Tree Growth Dendrology - study of trees Dendrochronology - study of tree rings.

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Presentation transcript:

Tree Growth Dendrology - study of trees Dendrochronology - study of tree rings

Tree Cross Section

Outer Bark: Protection, insulation Inner Bark: “phloem”, carries food short lived - becomes bark/cork Cambium Layer : cell division, annual ring added Sapwood: “new wood”, carries water (xylem) Heartwood: strength, support

Spring Cells Summer Cells This tree is 50 years old!

Diameter Tape Measured at DBH - 4.5‘)

Increment Borer Core sample

Twig Diagram primary growth - growth upward secondary growth - outward growth

Terms To Know BarkPrimary GrowthGravitropism Heartwood Secondary GrowthAuxins Sapwood Bundle Scar/Leaf ScarCytokinins Cambium Increment Borer Annual Ring Pith Diameter Tape XylemDBH PhloemDendrology Terminal BudDendrochronology Lateral BudPruning LenticelGrafting Bud Scale ScarPhototropism