What is the practice of removing a ring of phloem tissue around a tree's circumference called?

Girdling is the practice of removing a ring of phloem tissue around the circumference of a tree, which disrupts the tree's ability to transport nutrients and water from the roots to the leaves. The phloem is responsible for carrying the products of photosynthesis down from the leaves to other parts of the tree; when the phloem is damaged or removed, this transport system is interrupted, ultimately affecting the plant’s vitality.

This technique can be used intentionally for various reasons, such as controlling tree growth, managing pest populations, or even as a method for harvesting timber in a regulated manner. Understanding girdling is important in forestry and management practices, as it can have significant ecological impacts on the tree and surrounding environment.