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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. - PowerPoint PPT Presentation
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Tree GrowthDendrology - study of treesDendrochronology - study of tree rings
Tree Cross Section
Outer Bark: Protection, insulation
Inner Bark: phloem, carries food short lived - becomes bark/corkCambium Layer : cell division, annual ring addedSapwood: new wood, carries water (xylem)
Heartwood: strength, support
Spring CellsSummer CellsThis tree is 50 years old!
Diameter TapeMeasured at DBH - 4.5)
Increment BorerCore sample
Twig Diagramprimary growth - growth upwardsecondary growth - outward growth
Terms To KnowBarkPrimary GrowthGravitropismHeartwood Secondary GrowthAuxinsSapwood Bundle Scar/Leaf ScarCytokininsCambium Increment Borer Annual RingPith Diameter TapeXylemDBHPhloemDendrologyTerminal BudDendrochronologyLateral BudPruningLenticelGraftingBud Scale ScarPhototropism