The Nature Conservancy Site Selection Model
Categories
|
INDEX
|
ATTRIBUTES
|
VALUES
|
WEIGHT
|
PRIORITY
|
| Size |
|
|
|
|
|
Area |
total
acres, area of interior & edge |
|
|
|
Shape |
area/perim.
ratio, core area size & %, roundness index |
|
|
|
Adjacency |
min,
max, mean neighbor size |
|
|
|
Boundaries |
min,
max, mean of surrounding road class/traffic volume |
|
|
| Condition |
|
|
|
|
|
Old
growth core |
acres,
quality, dbh, age structure |
|
|
|
Disturbance
level |
%,
#, & min, max, mean size of disturbance patches |
|
|
|
Interior
roads and trails |
miles
of road and trail, traffic volumes |
|
|
|
Site
quality |
site
BRANK(s) |
|
|
|
Land
use history |
%
of past land use types |
|
|
|
Fragmentation
statistics |
dissection,
linearity, etc. |
|
|
| Diversity |
|
|
|
|
|
Species
summaries |
#,
variety, & EORANKS of EOs and GAP habitat ranges |
|
|
|
Community
summaries |
#,
variety, & EORANKS of EOs and FIA stand types |
|
|
|
Land
cover summaries |
#,
%s, & variety of GAP vegetation cover types |
|
|
|
Topographic
summaries |
#,
%s, & variety of elevation, slope, aspect, topo shape classes |
|
|
|
Geologic
summaries |
#,
%s, & variety of soil & surficial geology classes |
|
|
|
Hydrologic
summaries |
miles
of stream, acres & # of ponds & wetlands |
|
|
|
Fragmentation
statistics |
patchiness,
variety, contagion, etc... |
|
|
| Landscape
context |
|
|
|
|
|
Management
status |
%
in each status class |
|
|
|
Current
land use |
#,
%s, & variety of land use types |
|
|
|
Management
potential |
partner
priority area, local zoning, restoration potential |
|
|
|
Watershed
attributes |
water
quality, aquifer overlay, regulatory protection |
|
|
|
Demographics |
population
density, growth rate, income, political affiliations |
|
|
|
Positive
proximities |
MAs,
significant water bodies, irreplaceable sites |
|
|
|
Negative
proximities |
distance
to cities, highways, threats |
|
|
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