Geography Reference
In-Depth Information
Conservation
2050
Plan trend
2050
Pre-EuroAmerican
settlement
Circa 1990
N
Agriculture
S
Projection UTM Zone 10
Hybrid poplar
Grass seed rotation
Irrigated annual rotation
Grains
Nursery
Development
2050
Berries & vineyards
Double cropping
Hops
Mint
Radish seed
Sugar beet seed
Row crop
Natural & native vegetation
Upland Forest open
Upland Forest semi-closed mixed
Forest closed hardwood
Forest closed mixed
Built features
Upland Forest semi-closed conifer
Residential 0 - 4 DU/ac
Conifers 0 - 20 yrs.
Grass
Burned grass
Water & physiographic features
Residential 4 - 9 DU/ac
Residential 9 - 16 DU/ac
Residential > 16 DU/ac
Commercial
Commercial/Industrial
Forest closed conifer 21 - 40 yrs.
Forest closed conifer 41 - 60 yrs.
Forest closed conifer 61 - 80 yrs.
Forest closed conifer 81 - 200 yrs.
Forest closed conifer older than 200 yrs.
Field crop
Main channel non-vegetated
Stream orders 5 - 7
Permanent lentic water
Topographic shadow
Snow
Barren
Hayfield
Late field crops
Pasture
Base/fallow
Irrigated perennial
Turfgrass
Urban tree overstory
Orchard
Christmas trees
Conifer Woodlot
Upland Forest semi-closed hardwood
Natural grassland
Natural shrub
Industrial
Residential & commercial
Rural structures
Railroad
Primary roads
Secondary roads
Light duty roads
Unknown
Flooded/marsh
Oak Savanna
Urban non-vegetated unknown
Rural non-vegetated unknown
Unknown
Wet shrub
Wet prairie
Figure 12.1 Maps of the Willamette River basin ca. 1850, 1990, and three alternative scenarios of the future - Plan Trend 2050
depicting landscape patterns that would emerge based on current policies and practices, Development 2050 depicting outcomes if
environmental policies are relaxed, and Conservation 2050 depicting landscape patterns that would be likely if conservation policies
and practices are strengthened and expanded. All future scenarios include a doubling of the human population.
equation relating the no-change pixels in the uncorrected
image to the same pixels in the reference image (Oetter
et al., 2001). Given the number of spectral bands across
five different dates and the large geographic study area,
each image was subset to the first three tassled cap trans-
formation bands to save file space and allow for physical
interpretation of band values.
The basin was sub-divided into four mapping units:
1) the forest area previously mapped in the 1988 Western
Oregon forest cover project (Cohen et al., 2001), 2) urban
area within the basin as defined by the state's urban
growth boundary zoning distinctions, 3) other forest area
mainly in the valley floor, and 4) non-forest agricultural
and natural areas.
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