Crown closure Crown closure Forest Measurement and Modelling. Tree crown Tools.htm Crown closure, also known as crown cover, is the percentage of ground covered by a vertical projection of the outermost perimeter of the crowns in a stand.
Crown closure is used as a measure of stand density and competition.
It may also be used in equations that predict stand volume. Crown closure may be measured on aerial photographs or other remotely sensed images. Often, stands are grouped into classes after the photograph is compared with standard percentage cover images. This estimate will be greater than estimates based on aerial photography when tree crown overlap.