FORESTRY
FOREST MANAGEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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inactive core of a tree trunk or limb
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Wood’s resistance to compression
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Changes in dimensions of wood as it reacts to changes in humidity and temperature
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Refers to the difficulty in cutting, shaping, nailing, and finishing wood
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Detailed explanation-1: -Also called Alburnum. The older, harder, inactive core of a tree, usually dark, denser, and more durable than the surrounding sapwood. Also called Duramen.
Detailed explanation-2: -heartwood, also called duramen, dead, central wood of trees. Its cells usually contain tannins or other substances that make it dark in colour and sometimes aromatic. Heartwood is mechanically strong, resistant to decay, and less easily penetrated by wood-preservative chemicals than other types of wood.
Detailed explanation-3: -Heartwood, the inner wood zone, is physiologically inactive and does not participate in the conduction of water. With the age of the tree, parenchymal cells die losing their reserve substances, and the wood remains protected by a multicomponent organic complex (heartwood substances).