Land Cover Habitat Data: Forest and Range 2003 Assessment
Table of Contents Data Development
Results Source Data
Public Review and Comment
CWHR Classification System
Version Change-log
Future Plans
Assessment of Habitat Diversity
Habitat Types: State-County (v02_2)
Custom Query
Interactive Habitat Maps
FIA Comparisons
Source Data Links
Source Data Evaluation
Cross Walks

Related Data, Maps, and Publications
Data Related Data
Maps Related Maps
Publications Methods for Development of Habitat Acres, Forest and Range Assessment 2002

FRAP Multi-Source Vegetation

Land cover data provide the basis for FRAP analyses of wildlife habitat, water, grazing, and development impacts. No single mapping effort provides GIS data adequate to address this broad range of issues. Efforts to map land cover statewide typically provide insufficient resolution to capture types that occur as "inclusions", such as wet meadows, riparian areas, or certain types of development. Other efforts tend to focus on mapping land cover for a specific geographic area (e.g. bioregion, national park), or theme (e.g. wetlands, farmland). Since resources were targeted to a narrow focus, many of these efforts can make a reasonable claim to be the "best" for their respective area or theme. In order to provide the most solid basis for our analyses, FRAP staff made the decision to take advantage of these sources and merge them into a single GIS data layer.

Merging data from multiple sources required addressing differences in scale, resolution, and consistency. In addition, each data source had to be cross-walked into a common classification system ( California Wildlife Habitat Relationships, CWHR).

For More Information

Mark Rosenberg (CDF) at or by phone at (916) 445-5366

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