| Ecoregion | State | Environmental Conditions | Area (km2 and % of the country’s territory) |
| North American Deserts | Baja California, Baja California del Sur | Arid climate with plains and Sierra mountains, forming Calcisols, Leptosols, Regosols and Arenosols | 145,359 (7.41) |
| Tropical Dry Forests | Sonora, Tamaulipas | Warm and semi-arid climate resulting from Sierra mountains, plains and rolling hills, forming Leptosols, Regosols, Phaeozems and Vertisols | 259,604 (13.24) |
| Tropical Humid Forests | Campeche, Chiapas, Quintana Roo, Tabasco, Veracruz, Yucatán | Warm climate with a relief dominated by plains and rolling hills, forming Leptosols, Luvisols, Vertisols and Phaeozems | 311,604 (15.89) |
| Temperate Sierras | Colima, Chihuahua, Durango, Mexico City, Michoacán, Morelos, Jalisco, Nayarit, Oaxaca, Puebla, Sinaloa, Guerrero, State of Mexico | Semi-warm to semi-arid temperate climate resulting from Sierra mountains and plateaus, forming Leptosols, Luvisols, Regosols and Phaeozems | 820,027 (41.81) |
| Southern Semi-Arid Highlands | Tlaxcala, Hidalgo, San Luis Potosí, Guanajuato, Querétaro, Aguascalientes, Zacatecas, Nuevo León, Coahuila | Mainly semi-arid to arid climate resulting from Sierra mountains, rolling hills and plains, forming Leptosols, Phaeozems and Vertisols | 424,891 (21.66) |