Search results
Results from the WOW.Com Content Network
The species was imported in 1620 to England by Captain George Weymouth, who planted it for a timber crop, but had little success because of white pine blister rust disease. Old-growth pine in the Americas, of various Pinus species, was a highly desired wood since huge, knot-free boards were the rule rather than the exception. Pine was common ...
Dacrycarpus dacrydioides, commonly known as kahikatea (from Māori) and white pine, is a coniferous tree endemic to New Zealand. A podocarp , it is New Zealand's tallest tree, gaining heights of 60 m over a life span of 600 years.
By contrast, the (roughly) 300-year-old Ice Glen pine in Stockbridge, Massachusetts shows approximately half the annual growth rate of trees in the 90- to 180-year age range, averaging just 5.8 cubic feet (0.16 m 3) per year over a five-year monitoring period. Volume increased as a result of increases in both height and girth.
Picea glauca (Moench) Voss., the white spruce, [4] is a species of spruce native to the northern temperate and boreal forests in Canada and United States, North America.. Picea glauca is native from central Alaska all through the east, across western and southern/central Canada to the Avalon Peninsula in Newfoundland, Quebec, Ontario and south to Montana, North Dakota, Minnesota, Wisconsin ...
The mean annual increment (MAI) or mean annual growth refers to the average growth per year a tree or stand of trees has exhibited/experienced up to a specified age. For example, a 20-year-old tree that has a stem volume of 0.2 m 3 has an MAI of 0.01 m 3 /year.
Millar et al. [21] observed increased growth in whitebark pine and accelerated encroachment into snowfields by whitebark pine and western white pine during the 20th century, particularly since 1980. Bunn et al. [22] showed that recent growth rates of subalpine conifers are greater than rates from any other period during the past 1000 years.
Western white pine is a large tree, regularly growing to 30–50 metres (98–164 ft) tall. It is a member of the white pine group, Pinus subgenus Strobus, and like all members of that group, the leaves ('needles') are in fascicles (bundles) of five, [5] with a deciduous sheath.
Abies concolor subsp. concolor — Colorado white fir or Rocky Mountain white fir A smaller tree to 25–35 m (80–115 ft) tall, rarely 45 m (150 ft). Foliage blue-green, [ 8 ] strongly upcurved to erect on all except weak, shaded shoots in the lower crown; leaves mostly 3.5–6 cm ( 1 + 3 ⁄ 8 – 2 + 3 ⁄ 8 in), and strongly glaucous on ...