Vegetation - Sonoran Mojave Desert [ds3199]

California Department of Fish and Wildlife (CDFW) contracted Aerial Information Systems (AIS) to create a fine-scale vegetation map of portions of the Mojave Desert and Sonoran desert ecoregions that are not currently covered by existed fine-scale vegetation mapping, an area of 4,399,242 acres. The mapping area encompasses multiple counties including Inyo County, Riverside County and San Bernardino County. The minimum mapping unit (MMU) is 10 acres for desert types and 1 acre for non-desert types. For special stands including: wetlands, riparian, and rock outcrop; the mmu is 1 acres or ¼ for non-desert types. Landuse types had an mmu of 2.5 acres. Wash types were mapped with a 5 acre mmu. The vegetation map adheres to the 2008 National Vegetation Classification Standard (NVCS) and the Manual of California Vegetation (MCV). The project was conducted in 3 phases. Field Recon performed by CDFW, AIS, and CNPS. Accuracy assessments were performed by California Native Plant Society and Ironwood staff during 2025. The overall Fuzzy Accuracy Assessment score for the final vegetation map is 89.4 percent. The vegetation map was produced using 2022 NAIP imagery 60 cm and 2022 Hexagon 15 cm imagery. More information can be found in the project report here: https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=245070. The vegetation map is available for download here: https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/3100_3199/ds3199.zip.加利福尼亚州鱼类与野生动物部（California Department of Fish and Wildlife, CDFW）委托航空信息系统公司（Aerial Information Systems, AIS），为当前尚无精细尺度植被制图覆盖的莫哈韦沙漠与索诺兰沙漠生态区部分区域，制作一幅精细尺度植被地图，制图总面积达4,399,242英亩。该制图区域涵盖因约县、河滨县与圣贝纳迪诺县等多个县份。最小制图单元（minimum mapping unit, MMU）方面，荒漠类植被的最小制图单元为10英亩，非荒漠类植被为1英亩；针对湿地、河岸带与岩石露头等特殊植被群丛，非荒漠类的最小制图单元为1英亩或1/4英亩。土地利用类型的最小制图单元为2.5英亩，干谷（Wash）植被类型则采用5英亩的最小制图单元。本植被地图遵循2008年版《国家植被分类标准》（National Vegetation Classification Standard, NVCS）与《加利福尼亚植被手册》（Manual of California Vegetation, MCV）。本项目分三个阶段实施，由CDFW、AIS与加州本土植物学会（California Native Plant Society, CNPS）共同完成野外踏勘工作。精度评估工作由加州本土植物学会与Ironwood团队于2025年开展，最终植被地图的整体模糊精度评估得分为89.4%。该植被地图基于2022年NAIP 60厘米分辨率影像与2022年Hexagon 15厘米分辨率影像制作完成。更多项目详情可通过以下链接查阅项目报告：https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=245070。该植被地图可通过以下链接下载获取：https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/3100_3199/ds3199.zip。