- Bole strength and root/soil strength enable trees to resist breakage
- Strong, tapered stems resist bending and stay straight, which reduces
the turning moment due to crown displacement.
- The resistance of the root/soil system to uprooting and overturning
depends on strong roots, a good rooting arrangement, a large root/soil
mass, and a cohesive bond between roots and soil.
- Bole strength is not usually affected as the tree sways back and forth
during a wind storm. However, the root/soil bond can break down, especially
if the soils are low strength or wet.