FOR200H1 Lecture Notes - Lecture 2: Sodium Chloride, Urban Forestry, Ecological Land Classification

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11 Oct 2017
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FOR200 Lecture 2 - Urban Forest Conservation. September 18th, 2017
Lecture Outline:
Urban forest structure.
Urban forest function/benefits.
Urban forest value.
Stresses in the urban forest environment.
Urban forest management.
Urban Forests:
Urban forests: are trees, forests, green space, and the related abiotic, biotic and
cultural components in areas extending from the urban core to the rural fringe.
Urban Forest Structure:
Site factors:
Soil.
Climate.
Tree factors:
Age.
Genetic diversity.
Canopy cover.
Leaf-area density.
Site Factors - Climate:
Latitude and longitude:
Differences in species, genera, families.
Altitude:
Tree line determines tree types.
Slope and aspect.
Site Factors - Soil:
Quantity:
For every 1 meter of forest canopy, 0.61 m3 is needed of soil.
We must plan for adequate growing space.
Quality:
Texture
Compaction
Drainage
Nutrient status
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Macronutrients and micronutrients.
Contamination
Contaminants leach into soil.
Figure 1: Sudbury, Ontario.
Sudbury is an example of poor soil quality, inadequate quantity, and then successful
ecological remediation.
Land Classification Systems:
Ecological land classification.
Vegetation sampling protocol.
Figure 2: Tree Factors - Age.
Even-aged forests are the most common in cities due to monocultures.
Tree Factors - Genetic Diversity:
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