highdesert

Highdesert is a term used to describe arid or semi-arid regions characterized by high elevation, typically in the range of 3,000 to 7,000 feet (900–2,100 m) above sea level. The designation is most commonly applied in the western United States, where plateaus and basins within the Great Basin and the eastern Mojave and parts of the Columbia and Intermountain West rise well above low desert basins. While not a formal climate category, highdesert describes landscapes that combine dryness with cooler temperatures caused by altitude, producing substantial diurnal temperature variation.

Climate and soils: Precipitation is generally low, often less than 10–15 inches (250–380 mm) annually, with snow in winter and dry summers. Soils can be sandy or rocky and are prone to wind erosion. The elevation moderates daytime heat but does not eliminate aridity, and frost can be common in winter.

Ecology: Plant communities include sagebrush steppe, pinyon-juniper woodlands, and, at suitable latitudes and elevations, stands of ponderosa pine. In some areas the Joshua tree and other Mojave flora occur. Fauna includes pronghorn, jackrabbits, coyotes, and raptors; many areas host adapted reptiles and small mammals.

Human use: Indigenous peoples have inhabited highdesert areas for centuries. Modern use includes ranching, mining, recreation, and tourism, with towns that emphasize outdoor activities such as hiking, climbing, and skiing near higher peaks.

Environmental issues: The highdesert is particularly vulnerable to drought, wildfires, and groundwater stress. Conservation and land-management efforts focus on habitat protection, water conservation, and fire resilience.