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Technical Thematic Report No. 3. - Guidance for the preparation of ESTR products – Land classification scheme for the ecosystem status and trends report



Aridity Index
Ratio of mean annual precipitation to mean annual potential evapotranspiration
% Cover/Crown Density
“The percentage of a given area covered by the vertical projection of the aerial parts of plants of one or more species (Federal Geographic Data Committee, Vegetation Subcommittee, 1997).”
Basal area
“The area of the circle formed by the cross-section of a tree take 1.3 m above the ground (BC Ministry of Forests and Range, 2005).”
“Trees classified botanically as Angiospermae in the subclass Dicotyledoneae; commonly referred to as deciduous or hardwoods” (National Forest Inventory, 2004)
“Bryoids are defined as bryophytes (mosses, liverworts and hornworts) and lichens (foliose or fruticose; not crustose)” (National Forest Inventory, 2004)
“Trees classified botanically as Coniferae; cone-bearing trees having needles or scale-like leaves, usually evergreen; commonly referred to as conifer or softwoods” (National Forest Inventory, 2004)
Vegetation which loses its foliage seasonally.
“Herbaceous plants other than graminoids, including ferns, club mosses, and horsetails.” (National Forest Inventory, 2004)
“Herbaceous plants with long, narrow leaves characterized by linear venation; including grasses, sedges, rushes, and other related species” (National Forest Inventory, 2004).
“Vascular plants without a woody stem, including ferns, fern allies, grasses, and grass-like plants.” (National Forest Inventory, 2004)
“Woody perennial plants, both evergreen and deciduous, that have a relatively low growth habit, and are generally multi-stemmed, rather than having one bole. They differ from a tree by their low stature (generally < 10 m) and non-treelike form” (National Forest Inventory, 2004).
A treeless area where growth is hindered by low temperatures and short growing seasons.

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