Skip to main content
USGS - science for a changing world

Current Distribution of Sagebrush and Associated Vegetation in the Columbia Basin and Southwestern Regions

Dates

Publication Date
Start Date
1999
End Date
2003

Summary

A new regional dataset was produced using decision tree classifier and other techniques to model landcover. Multi-season satellite imagery (Landsat ETM+, 1999-2003) and digital elevation model (DEM) derived datasets (e.g. elevation, landform, aspect, etc.) were utilized to derive rule sets for the various landcover classes. Eleven mapping areas, each characterized by similar ecological and spectral characteristics, were modeled independently of one another. An internal validation for modeled classes was performed on a withheld 20% of the sample data to assess model performance. Results of the validation will be presented in the final report and are not available at this time. Mapping area models were mosaicked to create the Columbia [...]

Contacts

Attached Files

Click on title to download individual files attached to this item.

fre30292.xml
Original FGDC Metadata

View
22.84 KB

Purpose

The digital landcover dataset may be used for various purposes with user's discretion. Specifically, this dataset was created for assessments of shrubland and associated landcover types. These data are not intended to be used at scales larger than 1:100,000.

Map

Communities

  • Forest and Rangeland Ecosystem Science Center (FRESC)

Tags

Provenance

Data source
Input directly

Item Actions

View Item as ...

Save Item as ...

View Item...