This thesis is divided in to two parts:
In the first part - A Preliminary Classification of the Engelmann
Spruce - Alpine Fir Forests at Bolean Lake, B. C. - some ecological concept
are discussed. The forest association is defined as an ecological unit
that includes the characteristics of climate, soil, topography, flora and
fauna; and is recognized by its floristic structure. The area studied is
described. Data were collected from selected temporary plot. Soil profile
was described and samples collected. Forest mensurational data were
collected on tenth-acre plots. Two forest associations can be considered
established. They are:
1. Picea Engelmannii - Abies Lasiocarpa - Vaccinium membranaceum -
Rubus pedatus association. (Engelmann spruce - alpine fir - black
huckleberry - trailing Rubus association). Designated the VM
association.
2. Picea Engelmannii - Abies lasiocarpa - Vaccinium membranaceum -
Dryopteris Linnaeana association, (Engelmann spruce - alpine fir -
tall blueberry - oak fern association). Designated the VO association.
Four other forest associations were tentatively identified. They are
described because they are of interest to foresters.
In the second part - An Evaluation of Two Forest Associations in
the Engelmann Spruce - Alpine Fir Forests at Bolean Lake, B.C. - forest
mensurational data from the vegetational plots were compared and analysed
with data from permanent sample plots established independently.
Differences in average height of dominant and codominant trees, in height
of average dominant tree, and in volumes between the VO and VM associations were found. These results indicate that the VO forest
association has better site quality than the VM forest association.
Differences were also found to composition, number of trees per acre
and in the distribution of stem size, these differences indicate
that the VO and VM associations will probably give different responses
to silvicultural treatment. / Forestry, Faculty of / Graduate
| Identifer | oai:union.ndltd.org:UBC/oai:circle.library.ubc.ca:2429/41584 |
| Date | January 1955 |
| Creators | Arlidge, Joseph Winston Churchill |
| Publisher | University of British Columbia |
| Source Sets | University of British Columbia |
| Language | English |
| Detected Language | English |
| Type | Text, Thesis/Dissertation |
| Rights | For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
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