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Filters: Tags: National Vegetation Classification (X) > Types: Downloadable (X)

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The Central Mojave Special Features shapefile provides point locations for known or potential places where vegetation alliances or unique stands occurred (from 1997-1999) with less than 5 hectares of spatial extent. These designations were provided separately from the Mojave Vegetation Polygons because the target standard for the polygons was a minimum mapping unit (MMU) of 5 hectares, thus methods used at the time to assign labels precluded mapping these special features as polygons. The special features points are still included because it is important to note the known or potential location of vegetation alliances for future mapping at finer spatial resolution. The metadata record (Mojave-Vegetation-Mapping_Special-Features-Points-Metadata.xml)...
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The Central Mojave Vegetation Polygons shapefile represents areas of the Mojave Desert classified into vegetation classes or alliances representative of the area from 1997-1999. The classification of these areas were derived from context gathered in the field data, repeat photographs and additional satellite imagery that is not included in this data release. The original map coverage was preserved and released as a shapefile (mojave_veg_polygons.shp). In contrast to the Special Features Points vegetation classifications (described in the Special Features Points shapefile metadata record and ScienceBase item), the Central Mojave Vegetation Polygons were designated by vegetation alliances that extended 5 hectares...
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The Central Mojave Vegetation Map (mojveg.e00) displays vegetation and other land cover types in the eastern Mojave of California. Map labels represent alliances and groups of alliances as described by the National Vegetation Classification. The nominal minimum mapping unit is 5 hectares. Each map unit is labeled by a primary land cover type and a secondary type where applicable. In addition, the source of data for labeling each map unit is also identified in the attribute table for each map unit. Data were developed using field visits, 1:32,000 aerial photography, SPOT satellite imagery, and predictive modeling.
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The Mojave Plots Points data are 1,219 plot locations in the Central Mojave Desert where field data were recorded and repeat photographs were taken from 1997-1999 to provide context for the classification of the Central Mojave Desert into various vegetation classes. The 1,219 plot locations in the plots points shapefile (plots_points.shp) are each assigned a unique identifier called the FinalPlotCode. The FinalPlotCode can be used to match the shapefile points to the Mojave Field Data. The attached CSV file (Mojave_Images_Crosswalk.csv) can be used to relate the FinalPlotCodes to the associated repeat photographs that are attached as zipped TIFF images to the ScienceBase page. There are 1,695 total repeat photographs...


    map background search result map search result map Central Mojave Desert Vegetation Mapping Project, California, 1997-1999: Mojave Vegetation Polygons Central Mojave Desert Vegetation Mapping Project, California, 1997-1999: Plots Points and Repeat Photographs Central Mojave Desert Vegetation Mapping Project, California, 1997-1999: Special Features Points BLM REA MBR 2010 Central Mojave Vegetation Map BLM REA MBR 2010 Central Mojave Vegetation Map Central Mojave Desert Vegetation Mapping Project, California, 1997-1999: Mojave Vegetation Polygons Central Mojave Desert Vegetation Mapping Project, California, 1997-1999: Special Features Points Central Mojave Desert Vegetation Mapping Project, California, 1997-1999: Plots Points and Repeat Photographs