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Its leaves are needle-like, in bundles of five (or sometimes four, in the southern Sierra) with a semi-persistent basal sheath, and 2–4 cm (1– 1 + 1 ⁄ 2 in) long, deep glossy green on the outer face, and white on the inner faces; they persist for 10–15 years.
Basal area is the cross-sectional area of trees at breast height (1.3m or 4.5 ft above ground). It is a common way to describe stand density. In forest management, basal area usually refers to merchantable timber and is given on a per hectare or per acre basis. If one cut down all the merchantable trees on an acre at 4.5 feet (1.4 m) off the ...
The basal area is a cross-sectional area of the stump taken about 4.5 feet (1.4 m) above the ground. [7] The equation for calculating the basal area of trees in a stand is Basal Area = 0.005454 DBH 2, where DBH is the diameter of the tree at the aforementioned measuring height. [7] Not every stand is uniform, so multiple trees should be ...
Plantations of California black oak have been successfully established in clearcuts from acorn plantings. Thinning such stands promotes stand productivity and wood quality, and is recommended when trees are from 9–15 m (30–49 ft) tall or when stand density (basal area) exceeds 29 m 2 /ha (125 ft 2 /acre). This tree has also been managed for ...
Peterson et al. [20] concluded that basal area increment (i.e. growth) increased for all age classes of whitebark pine and lodgepole pine over a 30-year period beginning around 1960. Millar et al. [ 21 ] observed increased growth in whitebark pine and accelerated encroachment into snowfields by whitebark pine and western white pine during the ...
The altitudinal range of T. californica is from near sea level (but usually above 200 m) in the Coast Ranges to 2,500 m (8,200 ft) in the Sierra Nevada. [1] This shade-adapted, subcanopy tree is native to mountainous habitats in either the California Coast Ranges or the west slopes of the Cascade and Sierra Nevada mountain ranges in California, which are distant from the coast.
The oak has roughly 70 clusters of stems in a thicket which measures 25x8 metres in area and one metre in height. [ 5 ] The colony is located within a mile of 34°01′59″N 117°23′28″W / 34.033°N 117.391°W / 34.033; -117.391 at an elevation of approximately 1,312 ft (400 m) on a relatively steep north-facing
Land area County City Established Ref; Boggs Mountain Demonstration State Forest: 3,493 acres (14.14 km 2) Lake: Cobb: 1949 [1] Ellen Pickett State Forest: 160 acres (0.65 km 2) Trinity - [2] Jackson Demonstration State Forest: 48,652 acres (196.89 km 2) Mendocino: Fort Bragg: 1949 [3] Las Posadas State Forest: 796 acres (3.22 km 2) Napa ...