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1 . SUMMARY<br />
Soils were examined in three areas of the Mackenzie River basin :<br />
the Upper Mackenzie River and the Norman Wells and Inuvik areas .<br />
The soils were first described and classified according to<br />
the System<br />
of Soil Classification for Canada and then,<br />
the soils of the Upper<br />
Mackenzie River area were related to the Geological Survey of Canada<br />
landform based mapping units .<br />
The associated vegetation, parent<br />
materials, drainage and permafrost were also described . Physical and<br />
chemical properties and ice content were determined on representative<br />
soil profiles .<br />
Special attention was paid to organic soils, which are<br />
widespread in the area, and to perennially frozen soils, especially<br />
those which are affected by cryoturbation .<br />
It was found that, because of the large area involved,<br />
the climate<br />
was not uniform and thus it was necessary to subdivide the Upper<br />
Mackenzie River area into climatically significant ecological zones<br />
which were based on the distribution of soils, vegetation and permafrost .<br />
In each of these zones the soils were identified and related to<br />
the<br />
Geological Survey of Canada mapping units .
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