Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Tree_forks> ?p ?o. }
Showing items 1 to 16 of
16
with 100 items per page.
- Tree_forks abstract "In arboriculture, junctions in the crown structure of trees are frequently categorised as either branch-to-stem attachments or co-dominant stems. Co-dominant stems are where the two or more arising branches emerging from the junction are of near equal diameter and this type of junction in a tree is often referred to in layman's terms as 'a tree fork'.There is actually no hard botanical division between these two forms of tree junction: they are teleologically equivalent, and from their external appearance it is only a matter of the diameter ratio between the branches that are conjoined that separates a tree fork from being a branch-to-stem junction.However, when a small branch joins to a tree trunk there is a knot that can be found to be embedded into the trunk of the tree, which was the initial base of the smaller branch. This is not the case in tree forks, as each branch is roughly equal in size and no substantial tissues from either branch is embedded into the other, so there is no reinforcing knot to supply the mechanical strength to the junction that will be needed to hold the branches aloft.Research has shown that a unique wood grain pattern at the apex of forks in hazel trees (Corylus avellana L.) acts to hold together the branches. This is an example of 'trade-off' in xylem, where mechanical strength to the tree's junction is gained at the expense of efficiency in tree sap conductance The complex interlocking wood grain patterns developed within tree forks present a great opportunity for biomimicry (the mimicking of natural biological structures in man-made materials) in fibrous materials, where the production of a Y-shaped or T-shaped component is needed: particularly in such components that may need to act as a conduit for liquids as well as being mechanically strong.Where a junction forms in a tree and bark is incorporated into the join, this is referred to as an 'included bark junction' or 'bark inclusion'. These can be substantially weaker in strength than normal tree forks, and can become a significant hazard in a tree. Common tree care practices are to prune out such bark-included forks at an early stage of the tree's development, to brace the two arising branches above such a junction so that they can not split apart, or to reduce the length of the smaller arising branch, so that it is subordinated to the larger branch.The strength of a normally-formed tree fork can be assessed by its shape: those that are more U-shaped are typically considerably stronger than those that are V-shaped at their apex. This characteristic, and the presence of bark included in a tree fork, are important attributes for tree surveyors and tree contractors to note in order to assess whether the tree fork is a defect in the structure of a tree.".
- Tree_forks thumbnail Tree_fork.JPG?width=300.
- Tree_forks wikiPageExternalLink pruning.shtml.
- Tree_forks wikiPageExternalLink fcpg13.pdf.
- Tree_forks wikiPageExternalLink www.isa-arbor.com.
- Tree_forks wikiPageID "41838275".
- Tree_forks wikiPageRevisionID "601052358".
- Tree_forks subject Category:Trees.
- Tree_forks comment "In arboriculture, junctions in the crown structure of trees are frequently categorised as either branch-to-stem attachments or co-dominant stems.".
- Tree_forks label "Tree forks".
- Tree_forks sameAs m.0_qj6q7.
- Tree_forks sameAs Q17146557.
- Tree_forks sameAs Q17146557.
- Tree_forks wasDerivedFrom Tree_forks?oldid=601052358.
- Tree_forks depiction Tree_fork.JPG.
- Tree_forks isPrimaryTopicOf Tree_forks.
