변재
‘변재’의 한 예를 그린 그림입니다.
Sapwood in a young black walnut trunk cross-section (Juglans nigra)
모든 언어
베타 버전입니다. 삽화는 AI로 생성되었으며 번역은 검토 중입니다.
참고 자료
- US Forest Products Laboratory Wood Handbook — sapwood is the active water-conducting, lighter-colored wood adjacent to bark
- USDA Forest Service technology-transfer sheet — black walnut sapwood is nearly white and contrasts with chocolate-brown heartwood
- University of Illinois Extension — eastern black walnut commonly has ten to twenty annual growth rings in its sapwood