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Wind River Canopy Crane. The Wind River Experimental Forest is an ecological and silvicultural research in Stabler, Washington, in the United States.Used as a research site by the U.S. Forest Service beginning in 1908, [1] and functioning as an experimental forest since 1932, it is "known as the cradle of forest research in the Pacific Northwest". [2]
The ecologist who developed this definition used two meters because he believed that "a regrowth height of 2 m was sufficient" for a gap to be considered closed, but not all scientists agree. [2] For example, Runkle believed that regrowth should be 10–20 m (33–66 ft) above the ground. [2]
Canopy structure is the organization or spatial arrangement (three-dimensional geometry) of a plant canopy. Leaf area index, leaf area per unit ground area, is a key measure used to understand and compare plant canopies. The canopy is taller than the understory layer. The canopy holds 90% of the animals in the rainforest.
Canopy mapping surveys the position and size of all of the limbs down to a certain size in the crown of the tree and is commonly used when measuring the overall wood volume of a tree. Average crown spread is one of the parameters commonly measured as part of various champion tree programs and documentation efforts.
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Measurements made above and below the canopy are used to determine canopy light interception at five angles, from which LAI is computed using a model of radiative transfer in vegetative canopies based on Beer's law. The LP-80 calculates LAI by means of measuring the difference between light levels above the canopy and at ground level, and ...
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