Tree size (quadratic mean diameter) for the Western Cascades Washington physiographic province of the Interagency Vegetation
Mapping Project (IVMP)
Dataset Identification:
Resource Abstract:
The Interagency Vegetation Mapping Project (IVMP) provides maps of existing vegetation, canopy cover, size, and cover
type for the entire range of the Northern Spotted Owl using satellite imagery from the Landsat Thematic Mapper (TM). This
area is commonly called the FEMAT area, in reference to the area's analysis by the Forest Ecosystem Management Assessment
Team. A regression modeling approach was used to predict vegetation characteristics from this Landsat data. This process involved
the use of numerous sources of ancillary data, the most crucial being USFS, BLM, and Forest Inventory and Analysis (FIA) plot
field data and plot photo interpreted information. This data served as training data in the regression modeling. The final
products include a vegetation cover prediction map, conifer cover prediction map, broadleaf cover prediction map, and size
prediction map. <br />
Citation
Title Tree size (quadratic mean diameter) for the Western Cascades Washington physiographic province of the Interagency Vegetation
Mapping Project (IVMP)