LIBRARY: VEGETATION FOR PROJECT 1 LAYER NAME: PRJ1GDVG LOCATION: grid1 GRID DESCRIPTION: The Humboldt State University Spatial Analysis Laboratory (HSU, SA-Lab) began development of a landscape database using 1:100,000 scale public domain data sets and Landsat satellite imagery, in 1995. This primary effort, The Klamath Bioregional Assessment Project, has produced spatially referenced data for a 33 million acre bioregion, the southern ORegon & northern CAlifornia (ORCA) spatial domain. The Landsat spectral data (acquired by the satellite in the summer of 1994) were classified at the pixel level into wildlife habitat types, modified from the California Wildlife Habitat Relationships (CWHR) classification system. Version 1.0a of the raster, grid cell, ORCA Wildlife Habitat Map and Database was released in the fall of 1997 and is available on CD. The original vegetation cover (see Fox et al. - "A Wildlife Habitat Map and Database for the ORCA [Oregon-California] Klamath Bioregion Derived from Landsat Imagery" [see shrv10a.doc in this directory]) was trimmed to focus on the watersheds found in the area impacted by the Pacific Lumber Company (PL). The current vegetation grid, a subset of the ORCA western domain, was derived from the original Landsat Thematic mapper scene, and modified into what is currently the KRIS Coho classification method. The subset was obtained by 1) creating a polygon in the shape of the study area, 2)converting the polygon into a grid via the polygrid function in Arc/Info Grid, 3) importing the grid as an image into ERDAS Imagine, 4) using the image in the shape of the study area to mask a subset (project area) of the the original classified image (see shrv10a.doc), 5) exporting the masked subset image as a grid out of ERDAS Imagine. It appears that the mask procedure in ERDAS causes a slight discrepancy between the subset image and the original, by up to one half pixel or less (15 meters). Although not catastrophic, this abberation is believed to be a problem with the image proceesing software, possibly a result of the resampling technique ERDAS uses to clip the original image, as it appears to round off to the nearest pixel (pixels being 30 meters x 30 meters). Efforts are currently under way in our laboratory to compensate for this software error. These data were recoded into 12 easily recognizable and distinguishable categories, and then exported into ARC/INFO as a grid file. Originally classified as 159 WHR classes, of which 98 are currently present in Pacific Northwestern California, the data set has been consolidated into 12 categories, as listed and defined below. VLARGE_TREE Total area of Late successional forest, > 36 in DBH LARGE_TREE Total area of Trees 24 - 36 inches DBH MEDIUM_TRE Total area of Trees 11 - 24 inches DBH SMALL_TREE Total area of TREES 6 - 11 inches DBH SHRUB/TREE Total area of TREES < 6 inches DBH, forest-shrub mix SHRUB Total area of Shrubs GRASS Total area of Grassland (Often represents disturbed areas) MEADOW/MAR Total area of Meadow &/or Marshland ROCK/SOIL Total area of Exposed Soil & Rock (Can represent disturbed areas) SNOW/ICE Total area of Snow & Ice (if present) CLOUDS Total area of Cloud Cover Interference WATER Total area of Water (Rivers, Lakes, Lagoons, etc.) These data were recoded from the original 159 WHR vegetation categories as follows. See Fox et al. 1997, "A Wildlife Habitat Map and Database for the ORCA (Oregon-California) Klamath Bioregion Derived from Landsat Imagery" (shrv10a.doc) for details regarding codes. Current Category Code Previous Category VLARGE_TREE MCN7D Mixed Conifer/Large/Closed LARGE_TREE MCN5D Mixed Conifer/Large/Closed MCN5M MCN5P Mixed Conifer/Large/Open MCN5S MCF5D Mixed Conifer/Large/Closed MCF5M MCF5P Mixed Conifer/Large/Open MCF5S MCP5D Mixed Conifer/Large/Closed MCP5M MCP5P Mixed Conifer/Large/Open MCP5S MCH5D Con-Hwd/Large/Closed MCH5M MCH5P Con-Hwd/Large/Open MCH5S MHC5D Hwd-Con/Large/Closed MHC5M MHC5P Hwd-Con/Large/Open MHC5S MHW5D Mixed Hardwood/Large/Closed MHW5M MHW5P Mixed Hardwood/Large/Open MHW5S MOW5D Mixed Oak Woodland/Large/Closed MOW5M MOW5P Mixed Oak Woodland/Large/Open MOW5M MJN5D Mixed Juniper/Pinyon/Large/Closed MJN5M MJN5P Mixed Juniper/Pinyon/Large/Open MJN5S MEDIUM_TRE MCN4D Mixed Conifer/Large/Closed MCN4M MCN4P Mixed Conifer/Large/Open MCN4S MCF4D Mixed Conifer/Large/Closed MCF4M MCF4P Mixed Conifer/Large/Open MCF4S MCP4D Mixed Conifer/Large/Closed MCP4M MCP4P Mixed Conifer/Large/Open MCP4S MCH4D Con-Hwd/Large/Closed MCH4M MCH4P Con-Hwd/Large/Open MCH4S MHC4D Hwd-Con/Large/Closed MHC4M MHC4P Hwd-Con/Large/Open MHC4S MHW4D Mixed Hardwood/Large/Closed MHW4M MHW4P Mixed Hardwood/Large/Open MHW4S MOW4D Mixed Oak Woodland/Large/Closed MOW4M MOW4P Mixed Oak Woodland/Large/Open MOW4M MJN4D Mixed Juniper/Pinyon/Large/Closed MJN4M MJN4P Mixed Juniper/Pinyon/Large/Open MJN4S SMALL_TREE MCN3D Mixed Conifer/Small/Closed MCN3M MCN3P Mixed Conifer/Small/Open MCN3S MCF3D Mixed Conifer/Small/Closed MCF3M MCF3P Mixed Conifer/Small/Open MCF3S MCP3D Mixed Conifer/Small/Closed MCP3M MCP3P Mixed Conifer/Small/Open MCP3S MCH3D Con-Hwd/Small/Closed MCH3M MCH3P Con-Hwd/Small/Open MCH3S MHC3D Hwd-Con/Small/Closed MHC3M MHC3P Hwd-Con/Small/Open MHC3S MHW3D Mixed Hardwood/Small/Closed MHW3M MHW3P Mixed Hardwood/Small/Open MHW3S MOW3D Mixed Oak Woodland/Small/Closed MOW3M MOW3P Mixed Oak Woodland/Small/Open MOW3M MJN3D Mixed Juniper/Pinyon/Small/Closed MJN3M MJN3P Mixed Juniper/Pinyon/Small/Open MJN3S SHRUB/TREE MCN2D Mixed Conifer/Small/Closed MCN2M MCN2P Mixed Conifer/Small/Open MCN2S MCF2D Mixed Conifer/Small/Closed MCF2M MCF2P Mixed Conifer/Small/Open MCF2S MCP2D Mixed Conifer/Small/Closed MCP2M MCP2P Mixed Conifer/Small/Open MCP2S MCH2D Con-Hwd/Small/Closed MCH2M MCH2P Con-Hwd/Small/Open MCH2S MHC2D Hwd-Con/Small/Closed MHC2M MHC2P Hwd-Con/Small/Open MHC2S MHW2D Mixed Hardwood/Small/Closed MHW2M MHW2P Mixed Hardwood/Small/Open MHW2S MOW2D Mixed Oak Woodland/Small/Closed MOW2M MOW2P Mixed Oak Woodland/Small/Open MOW2M MJN2D Mixed Juniper/Pinyon/Small/Closed MJN2M MJN2P Mixed Juniper/Pinyon/Small/Open MJN2S SHRUB SHGD Greenleaf Shrub/Closed SHGM SHGP Greenleaf Shrub/Open SHGS SHDD Deadstick Shrub/Closed SHDM SHDP Deadstick Shrub/Open SHDS SHSD Soft Shrub/Closed SHSM SHSP Soft Shrub/Open SHSS GRASS GSGD GreenGrass/Forb/Closed GSGM GSGP Green Grass/Forb/Open GSGS GSDD Dead Grass/Forb/Closed GSDM GSDP Dead Grass/Forb/Open GSDS MEADOW/MAR GSWD WetMeadow/Marsh/Closed GSWM GSWP WetMeadow/Marsh/Open GSWS ROCK/SOIL BSL Soil BGR Gravel/Rock/Pavement SNOW/ICE BSI Snow and Ice CLOUDS Clouds Cover and/or Interference WATER WTR Water UNCLASSIFIED UNCLASSIFIED Unidentified DOCUMENTATION DATES: 11/15/98: Vegetation layer clipped (using the Mask Function in ERDAS) to fit project study area Contact Name: P. J. Trichilo Spatial Information Systems Institute Humboldt State University (707) 826-5417