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Hura crepitans, the sandbox tree, [2] also known as possumwood, monkey no-climb, assacu (from Tupi asaku) and jabillo, [3] is an evergreen tree in the family Euphorbiaceae, native to tropical regions of North and South America including the Amazon rainforest. It is also present in parts of Tanzania, where it is considered an invasive species. [4]
i-Tree is a collection of urban and rural forestry analysis and benefits assessment tools. It was designed and developed by the United States Forest Service to quantify and value ecosystem services provided by trees including pollution removal, carbon sequestration, avoided carbon emissions, avoided stormwater runoff, and more. i-Tree provides baseline data so that the growth of trees can be ...
A tree that appears borderline using a BAF 10 instrument was measured as 12.4 inches (310 mm) DBH. The horizontal distance from the sampling point to the center of the tree is 34 feet (10 m). DBH x PRF = Limiting Distance 12.4in. x 2.75ft./in. = 34.1ft. 34.1 feet (limiting distance) is greater than 34 feet (measured distance), tree is in.
The same process is used to measure the height or extension of the base of the tree above or below eye level where D1 is the distance to the base of the tree and (b) is the angle to the base of the tree. Therefore, the vertical distance to the base of the tree above or below eye level is [h2 = sin(b) x D2]. Common sense should prevail when ...
The tree was named after the titan Hyperion from Greek mythology. [8] [7] Hyperion is estimated to be between 600 and 800 years old [1] [9] [10] and contain 530 m 3 (18,600 cu ft) of wood. [2] Coast redwoods in Redwood National Park. The exact location of Hyperion is nominally secret but is available via internet search. [11]
Photographs of trees can be used to determine girth or other measurements if there is a something of known size in the photo to provide a scale. The following information must be known to approximate the measurements: 1) distance of the camera from the tree, 2) distance from the camera to the scale, and 3) size of the object to be used as a scale.
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A felled tree allows direct sunlight to reach the forest floor. The creation of a treefall gap causes a break in the canopy to form, allowing light to penetrate through to the understory . This light can now reach shrubs and treelet species, which under normal circumstances never grow tall enough to reach the canopy. [ 7 ]