Is Zonation Common In The Desert?

Is Zonation Common In The Desert? Throughout the arid and semiarid regions of the southwestern United States, there is an altitudinal zonation of vegetation with xerophytic desert scrub (commonly sagebrush, evergreen creosote bush, and evergreen blackbrush) at lower elevations, grading into mesophytic woodland (juniper, piñon pine, and live oak) at … What is altitudinal zonation