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College of Forestry and Conservation
University of Idaho
RMRS

Vegetation: Vegetation Susceptibility

General

After Go> is clicked for Vegetation Layer (Select Layers screen), a dialog box (shown below) is displayed for entering 1) the name of the field that stores the vegetation types, and 2) the name of the field that stores the weed names in the Weed Layer.

First Vegetation Screen

After these field names are supplied, the Vegetation: Vegetation Susceptibility screen is displayed:

Second Vegetation Screen

The purpose of this screen is to specify the level of susceptibility of each vegetation category to each type of weed. Selections are made on the left portion of the screen and the Add>> button appends those combinations to the table displayed on the right portion of the screen. This screen is completed when each combination of vegetation type and weed are displayed in the table.

Screen Items

  • Select Vegetation Type: Select a vegetation type to be rated for susceptibility.
  • Select Weed: Select a weed to be rated.
  • Select Susceptibility: Select a level of susceptibility for the selected combination of vegetation type and weed. The susceptibility categories are:
    • C: Closed to invasion: The selected vegetation type is not susceptible to invasion by the selected weed.
    • D: Disturbance allows invasion: The selected vegetation type is susceptible to invasion by the selected weed only after a disturbance.
    • I: Invasive without disturbance: The selected vegetation type is susceptible to invasion by the selected weed even in the absence of a recent disturbance.