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The Old Growth Forest Trail to the pine grove is a loop 1 + 1 ⁄ 4 miles (2.0 km) long. The Old Growth Forest is an even-aged stand of pines estimated to be between 350 and 375 years old. The tallest trees are between 150 and 160 feet tall, and have a girth of more than four feet DBH (Diameter at breast height).
Other researchers have developed models of maximum height for Coast Douglas-fir (Pseudotsuga menziesii var. menziesii) trees that yield similar estimates of 109–138 meters (357–452 feet), [46] a range that includes the height of the tallest reliably-measured historical (dead) specimen, a 126-meter tree. [46] [47] [48]
Porcupine Mountains State Park was established in 1945 to protect the area's large stand of old-growth forest, much of it of the "maple-hemlock" type. In 1972, Michigan passed the Wilderness and Natural Areas Act. This act gave the park the new designation of the Porcupine Mountains Wilderness State Park.
Pinus ponderosa, commonly known as the ponderosa pine, [3] bull pine, blackjack pine, [4] western yellow-pine, [5] or filipinus pine, [6] is a very large pine tree species of variable habitat native to mountainous regions of western North America. It is the most widely distributed pine species in North America.
In the United States, the forest cover by state and territory is estimated from tree-attributes using the basic statistics reported by the Forest Inventory and Analysis (FIA) program of the Forest Service. [2] Tree volumes and weights are not directly measured in the field, but computed from other variables that can be measured. [3] [4]
Pinus lambertiana (sugar pine) The largest and tallest pine, and one of the oldest, sometimes living 500 years or more. [84] Mature trees often have long cones weighing down the tips of the upper branches. Uses: timber; pulpwood, veneers [85] [84] —
Pinus contorta, with the common names lodgepole pine and shore pine, and also known as twisted pine, [3] and contorta pine, [3] is a common tree in western North America. It is common near the ocean shore and in dry montane forests to the subalpine , but is rare in lowland rain forests .
Young spring growth ("candles") on a loblolly pine: Monterey pine bark: Monterey pine cone on forest floor: Whitebark pine in the Sierra Nevada: Hartweg's pine forest in Mexico: The bark of a pine in Tecpan, Guatemala: A pine, probably P. pseudostrobus, in Guatemala