Heritage Trees part 2: street trees.
|Oaks and maples Cambridge Gardens 2019|
Street trees can often be the most beautiful objects in our streets. They are important to their communities as well as having environmental benefits. They are a living history in our landscape and can have particular connections. They may be fragments of a previous landscape incorporated into a modern street scene, such as the oaks at Cambridge Gardens once part of the Duke of Cambridge's estate. A great read with information on how to research street trees is a History of Street Trees by Dr. M. Johnston.
|New London plane trees CRE 1976|
|Beech tree, Chesterton Terrace 1976|
Studies show that the difference in local tree cover can reflect the various socio-economic groups. In Victorian times middle class areas were planted with many street trees or had higher quality front gardens than working class districts; now referred to as 'green equity'. It can be demonstrated by looking at old photos of the seven roads that were demolished to make up the Cambridge Road estate in the 1968, which were virtually treeless.
|London planes, oaks and limes 2019|
|Red ring = retention|
It seems these and many since planted, will be lost in the regeneration, with only ~35 trees retained according to plans recently exhibited (left). Trees have been given identities to soften their loss, such as the 'Piper willow'. It is actually its nearby sister, the 'Ely Court willow', which is the handsomer, but ill-fated tree.
Together they provide a pleasant and healthy environment for all of us - the urban forest of Kingston Town. It is a false premise to think that the loss of these currently - 200 trees - will not have an impact on local air quality, avoided water run-off, attenuation of the London heat island effect, insect productivity, bat activity and movement around the site, nest sites etc.
|Willingham Way 2019|
Government Indices of Deprivation show the areas that are most disadvantaged correspond very well to areas where there are no trees, no tree canopy cover and many vacant tree pits (Study of Waltham Forest, B. Crane http://www.bgcassociates.org.uk/articles). European and Canadian studies show that residents living in housing blocks with trees, spent less time at the doctors than those living without them. The same discrepancy was demonstrated with expenditure on medicines (countries where drugs are chargeable). Nature . com is full of scientific papers on this theme Neighbourhood greenspace and health 2015
|Stone pine removal|
Who owns the trees on the CRE? Do they belong to the community, the council or the developers? Street trees in narrow Victorian and Edwardian streets are often located in front gardens; an area over which the council has little control, unless it is in a conservation area. As controlled parking zones increase, trees are inevitably lost. But CRE is public land and a stand can be made. But tree removal has already begun - with the felling of 6 trees at Hawks Road Clinic and the chipping of this mature stone pine from a front garden - before the resource can even be accurately defined and quantified.
The council's current Tree Strategy attests that 100 trees are required to replace one aged 100. The combined age of the 200 trees on CRE will amount to many required replacements. The trees lost at Southwark's Heygate Estate due to regeneration accrued £1.3 million under the CAVAT system of valuing trees. The developer paid this sum over to the council by way of a s106 agreement.
However new trees could not be accommodated in the final scheme due to constraints of the cables and pipe filled trenches within the increased development footprint. Each tree removal will be for its very own different reason, but the result will be the same; if not careful our approach to street trees may become theatre rather than a matter of strategy and policy. Something the council does have control over is its Tree Strategy and negotiating position.