Data was collected from 6,000+ trees all across the area of Greater Manchester utilising tools such as a bs5837 tree survey. The ones gathering this data were a group of 57 surveyors who had visited approximately 2,000 plots of land. This action was taken to help compute the economic as well as environmental benefits which trees provide. Along with the benefits, the team of 57 were also looking for any signs of risks to the tree health.
The results of this data gathering showed that there are roughly 11,321,386 trees with 15.7% of them being beneath Great Manchester’s tree canopy.
This data also displays that approximately one million trees are in danger of being lost to diseases and pests such as the Horse Chestnut Bleeding Canker and Ash Die back.
Furthermore, Greater Manchester’s trees act as a sort of filtration system, removing about 847 tonnes of tonnes of pollutants per annum. These trees also help absorb excessive storm water so far, intercepting about 1,644,415 cubic meters of the same, each year.
Along with this, they also confiscate about 56,530 tonnes of carbon every year. The current carbon for all the trees in this region equals 1,573,015 tonnes.
The entire economic value of storm water retention, air pollution filtration and carbon sequestration within Greater Manchester’s trees amounts to £33,298,891 per year.
This survey had been carried out all over Greater Manchester this autumn and summer collecting data such as width, diameter, tree species and height.
The most commonly occurring species of trees in the Greater Manchester region are Sycamore, Hawthorn and the English Oak.
This data, once collected is entered into the i-tree software algorithms, from where the information is processed, and it displays vital results such as the economic value of the trees, threats which may affect the trees and where there is potential for the land to nurture more trees.
These same results will also be informed to the Greater Manchester and Woodland Strategy, which will then be published in the Spring of next year. Additionally, another report will also create recommendations for maintaining woodlands to further improve the biodiversity and create homes for the wildlife, especially for the endangered ones.
One individual at the City of Trees, Bryan Cosgrove said that the i-tree numbers display the vital role which the trees and woods play in fighting climate change and ensuring the city’s regions are more secured for the future. By valuing the Greater Manchester’s trees and woods it can be ensured that they have not been priced just in terms of how they enhance the area’s looks, but also as natural assets which provide a wealth of vital economic and environmental advantages.
He also stated that the figures showing the number of trees that at risk from disease and pests are a cause of great concern and shows the need for immediate action by planting even more trees as well as ensuring the ones the ones that are already present remain safe for as long as possible. The City of Trees completed its largest i-tree survey outside the US across Greater Manchester.