Description of classes used in the
Southern Michigan Statewide Map
This is an
explanation of the values present in the Southern Michigan Statewide raster
map, with the associated rules used to arrive at the class labels. Arabic
numbers in bold type are those included in the map. Classification scheme
should be viewed as a series of sequential if-then statements. Order counts.
For example, consider a forest stand where 50% of the canopy is
Class numbers were chosen in part to be similar to existing
MIRIS LandCover labels and their decision rule
sequence does not necessarily match the numeric order (for example class 110 follows class
122 in the decision rules).
Number in parentheses following classification name is the
grid value.
I Urban
Land
area greater than 10% manmade structures including paved and gravel roads and parking lots.
121 Airports (3)
Impervious land within airport grounds,
including runways.
122 Road/Parking
Roads or Parking Lots
123 High Intensity
Urban (2)
Land Area greater than 25% solid impervious cover made from
man-made materials, other than airports, roads, or parking lots.
11 Low Intensity
Urban (1)
Land area greater than 10% and less than 25% manmade structures
including paved and gravel roads and parking lots.
II Agricultural
Intensively managed for vegetation production excluding
forestry
2111 Non-vegetated
Farmland (5)
Land area tilled for crop production with less than 25%
currently vegetated
2112 Row
crops (6)
Vegetation is annual crops planted in rows (e.g. corn,
soybeans)
2113, 212 Forage
Crops/ Non-tilled herbaceous agriculture (7)
Vegetation
used for fodder production (e.g. alfalfa, hay). Also includes land used for
pasture, or non-tilled herbaceous agriculture.
221 Xmas
tree plantation (8)
Woody trees grown for Christmas trees. None mapped
in
222 Orchards/Vineyards/Nursery
(9)
Woody trees not grown for Christmas
trees.
III
Less than 25% of land area is covered by tree canopy. And greater than
25% of land area is vegetated.
350 Parks/Golf Courses
(13)
Maintained for recreational purposes
320,330 Upland Shrub/Low
Density Trees (12)
The combination of woody shrubs and tree canopy (woody
cover). covers more than 25% of the land area.
310 Herbaceous Openland (10)
Less than 25% of land area is occupied by woody cover.
IV
Proportion of trees exceeds 25% of land area
A. Upland Deciduous
Proportion of deciduous trees
exceeds 60% of the canopy
411 Northern
Hardwood Association (14)
Combination of Maples, Beech, Basswood, White Ash, Cherry,
Yellow Birch exceeds 60% of the canopy
412 Oak
Association (15)
Proportion of Oaks exceeds 60% of the canopy
413 Aspen
Association (16)
Proportion of
414 Other
Proportion of any other single species exceeds 60% of the
canopy
419 Mixed
Proportion of deciduous trees exceeds 60% of the canopy
B. Upland Coniferous
421/422 Pines
(19)
Proportion of pines exceeds 60% of the canopy
423 Other
Proportion of non-Pine upland conifers exceeds 60% of the
canopy
Proportion of coniferous trees exceeds 60% of the canopy.
None
mapped in
43
. Mixed forest not falling into any other
category. Proportion of Conifers to Deciduous ranges between 40%:60% to 60%:40%
V. Water
50 Water
(23)
Proportion of open water exceeds 75% of land area
LOWLAND
Land is periodically flooded and/or on hydric soils
VI.
Proportion of trees exceeds 25% of land area
611 Lowland
Deciduous
Proportion of deciduous trees exceeds 60% of the canopy
612 Lowland Coniferous
Proportion of coniferous trees exceeds 60% of the canopy
613 Lowland
Mixed
Mixed forest not falling into any other
category. Proportion of Conifers to Deciduous ranges between 40%:60% to 60%:40%
VII. Nonforested
Wetlands
Proportion of trees is less than or equal to 25% of
land area
621 Floating
Aquatic (27)
Proportion of floating aquatic vegetation exceeds 60% of
non-water cover
622 Lowland
Shrub (28)
Proportion of lowland shrub exceeds 60% of non-water cover
623 Emergent
Wetland (29)
Proportion of emergent vegetation exceeds 60% of non-water
cover
Non-forested wetlands not falling into any other category
VIII Bare/Sparsely
Vegetated
Land is less than 25% vegetated
710 Sand,Soil (31)
Land cover is formed primarily of sand or bare soil
720 Exposed
Rock (32)
Land Cover is formed of
solid rock. None mapped in
730 Mud Flats (33)
If periodically flooded
760
If on forest
lands.
None mapped in
790 Other
Bare/Sparsely Vegetated (35)