Simulation results showed that the average seasonal summer temperatures can be reduced in the range of around 0.5 and 2 C if Melbourne CBD were replaced by vegetated suburbs and planted parklands, respectively. (Increase from 17% to 33% cover)
Chen, D; et al
Journal of Environmental Pollution, Vol. 192, 2014
5-28% and 37-99% reduction in heat-related mortality rate have been estimated by doubling Melbourne's vegetation coverage and transforming the city into parklands, respectively