Definitions for "Structural diversity"
The diversity in a plant community resulting from the variety of physical forms of the plants within the community (such as the layering or tiering of the canopy of a forest from the groundlevel to the tops of the tallest trees).
The diversity of the composition, abundance, spacing, and other attributes of plants in a community.
A full range of sizes, shapes and characteristics of trees and the understorey in a forest.