심재
나무줄기의 오래된 안쪽 목재로, 물을 더는 운반하지 않고 주로 줄기를 지탱한다.
Heartwood in a black walnut trunk cross-section (Juglans nigra)
모든 언어
삽화는 AI로 생성되었으며 번역은 검토 중입니다.
참고 자료
- US Forest Products Laboratory Wood Handbook — heartwood is the darker non-conductive interior core surrounded by lighter sapwood
- USDA Forest Service technology-transfer sheet — black walnut sapwood is nearly white while its heartwood ranges to dark chocolate brown
- Penn State Extension — black walnut commonly has a large dark central heartwood zone surrounded by lighter sapwood