2. July 2006
Information in AVI 2.1
• Tree species
• Stand heights
• Crown closure
• Moisture Regime
• Origin
• Stand modifiers
• Naturally non-forested types
• Anthropogenic land-types
• Timber Productivity
mC19Fa7Se3
86-F
3. July 2006
Tree Species
DECIDUOUS
• Aspen
• Poplar
• Birch
CONIFEROUS
• Lodgepole Pine
• Douglas Fir
• White Spruce
• Subalpine Fir
• Engelmann Spruce
• Black Spruce
• Larch Tamarack
• Balsam Fir
22. July 2006
Stand Modifier Information
• Type – What type of action has impacted
the stand?
• Extent – How much of the stand was
impacted by the modifying action?
• Year – What year did this modifying action
occur?
37. July 2006
Anthropogenic Non-Vegetated
• Settlement Areas
– Cities, Towns, Villages, Hamlets
– Ribbon Development
• Industrial Development
– Industrial, Surface Mines, Gravel Pits, Peat Extractions
– Agriculture: Farmsteads
– Permanent Rights-of-Way, Roads, Railway, Trails,
Dam Sites
38. July 2006
Remember:
• The feature must be at least 20m wide. This
removes some linear features from
stratification since they are too small to
capture.
• The feature should be not smaller than 2
hectares. 1 Hectare for important features
such as wellsites.
44. July 2006
Anthropogenic Vegetated (= “C”)
• Influenced by man
• Usually in areas that have been planted with
cultivated species (ie. cropland)
• Areas cleared (ie. for pasture) and generally
not seeded back to native species
• Potentially non-native species
53. July 2006
Know Your Data
• What is the minimum size or width a
feature must be in order for it to be
captured?
• What is the date of the photography?
• What are the known issues?
• How many field plots were put in?
• What inventory version was followed?
• Was the dataset ever audited?
56. July 2006
Don’t lose the forest for the trees…
• Know what ecosystem(s) or natural
subregions you are working in and what
their characteristics are.
• Know your plant/tree species associations.
• Know your tree species’ site preferences.
• Know your tree species’ ranges of
occurrence.
