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Coombes, A, Martin, J 
ORCID: https://orcid.org/0000-0002-7560-7611 and Slater, D,
2019.
Defining the allometry of stem and crown diameter of urban trees.
Urban Forestry & Urban Greening, 44: 126421.
ISSN 1618-8667
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Abstract
There is a strong allometric relationship between stem diameter at breast height (DBH) and crown diameter in healthy trees in the young to mature stages of their growth. How do geographical position, site conditions and management treatments influence this relationship?
This study included only free-standing urban trees, thus providing data on the growth potential of the species included in the survey in typical urban conditions by linking this with estimated tree age.
Field work involved recording the dimensions and growing conditions of 400 urban trees in two UK cities; Norwich and Peterborough. Species selected for this study were pedunculate oak (Quercus robur L.), sycamore (Acer pseudoplatanus L.), silver birch (Betula pendula Roth.) and Norway maple (Acer platanoides L.).
The mean relationship between DBH and crown diameter exhibited a restricted range (a ratio of 24 to 27) in this large sample. The results indicated that the factor of species did not have a strong impact on the allometric relationship in the case of the four species measured. It is therefore possible to produce good predictions of crown size by combining data from all the species used in this survey.
A key finding of this study is that previous tree pruning and external site factors, such as hard surfacing over the rooting area and soil type, had no significant influence on the relationship between DBH and crown diameter.
| Item Type: | Journal article |
|---|---|
| Publication Title: | Urban Forestry & Urban Greening |
| Creators: | Coombes, A., Martin, J. and Slater, D. |
| Publisher: | Elsevier |
| Date: | August 2019 |
| Volume: | 44 |
| ISSN: | 1618-8667 |
| Identifiers: | Number Type 10.1016/j.ufug.2019.126421 DOI S1618866718305144 Publisher Item Identifier |
| Divisions: | Schools > School of Animal, Rural and Environmental Sciences |
| Record created by: | Linda Sullivan |
| Date Added: | 30 Aug 2019 13:44 |
| Last Modified: | 31 May 2021 15:18 |
| URI: | https://irep.ntu.ac.uk/id/eprint/37525 |
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