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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]
The New York State Department of Environmental Conservation (informally referred to as NYSDEC, DEC, EnCon or NYSENCON) is a department of New York state government. [4] The department guides and regulates the conservation, improvement, and protection of New York's natural resources; manages Forest Preserve lands in the Adirondack and Catskill parks, state forest lands, and wildlife management ...
Permissible activities on New York state forest lands include hunting, trapping, fishing, hiking, snowshoeing, cross-county skiing, horseback riding, snowmobiling, and camping, although some properties prohibit some of these activities. [2] Motorized vehicle use is prohibited except for on specified roads and trails.
The New York City Tree Map is an interactive map by the parks department that catalogues more than 850,000 trees in the city. [19] The NYC Department of Parks observes Earth Day and Arbor Day. [18] Street trees as a metaphor for urban life were popularized in the 1943 novel A Tree Grows in Brooklyn. [20]
Allometry studies the relative size of organs or parts of organisms. Tree allometry narrows the definition to applications involving measurements of the growth or size of trees. Allometric relationships often are used to estimate difficult tree measurements, such as volume, from an easily measured attribute such as diameter at breast height (DBH).
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.
Bounded growth, also called asymptotic growth, [1] occurs when the growth rate of a mathematical function is constantly increasing at a decreasing rate. Asymptotically, bounded growth approaches a fixed value. This contrasts with exponential growth, which is constantly increasing at an accelerating rate, and therefore approaches infinity in the ...
In addition to fragmentation, human use of land adjacent to temperate deciduous forests is associated with pollution that can stunt the growth rate of trees. [6] Invasive species that outcompete native species and alter forest nutrient cycles, such as common buckthorn (Rhamnus cathartica), are also introduced by humans. [21]