- Temperate desert: The canyon's lower elevations are characterized by a hot desert climate, with average summer temperatures exceeding 100°F (38°C). This zone is home to a variety of cacti, yuccas, and other desert plants.
- Pinyon-juniper woodland: At higher elevations, the canyon transitions to a pinyon-juniper woodland, characterized by stands of pinyon pines and junipers. This zone is home to a variety of wildlife, including deer, elk, and bighorn sheep.
- Coniferous forest: The canyon's rim is home to a coniferous forest, characterized by stands of ponderosa pines, Douglas firs, and white firs. This zone is home to a variety of wildlife, including bears, cougars, and marmots.
In addition to these major biomes, the Grand Canyon also contains a number of smaller, localized ecosystems, such as riparian areas, seeps, and springs. These areas provide important habitat for a variety of plants and animals, and they play an important role in the overall ecology of the canyon.