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Enmore Park Plan of Management - Land

Enmore Park Plan of Management - Land

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URBAN FORESTRY AUSTRALIA - TREE MANAGEMENT & CONSULTING ARBORICULTURISTSTERMS AND DEFINITIONSThe following relates to terms or abbreviations that have been used in this report and providesthe reader with a detailed explanation <strong>of</strong> those terms.Aerial inspection Where the subject tree is climbed by a pr<strong>of</strong>essional tree worker or arboristspecifically to inspect and assess the upper stem and crown <strong>of</strong> the tree for signs or symptoms <strong>of</strong>defects, disease, etc.Age classesYSMMLMOMYoung refers to a well-established but juvenile treeSemi-mature refers to a tree at growth stages between immaturity and full sizeMature refers to a full sized tree with some capacity for further growthLate Mature refers to a full sized tree with little capacity for growth that is not yetabout to enter declineOver-mature refers to a tree about to enter decline or already decliningBasal flare The rapid increase in diameter that occurs at the confluence <strong>of</strong> trunk and root crown,associated with both trunk (stem) and root tissue.Buttress root A large woody root located at the base <strong>of</strong> the trunk (the root crown) which isimportant to the overall stability <strong>of</strong> the tree due to its contributions to basal flare.Cambium refers to the layer <strong>of</strong> cells between the exterior bark and the inner wood whichprimarily controls cell division, and hence radial expansion <strong>of</strong> the stem, branches and shoots.Co-dominant refers to stems or branches equal in size and relative importance.Compartmentalisation A dynamic defense and protection process in trees to resist the spread <strong>of</strong>pathogens and decay organisms using existing and new cells as physical and chemicallyenhanced barriers as a system <strong>of</strong> four walls.Condition refers to the tree’s form and growth habit, as modified by its environment(aspect, suppression by other trees, soils) and the state <strong>of</strong> the scaffold (i.e. trunk and majorbranches), including structural defects such as cavities, crooked trunks or weak trunk/branchjunctions. These are not directly connected with health and it is possible for a tree to be healthybut in poor condition.Crown raise pruning Pruning technique where lower limbs are removed, thereby lifting theoverall crown above the ground.Dead wood refers to any whole limb that no longer contains living tissues (e.g. live leaves and/orbark). Some dead wood is common in a number <strong>of</strong> tree species.Decay Process <strong>of</strong> degradation <strong>of</strong> woody tissues by fungi or bacteria through decomposition <strong>of</strong>cellulose and lignin. There are numerous types <strong>of</strong> decay that affect different types <strong>of</strong> tissues,spread at different rates and have different affect on both the tree’s health and structural integrity.Defect Any structural weakness or deformity.Diameter at Breast Height (DBH) refers to the tree trunk diameter at breast height(1.4 metres above ground level)Arboricultural Audit and Assessment– <strong>Enmore</strong> <strong>Park</strong>, Marrickville. January, 2008 8 <strong>of</strong> 42

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