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Crown closure and crown cover are two slightly different measures of the forest canopy and that determine the amount of light able to penetrate to the forest floor. Crown closure, also known as canopy closure, is an integrated measure of the canopy "over a segment of the sky hemisphere above one point on the ground".
Canopies can cover vast distances and appear to be unbroken when observed from an airplane. However, despite overlapping tree branches, rainforest canopy trees rarely touch each other. Rather, they are usually separated by a few feet. [7] Dominant and co-dominant canopy trees form the uneven canopy layer.
A canopy can also be a tent, generally without a floor. The word comes from the ancient Greek κωνώπειον (konópeion, "cover to keep insects off"), from κώνωψ (kónops, "cone-face"), which is a bahuvrihi compound meaning "mosquito".
The bubble canopy of a Lockheed Martin F-22 Raptor Canopy of an F-22 Raptor. An aircraft canopy is the transparent enclosure over the cockpit of some types of aircraft.An aircraft canopy provides a controlled and sometimes pressurized environment for the aircraft's occupants, and allows for a greater field of view over a traditional flight deck.
Canopy (architecture), overhead roof or structure that provides shade or other shelter; Canopy (parachute), cloth and suspension line portion of parachute; Canopy bed, a type of bed; Vehicle canopy, type of overhead door for vehicle; Truck canopy
Canopy of D. aromatica at the Forest Research Institute Malaysia displaying crown shyness Trees at Plaza San Martín (Buenos Aires), Argentina. Crown shyness (also canopy disengagement, [1] canopy shyness, [2] or inter-crown spacing [3]) is a phenomenon observed in some tree species, in which the crowns of fully stocked trees do not touch each other, forming a canopy with channel-like gaps.
Canopy mapping is the process whereby the positions and size of the branches within the canopy are mapped in three-dimensional space. [22] [23] [24] It is a labor-intensive process that usually reserved for only the most significant specimens. This is usually done from a set position or a series of positions within the tree.
Forest cover is the amount of trees that covers a particular area of land. It may be measured as relative (in percent) or absolute (in square kilometres/square miles).Nearly a third of the world's land surface is covered with forest, with closed-canopy forest accounting for 4 - 5 billion hectares of land. [1]