Canopy Cover across the City

​Annual Vegetation Cover

For the past four years, the City has used High Resolution Airborne Multispectral Imagery to complete annual vegetation cover
and condition analysis, and calculate changes to 'significant canopy'. The City has a target of increasing tree canopy cover
across the City to 18% by 2030. Currently the City has 12.9% average tree canopy cover across the City and over the last four
years total canopy cover has hovered between 12.3-12.9%. Given that there is a margin of error of ±1%, it is difficult to
determine if there has been improvement or not on a City-wide scale.

The City has a goal to protect trees in urban areas. For the past four years, the City has used High Resolution Airborne
Multispectral Imagery to calculate changes to 'significant canopy'. 'Significant canopy' is defined as tree canopy cover that
is taller than three metres and has a larger area than 20m². Canopy loss is the result of the removal of trees from public and
private land, as well as significant pruning.

Unfortunately, significant canopy loss rates have increased over the four-year period. During this period, the City has lost a
combined total of 808,000m² of tree canopy cover including 68% from residential land and 12% from the City's verges. In this
same period, Nollamara lost 11% of its tree canopy cover; Scarborough lost 10%; Balga lost 9%; and Doubleview and Innaloo
lost 8% of their tree canopy cover.

In relation to development zones: over the four-year period, properties in the R40 zone had a net loss of 15% of their tree
canopy cover and properties in the R30 zone and R25 zone lost 9% of their tree canopy cover. In relation to canopy growth
across the City: over the past four years, the City's existing canopy grew by 265,000m² but the chart shows that four years of
gain was effectively lost in one year (2015/16).

Million Trees Project

The City aims to plant one million trees and shrubs over a 17-year period. Over the past seven years, the City's planting
average has been 55,448 trees and shrubs per year. In the 2015/16 planting season, the City is estimated to have planted
71,000 trees and shrubs bringing its total planting numbers to 406,211.

Tree Canopy Cover Target for 2030

With a view to halting the loss of canopy cover, Council set a target of an average of 18% canopy cover across the City by 2030.