Topics

#ARBatwork #ArbMatters #PledgeLessPlastic & 1987 storm 2018 3ATC 50th annual AA AA Awards accreditation advice AFL aftercare AGM Agrilus Biguttatus aid air quality Alert Alex Kirkley amenity Amenity Conference Ancient Tree Forum Annual Awards APPGHG apprentice apprenticeship Apprenticeships Approved Approved Contractors ARB ARB Approved Contractor ARB Approved Contractors ARB at work ARB Magazine ARB Show arb training ArbAC Arboricultural Association Arboriculture arborists Arbsafe ash dieback Assessments atf Australia Autumn Review award Awards Barcham Trees Bark Beetle Bartlett Bartlett Tree Experts bats beetle beyond ism Bill Matthews biochar biodiversity biosecurity branch Branches Brexit bs5837 bursary business Call for papers Campout Canker stain of plane carbon CCS Cellular Confinement Systems CEnv Ceratocystis Ceratocystis platani chainsaw chalara Charles charter Charter for Trees chelsea Chelsea Flower Show Claus Mattheck climate climber climbing Colleges committees competiton conference Confor conifers conservation Consultant consultation Contractor Coroner Council Countryside Stewardship cross industry news Cryphonectria parasitica Cumbria DART Date for your diary deadwood death defra Design Devon disease document dothistroma EAC East Anglia ecology Economic Report economy Ecotricity education Electricity England EPF equipment Europe European Arboricultural Council European Wood Pastures exeter Exhibitors Fatality Fera Fine flood flooding Forest Research forestry Forestry Commission forests FSC Fund4Trees funding fundraiser gardening GDPR Geocells Gov.uk government grants Green Brexit Green Infrastructure Green Infratructure guidance Guidance Note 2 guides Hazard Tree Health Helliwell Help Henry Kuppen Horse Chestnut horticulture HRH HRH Prince Charles HS2 HSE ICF Infographic InfraGreen International Urban Forestry Congress Investigating Tree Archaeology Conference Ips typographus Irma irrigation ISA iso i-Tree IUFC Job Karabiner Kew land-based Landscape Institute Landscape Show landscaping Lantra law Leaf Minor Lectures legislation London longevity LTOA Mayor of London Melbourne Member Benefit mentor Midlands moth' NASA National Geographic National Tree Week NATO News nominations Northern Northumberland notification NTIS NTOA NTOC oak 'oak Oak Processionary Moth Oak-boring Beetle obituary Observatree opm Padua parks parliament Perennial Pests and Diseases petition Phytophthora planning Planning Law planting Plumpton College policy poll Power Prince Charles Prince of Wales processionary Protect and Survive protected tree protection Quotatis ramorum Registered Registered Consultant Registered Consultants Rememberance Day Report Rescue research Resilience response retrenchment review RFS rhs Ride4Research rigging Rodney Helliwell rogue tree surgeons RSFS Safety Safety Bulletin Saftey Scotland Scottish Branch SDG Accord security seminars Share Sheffield Show Site Guidance skills SocEnv soil soils South East SRWP staff statement Stationary Rope statutory STIHL strategy student Student Conference survey Sustainable Soils Alliance Sweet Chestnut sweet chestnut blight TDAG Technical Officers tender Thames & Chiltern The Arboricultural Association The Woodland Trust Thinking Arbs Day Timbersports Tools TPO Trading Standards trailblazer training transport Tree Tree Champion Tree Council Tree Health Tree Inspection tree loss tree management Tree of the year Tree Officer Tree officers tree register tree species Tree Surgeons Tree Week tree-felling TreeRadar trees Trees, People and the Built Environment trust' trustee Trustees TrustMark UAG Uitlity UK favourite ukas UKWAS urban forest Urban Forestry Urban Tree Cover urban trees VETcert veteran trees video Videos volunteer VTA Wales watering solutions webinars website Western Westonbirt Wharton women in arboriculture woodland woodland trust woods World Environment Day Xylella young arborists

Disclaimer: The views and opinions expressed in this article are those of the author and do not necessarily reflect the views of the Arboricultural Association.

Share this story

London i-Tree Results Value the Cities Urban trees at £6bn

  06/01/2016
Last Updated:  07/01/2016

Former AA President Lord Framlingham hosted the launch of the long awaited and much valued London i-Tree Eco urban forest survey attended by key figures including representatives from the AA at a Westminster reception on the 2nd December 2015. Using 300 volunteers the survey is the largest citizen science project of its kind and its results a testament to the quantifiable benefits of trees. With 8 million trees worth £6.1 billion to the capital the wider benefits (eco system services) in respect of storm water alleviation, carbon storage and pollution removal can now be broken down and quantified. The figures per annum are in the millions.

Flood and air pollution reduction were some of the key benefits revealed in the survey results. The removal of 2,241 tonnes of pollution, at a value of £126m per annum can be further broken down using i-Tree into each pollutant and by Inner, Outer and Greater London with removal the greatest for ozone.

With the current floods and heavy rains it is accepted that storm water run-off as well as river breaches played a key role in the severe flooding experienced in parts of the country. Climate change predictions suggest further extreme rainfall events and with an increase in building and impermeable services the risk of floods can only increase. The quantifiable benefit of trees to mitigate this will be of significant value in supporting the case for planting, maintenance and appropriate species choice. The report showed that in London storm water alleviation was 3,414,000m3 per annum, worth £2.8 million.

Summing up the importance of the report and its wider use in the UK Rory Stewart the Environment Minister invited Lord Framlingham to form a small team of experts to meet with him to discuss the issue of no one identified government minster with responsibility for trees. Our Vice Chair Keith Sacre will form part of this small informal group.

For a copy of the Report visit Valuing London's Urban Forest: Results of the London iTree ECO Project (PDF) >>

Looking to the future the AA is meeting with Forest Research and Treeconomics to plan the launch of i-Tree Eco Version 6 for the UK and the associated support, promotion and training with the support of the Forestry Commission. The development of a UK version has taken several years and we are delighted to be able to share with you that it will be available imminently enabling data collected in the UK to be translated into UK financials without recourse, and the inevitable delay, to the US.