What is a key characteristic of sapwood?

Sapwood is known for its role in the physiological processes of a tree, particularly in the conduction of water and nutrients. This layer of wood, which is located just beneath the bark, is younger and typically more vibrant than the inner, heartwood section. One of the main functions of sapwood is to transport water and dissolved nutrients from the roots to the leaves through the xylem vessels. This is essential for the tree's growth and overall health.

Other characteristics of sapwood include its lighter color compared to heartwood and its position closer to the outer parts of the tree. The distinction between sapwood and heartwood is crucial because, while sapwood is actively involved in metabolic functions, heartwood, on the other hand, serves mainly as a structural support as it becomes filled with resin and other substances, often leading to a darker color. These features highlight the significant role of sapwood in tree biology and its importance in maintaining the tree’s life processes.