File Geodatabase Feature Class
Tags
vegetation, Mojave Desert, Desert Renewable Energy Conservation Plan, vegetation classification, Inyo County, Kern County, Los Angeles County, Riverside County, San Bernardino County, Imperial County
The purpose of the vegetation map is to assist with the Desert Renewable Energy Conservation Plan (DRECP). This map will provide planners with detailed information to help identify high quality habitat and rare communities. Although the primary purpose of the map is to document vegetation communities, it also provides structural data such as herbaceous, shrub and tree cover, and information about the level of disturbance within the vegetation stand. These are important habitat factors for species covered in the DRECP, including the Mojave Ground Squirrel and Desert Tortoise. Please read the attribute descriptions for caveats.
Aerial Information Systems (AIS) and the California Department of Fish and Wildlife (CDFW) Vegetation Classification and Mapping Program (VegCAMP) with assistance from the California Native Plant Society (CNPS) created a fine-scale vegetation map of portions of the Mojave and Colorado Deserts in California. Approximately six million acres spanning desert portions of Inyo, Kern, Los Angeles, San Bernardino, Riverside, and Imperial Counties were mapped between 2011 and 2012. In addition, mapping of 95,981acres within a portion of Rice and Vidal Valleys in the Colorado Desert portion of the Sonoran Desert was completed by AIS in 20132014. The maps were primarily produced to support the Desert Renewable Energy Conservation Plan (DRECP) by helping planners more accurately identify high quality habitat and rare communities as they consider renewable energy sources and conservation opportunities. Previous vegetation maps of the area were either large scale and generalized or they were detailed but covered a limited extent. Between 2014 and 2016, as an extension to supplement those mapping efforts, AIS was tasked to create a finescale vegetation map of 2,195,415 acres of desert in Inyo, San Bernardino, Riverside, and Imperial Counties in southern California. Areas mapped include the eastern and central portions of the Mojave Desert as well as the Lower Colorado Valley, also referred to as the Colorado Desert, and the Arizona Upland subdivisions of the Sonoran Desert.
The vegetation classification follows Federal Geographic Data Committee (FGDC) and National Vegetation Classification Standards (NVCS). The classification is based on previous survey and classification work. The map was produced applying heads-up digitizing techniques using a base of true-color and color infrared 2010, 2014, or 2016 one-meter National Agricultural Imagery Program (NAIP) imagery in conjunction with ancillary data and imagery sources. Map polygons were assessed for Vegetation Type, Percent Cover, Exotics, Development Disturbance, and other attributes. The minimum mapping unit (MMU) is 10 acres; exceptions are made for wetlands and certain wash types (which were mapped to a one or five acre MMU) and areas characterized as Land Use polygons (which were mapped to a 2.5 acre MMU). Field reconnaissance and accuracy assessment enhanced map quality. A total of 68,992 map polygons representing 154 vegetation map classes were developed.
For detailed information please refer to the following reports:
Data was produced by Aerial Information Systems, CDFW's Biogeographic Data Branch and the University of California, Riverside Center for Conservation Biology.
CDFW appreciates learning how our datasets are being used so that we can leverage support for classifying and mapping new areas and let users know of any updates.
License: This work is licensed under Creative Commons Attribution 4.0 International License ( https://creativecommons.org/licenses/by/4.0/ ). Using the citation standards recommended for BIOS datasets ( https://www.wildlife.ca.gov/Data/BIOS/Citing-BIOS ) satisfies the attribution requirements of this license.
Disclaimer: The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.
Extent
West | -118.823919 | East | -114.014171 |
North | 35.943367 | South | 32.559536 |
Maximum (zoomed in) | 1:5,000 |
Minimum (zoomed out) | 1:150,000,000 |
CDFW appreciates learning how our datasets are being used so that we can leverage support for classifying and mapping new areas and let users know of any updates.
License: This work is licensed under Creative Commons Attribution 4.0 International License ( https://creativecommons.org/licenses/by/4.0/ ). Using the citation standards recommended for BIOS datasets ( https://www.wildlife.ca.gov/Data/BIOS/Citing-BIOS ) satisfies the attribution requirements of this license.
Disclaimer: The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.
This work is licensed under Creative Commons Attribution 4.0 International License . You are free to use, copy, build upon, and redistribute this work per the terms of the license.