A principal aim of the National Tree Safety Group (NTSG) was to develop a nationally recognised approach to tree safety management at least partly in response to a perception that some valuable trees are being lost because of an increase in defensive arboriculture.
The NTSG recognised the lack of a scientific evidence base for tree risk management. To help fill this gap the NTSG commissioned research to be undertaken by the Centre for Decision Analysis and Risk Management.
The research was initially broken down in to two parts. The first determined the risk posed by trees, using existing data sources and collating information to one authoritative reference. The second part focused on the public perception of the risks posed by trees and tree failure.
This final stage of the DARM research was to:
A recent paper evaluates the risk:
Ball, D.J. and Watt, J. (2013) The Risk to the Public of Tree Fall. Journal of Risk Research 16, Issue: 2, 261-269
The guidance produced by the NTSG is now a national guidance document produced by an authoritative and representative group. Its content and recommendations, if followed, should assist trees owners involved in personal injury or compensation claims when presented to the court as supporting documentation. This is available on the Forestry Commission website.