sapwood

Thân thiện

A cross-section of a tree trunk shows the pale sapwood surrounding the darker heartwood.

Definition

Noun: * The younger, living, outermost wood of a tree trunk or branch, located between the inner bark (cambium) and the darker, central heartwood. It is typically lighter in color and is physiologically active in conducting water and nutrients from the roots to the leaves.

Usage

Sapwood is a technical term used primarily in botany, forestry, woodworking, and related fields to describe a specific part of a tree's anatomy. * It is used as a countable noun (e.g., the sapwood, a layer of sapwood) and as an uncountable noun (e.g., The log contains mostly sapwood).

Examples

• The sapwood of the pine tree was a pale yellow, contrasting sharply with the rich brown heartwood.
• In many tree species, the sapwood is more susceptible to decay and insect attack than the heartwood.
• The arborist explained that the tree's sapwood was responsible for transporting water to its canopy.
• When milling lumber, the amount of sapwood present can affect the wood's durability and value.

Advanced Usage

• Sapwood vs. Heartwood: This is the most common comparative usage, highlighting the functional and structural differences between the tree's active outer wood and its inactive, often more durable, core.
  • The furniture maker preferred heartwood for its stability and color, often removing the softer sapwood.
• Sapwood function: Describing the primary physiological role of sapwood.
  • The blockage of the sapwood by disease can lead to the wilting and death of the tree.

Variants and Related Words

• Alburnum (n): A less common, technical synonym for sapwood.
• Heartwood (n): The older, non-living central wood of a tree, which provides structural support.
• Cambium (n): The thin layer of cells between the sapwood and inner bark, responsible for producing new wood and bark.
• Xylem (n): The vascular tissue in plants that conducts water and dissolved nutrients; sapwood is a part of the xylem.

Synonyms

• Alburnum (technical)
• Outer wood

Antonyms

• Heartwood
• Duramen (technical term for heartwood)

Học thuật

Noun

1. newly formed outer wood lying between the cambium and the heartwood of a tree or woody plant; usually light colored; active in water conduction