW2G

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Bluff Mountain, Northeast Slopes. Historic Vegetation Change 1913-2008 Open Access

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Author or creator
Stockdale, Chris
Additional contributors
Higgs, Eric
Macdonald, Ellen
Subject/Keyword
Vegetation dynamics--Research
Canada--Crowsnest Pass--Repeat photography
Type of item
Image
Language
No linguistic content
Place
Bluff Mountain, Crowsnest Pass, AB
Time
Description
The Mountain Legacy Project, the largest repeat photography collection in the world, has more than 6,000 images repeated to date. Previously it was not possible to precisely measure how much and where this change had occurred using oblique angle photographs such as these.  I have developed a method to overlay a spatially referenced grid onto the images in order to classify the vegetation. Each red grid cell represents 1 hectare, and geographic coordinates are computed using software from the Swiss Institute of Forestry. Grid cells have been overlaid on the image, but not all grid cells are shown.  The two panels at the bottom show an overhead view in ArcGIS of the outputs of this analysis for a single image pair taken in the Crowsnest Pass. The output allows us to see how much has changed, and where the change has occurred. It is clear in the images and output that there is more forest and less grass in 2008 than there was in 1913. In my PhD research, I used  this procedure with 124 image pairs to document landscape change over an area 85km x 45km in the southern Alberta Rocky Mountains from 1913-2008. // Program of Study: PhD // Faculty/Department: Renewable Resources // Place of creation: Bluff Mountain, Crowsnest Pass, AB
Date created
2016
DOI
doi:10.7939/R3DN3ZW2G
License information
Attribution 4.0 International
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2016-07-28T16:45:41.625357899MDT
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