New Mexico Level 4 Ecoregions Map
| er20b - Shale and Sedimentary Basins |
| er20c - Semiarid Benchlands and Canyonlands |
| er20d - Arid Canyonlands |
| er21a - Alpine Zone |
| er21b - Crystalline Subalpine Forests |
| er21c - Crystalline Mid-Elevation Forests and Shrublands |
| er21d - Foothills and Shrublands |
| er21e - Sedimentary Subalpine Forests |
| er21f - Sedimentary Mid-Elevation Forests and Shrublands |
| er21g - Volcanic Subalpine Forests |
| er21h - Volcanic Mid-Elevation Forests and Shrublands |
| er21j - Grassland Parks |
| er22a - Shrublands and Hills |
| er22b - San Luis Alluvial Flats and Wetlands |
| er22f - Taos Plateau |
| er22g - Rio Grande Floodplain |
| er22h - North-Central New Mexico Valleys and Mesas |
| er22i - San Juan/Chaco Tablelands and Mesas |
| er22j - Semiarid Tablelands |
| er22k - Lava Malpais | er22k - Shale Deserts |
| er22m - Albuquerque Basin | er22m - Near-Rockies Valleys and Mesas |
| er23a - Chihuahuan Desert Slopes | er23a - Madrean Lower Montane Woodlands |
| er23c - Montane Conifer Forests | er23c - Arizona/New Mexico Subalpine Forests |
| er23e - Conifer Woodlands and Savannas | er23e - Rocky Mountain Conifer Forests |
| er23g - Rocky Mountain Subalpine Forests | er23g - Northern Woodlands and Sagebrush |
| er23l - Mogollon Transition Conifer Forests | er23l - Chihuahuan Basins and Playas |
| er24b - Chihuahuan Desert Grasslands | er24b - Low Mountains and Bajadas |
| er24d - Chihuahuan Montane Woodlands | er24d - Rio Grande Floodplain |
| er24g - Gypsiferous Dunes | er24g - Lava Malpais |
| er25b - Rolling Sand Plains | er25b - Moderate Relief Plains |
| er25e - Rolling Cropland and Range | er25e - Llano Estacado |
| er25j - Shinnery Sands | er25j - Arid Llano Estacado |
| er26d - Semiarid Canadian Breaks | er26d - Mesa de Maya/Black Mesa |
| er26h - Pinyon-Juniper Woodlands | er26h - Upper Canadian Plateau |
| er26m - Canadian Canyons | er26m - Conchas/Pecos Plains |
| er26o - Central New Mexico Plains | er26o - Pluvial Lake Basins |
| er26q - Southern New Mexico Dissected Plains | er26q - Apachian Valleys and Low Hills |
| er79b - Lower Madrean Woodlands | er79b - Madrean Pine-Oak and Mixed Conifer Forests |
| er79e - Madrean Basin Grasslands |
Based on Ecoregions developed by the EPA this map describe areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources, as well as similarity of climate that can assist New Mexico gardenders.
