This report evaluates the London i-Tree Eco Project- a project dedicated to the millions of trees and shrubs in London’s parks, gardens, woodlands, and open spaces are collectively described as London’s ‘urban forest’. The methodology behind the i-Tree Eco is designed to use standardised field data from randomly located plots across the whole study area. This field data is combined with local hourly pollution and meteorological data to provide a snapshot picture of the ecosystem services provided by trees and shrubs within the study area.

This report provides a quantitative baseline of the air pollution, carbon storage and sequestration benefits of trees as well as the amenity and stormwater benefits they provide. This is supported with detailed information on the structure and composition of London’s urban forest.