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Roads and Railways

The changing state of major roads in southern Ontario between 1935 and 1995 serves as an effective and visual indicator of population and land-use changes. These 10-year time slices help monitor the increase in paved roads, including multi-lane highways, and provide insights into the increasing road density within specific regions. For example, it is interesting to note the changes surrounding Algonquin Park and to project future rates of change to meet the increasing population  demands.
 

Road density in Southern Ontario in:

Source:  Taylor, B. A. Fenech, R. Hansell and G. Whitelaw. 2000. Changes in Major Roads in Southern Ontario 1935-1995, Workshop on Decoding Canada's Environmental Past: Integrated Mapping Assessments of Changing Vulnerability and Variability in Climate, Biodiversity, Land-Use and Built Environments, the 6th EMAN National Science Meeting, Jan. 21st.

Road Changes (36 KB jpg image)
Source: Taylor, B. A. Fenech, R. Hansell and G. Whitelaw. 2000. Major Road Changes in Southern Ontario 1935-1995, Workshop on Decoding Canada's Environmental Past: Integrated Mapping Assessments of Changing Vulnerability and Variability in Climate, Biodiversity, Land-Use and Built Environments, the 6th EMAN National Science Meeting, Jan. 21st.

Canadian Railway map (107 KB jpg image), small version (65 KB jpg image)
Rail roads with 250 meter buffers to control emissions from train activities along the way.
Source:  Ratté, Dominique. 2000. Per. Comm. Spatial Information Analyst, Pollution Data Branch, Environment Canada, Mar, 8th.

Road map sample of Ontario (149 KB jpg image), small version (91 KB jpg image)
Source: Ratté, Dominique. 2000. Per. Comm. Spatial Information Analyst, Pollution Data Branch, Environment Canada, Mar, 8th.

Salt Loadings by Maintenance District (66 KB jpg image)
Source: Morin, D. 2000. GIS and the Road Salt PSL2 Assessment. GIS Workshop, Burlington Feb 15-17, 2000.
 

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