We use some essential cookies to make this website work.
We’d like to set additional cookies to understand how you use forestresearch.gov.uk, remember your settings and improve our services.
Preparing to search
Tree allometry describes the relationships between tree biometric variables, such as tree diameter, height and crown width. Understanding of these relationships helps urban foresters to assess many of the economic and ecological benefits (e.g. carbon storage, rainwater interception and regulation of temperatures) provided by trees, such as through the use of the urban forest management tools i-Tree Eco and Treezilla
There is however little knowledge, particularly in Great Britain, about how the relationships between these biometric variables changes between trees from different urban areas or according to tree species. This study aimed to fill some of this gap by evaluating the variation in these relationships in more than 2,000 trees from seven tree species growing in eight urban areas across Great Britain. It focused on establishing relationships between: tree height vs Diameter at Breast Height (DBH), crown width vs DBH and crown width vs tree height.
The study found that mean allometric relationships between the DBH, heights and crown widths of urban trees significantly differs from one urban area to another, even when the areas are closely situated. The relationships between these biometrics in urban trees are therefore influenced at least as much by the complex effect of environmental and management factors specific to particular urban areas, as they are by the regional climate. Common patterns of variation were only identifiable for some of the species suggesting that external factors impact on the growth of different species in different ways. The variations in mean allometric relationships were found to be greater in mature trees than in younger trees.
The findings also suggest that crown width can be correctly predicted from DBH measurements. This knowledge will be useful to those conducting citizen science surveys, where the measurement of crown width is required but is challenging.
The paper can be accessed here.
Cookies are files saved on your phone, tablet or computer when you visit a website.
We use 3 types of cookie. You can choose which cookies you're happy for us to use.
These essential cookies do things like remember your progress through a form. They always need to be on.
We use Google Analytics to measure how you use the website so we can improve it based on user needs. Google Analytics sets cookies that store anonymised information about: how you got to the site the pages you visit on forestresearch.gov.uk and how long you spend on each page what you click on while you're visiting the site
Some forestresearch.gov.uk pages may contain content from other sites, like YouTube or Flickr, which may set their own cookies. These sites are sometimes called ‘third party’ services. This tells us how many people are seeing the content and whether it’s useful.