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- Diameter_at_breast_height abstract "Diameter at breast height, or DBH, is a standard method of expressing the diameter of the trunk or bole of a standing tree. DBH is one of the most common dendrometric measurements.Tree trunks are measured at the height of an adult's breast, which is defined differently in different countries and situations. In continental Europe, Australia, the UK, and Canada the diameter is measured at 1.3 metres above ground. In The US, New Zealand, Burma, India, Malaysia, and South Africa, breast height diameter is measured at a height of 1.4 metres. Previously 4.5 ft (1.37 m) was used. In many cases the height makes little difference to the measured diameter. Ornamental trees are usually measured at 1.5 metres above ground.However, some authors maintain that the term DBH should be abolished precisely because the heights at which the diameter is measured are so variable and because it may strongly influence forestry calculations such as biomass. Instead Dx was proposed whereby the x denotes the exact height above the floor (and along the stem) at which the diameter is measured. For instance D130 denotes a diameter measured at 130 cm above the floor and along the stem.On sloping ground, the "above ground" reference point is usually taken as the highest point on the ground touching the trunk, but some use the average between the highest and lowest points of ground. If the DBH point falls on a swelling in the trunk it is customary to measure the girth below the swelling at the point where the diameter is smallest. Other ambiguous settings for determining the exact place where to measure the diameter is given in Dahdouh-Guebas & Koedam (2006).Treetec [1], a Melbourne-based company in Australia has created a free online calculator to determine the DBH for multi-stemmed trees as per AS 4970-2009 Protection of Trees on Development Sites..The two most common instruments used to measure DBH are a girthing (or diameter) tape and calipers.A girthing tape actually measures the girth (circumference) of the tree; the girthing tape is calibrated in divisions of π centimetres (3.14159 cm), thus giving a directly converted reading of the diameter. This assumes the trunk has a circular cross-section, which is typically accurate for most plantation trees.Calipers consist of two parallel arms one of which is fixed and the other able to slide along a scale. Calipers are held at right-angles to the trunk with the arms on either side of the trunk. Precision can be improved on non-circular stems by averaging two caliper measurements taken at right-angles. Electronic calipers are also available enabling highly accurate measurements to be taken and stored for further analysis.DBH is used in estimating the amount of timber volume in a single tree or stand of trees utilising the allometric correlation between stem diameter, tree height and timber volume, (Mackie, 2006). It can also be used in the estimation of the age of veteran trees, given that diameter increment is the only, "constant non-reversible feature of tree growth", (White, 1998).".
- Diameter_at_breast_height thumbnail Electronic_caliper.jpg?width=300.
- Diameter_at_breast_height wikiPageExternalLink j.foreco.2005.10.076.
- Diameter_at_breast_height wikiPageExternalLink TPZ_SRZ_DBH_calculator.php.
- Diameter_at_breast_height wikiPageID "6738934".
- Diameter_at_breast_height wikiPageLength "4728".
- Diameter_at_breast_height wikiPageOutDegree "19".
- Diameter_at_breast_height wikiPageRevisionID "658784634".
- Diameter_at_breast_height wikiPageWikiLink Bole_(botany).
- Diameter_at_breast_height wikiPageWikiLink Caliper.
- Diameter_at_breast_height wikiPageWikiLink Calipers.
- Diameter_at_breast_height wikiPageWikiLink Category:Forest_modelling.
- Diameter_at_breast_height wikiPageWikiLink Category:Volume.
- Diameter_at_breast_height wikiPageWikiLink Circumference.
- Diameter_at_breast_height wikiPageWikiLink Crown_(botany).
- Diameter_at_breast_height wikiPageWikiLink Dendrometry.
- Diameter_at_breast_height wikiPageWikiLink Diameter.
- Diameter_at_breast_height wikiPageWikiLink Lumber.
- Diameter_at_breast_height wikiPageWikiLink Ornamental_plant.
- Diameter_at_breast_height wikiPageWikiLink Pi.
- Diameter_at_breast_height wikiPageWikiLink Plantation.
- Diameter_at_breast_height wikiPageWikiLink Site_index.
- Diameter_at_breast_height wikiPageWikiLink Site_tree_(forestry).
- Diameter_at_breast_height wikiPageWikiLink Tree.
- Diameter_at_breast_height wikiPageWikiLink Tree_allometry.
- Diameter_at_breast_height wikiPageWikiLink Trunk_(botany).
- Diameter_at_breast_height wikiPageWikiLink File:Electronic_caliper.jpg.
- Diameter_at_breast_height wikiPageWikiLink File:Kluppeneinsatz.jpg.
- Diameter_at_breast_height wikiPageWikiLinkText "DBH".
- Diameter_at_breast_height wikiPageWikiLinkText "Diameter at breast height".
- Diameter_at_breast_height wikiPageWikiLinkText "at breast height".
- Diameter_at_breast_height wikiPageWikiLinkText "breast height (d.b.h.)".
- Diameter_at_breast_height wikiPageWikiLinkText "breast height".
- Diameter_at_breast_height wikiPageWikiLinkText "chest height".
- Diameter_at_breast_height wikiPageWikiLinkText "d.b.h".
- Diameter_at_breast_height wikiPageWikiLinkText "d.b.h.".
- Diameter_at_breast_height wikiPageWikiLinkText "dbh".
- Diameter_at_breast_height wikiPageWikiLinkText "diameter at breast height (dbh)".
- Diameter_at_breast_height wikiPageWikiLinkText "diameter at breast height".
- Diameter_at_breast_height wikiPageWikiLinkText "diameter at breast".
- Diameter_at_breast_height wikiPageWikiLinkText "diameter".
- Diameter_at_breast_height wikiPageWikiLinkText "diameters".
- Diameter_at_breast_height wikiPageWikiLinkText "girth".
- Diameter_at_breast_height wikiPageWikiLinkText "stem diameter".
- Diameter_at_breast_height wikiPageWikiLinkText "trunk diameter".
- Diameter_at_breast_height hasPhotoCollection Diameter_at_breast_height.
- Diameter_at_breast_height subject Category:Forest_modelling.
- Diameter_at_breast_height subject Category:Volume.
- Diameter_at_breast_height hypernym Method.
- Diameter_at_breast_height type Software.
- Diameter_at_breast_height type Quantity.
- Diameter_at_breast_height comment "Diameter at breast height, or DBH, is a standard method of expressing the diameter of the trunk or bole of a standing tree. DBH is one of the most common dendrometric measurements.Tree trunks are measured at the height of an adult's breast, which is defined differently in different countries and situations. In continental Europe, Australia, the UK, and Canada the diameter is measured at 1.3 metres above ground.".
- Diameter_at_breast_height label "Diameter at breast height".
- Diameter_at_breast_height sameAs Dixc3xa0metre_a_lalxc3xa7ada_de_lhome.
- Diameter_at_breast_height sameAs Výčetní_tloušťka_a_výška.
- Diameter_at_breast_height sameAs Stammdurchmesser.
- Diameter_at_breast_height sameAs Rinnasdiameeter.
- Diameter_at_breast_height sameAs Rinnankorkeusläpimitta.
- Diameter_at_breast_height sameAs Diamètre_à_hauteur_de_poitrine.
- Diameter_at_breast_height sameAs Diameter_op_borsthoogte.
- Diameter_at_breast_height sameAs Pierśnica.
- Diameter_at_breast_height sameAs m.0glkqx.
- Diameter_at_breast_height sameAs ఛాతి_ఎత్తు_వద్ద_వ్యాసం.
- Diameter_at_breast_height sameAs Q973582.
- Diameter_at_breast_height sameAs Q973582.
- Diameter_at_breast_height wasDerivedFrom Diameter_at_breast_height?oldid=658784634.
- Diameter_at_breast_height depiction Electronic_caliper.jpg.
- Diameter_at_breast_height isPrimaryTopicOf Diameter_at_breast_height.