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Precipitation ranges from 750–1,250 millimetres (30–50 in) per year, which falls mostly as snow during the winter. [2] Temperatures average −11.5 to 1.5 °C (11 to 35 °F) in January and 5.5 to 19.5 °C (42 to 67 °F) in July, with a mean annual temperature around 4 °C (39 °F).
An alpine tree line is the highest elevation that sustains trees; higher up it is too cold, or the snow cover lasts for too much of the year, to sustain trees. [2]: 151 The climate above the tree line of mountains is called an alpine climate, [14]: 21 and the habitat can be described as the alpine zone. [15]
The alpine zone, or alpine fell-field, is above the tree line, generally at 11,000 to 11,500 feet (3,400 to 3,500 m) in the south, [4] [5]: 8 and 9,900 feet (3,000 m) [6]: 17 to 10,500 feet (3,200 m) [4] in the north. The plants are influenced by having to endure long and very cold winters, poor to no soils, constant high winds, intense ...
The lowest-elevation biotic zone in the Sierra Nevada is found along the boundary with the Central Valley. [5] This zone, stretching in elevation from 500 to 3,500 feet (150 to 1,070 m), is the foothill woodland zone, an area that is hot and dry in the summer with very little or no snow in the winter. [5]
In phytogeography, concerned with the geographic distribution of plant species, floristic provinces are used. The Sierra Nevada are primarily within the California Floristic Province, with the Rocky Mountain Floristic Province to the north, the Great Basin Floristic Province to the east, and Sonoran Floristic Province to the south.
Several majestic palm trees that usually flank the Refugio State Beach just north of Santa Barbara have come crashing down in recent days. Images show how the massive, 100-year-old trees were ...
California’s upcoming winter is forecast to be mild and drier than normal, according to experts, as climate patterns steer the state. A reader reached out to The Bee’s service journalism team ...
Krummholz Pinus albicaulis in Wenatchee National Forest Wind-sculpted krummholz trees, Ona Beach, Oregon. Krummholz (German: krumm, "crooked, bent, twisted" and Holz, "wood") — also called knieholz ("knee timber") — is a type of stunted, deformed vegetation encountered in the subarctic and subalpine tree line landscapes, shaped by continual exposure to fierce, freezing winds.