Canopy closuren. The proportion of the sky hemisphere obscured by vegetation when viewed from a single point (Jennings and others 1999).
Canopy closure is a point estimate of the coverage of a forest canopy, and is measured in the field with a spherical densiometer (also called a mirror optometer) or by analyzing upward-looking hemispherical photographs. Canopy closure is almost always greater than canopy cover measured at the same point.
Canopy closure is not synonymous with the silvicultural term crown closure.
|