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Ecological Site Descriptors

The official list of ESD metrics and their definitions.

Supplier   ESD ID Descriptive
Name
ESD
Description
ESD
Calculation
Units of
Measure
Data
Type
Min
Value
Max
Value
Decimal
Digits
Accepted
Values
U S D A Forest Service IFG-ASPECT Plot Aspect Overall aspect of the plot, measured in degrees with compass. Numeric 0 500 0
U S D A Forest Service IFG-EnvContext Environmental Context Class (IFG) Env Context: R, riparian or valley bottom; S, slope; LS, low slope; F, flat Enumeration N/A N/A N/A R, S, LS, F
U S D A Forest Service IFG-HABITAT Habitat Type Habitat type. Text 0
U S D A Forest Service IFG-PASSOC Associated Tree Species Plant association is the species of trees associated in the collection site. If only one species listed with the rest in blanks means that it is (more or less) a monspecific or pure stand of that species. The order in which they are listed is generally based on their overall representation at the site from high to low. Text 0
U S D A Forest Service IFG-SLOPE Average Slope Average slope of plot as a %; measured with declinometer. Numeric 0 100 0