The City’s approach to reducing the carbon footprint is multifaceted. It includes City-led initiatives and community education and awareness programs. Through the City’s tree planting programmes, the City is committed to reducing carbon emissions by increasing vegetation cover to combat rising temperatures and the urban heat island effect throughout the City’s public open, space, verges and medians.
The Park Revitalisation Programme aims to reduce the carbon footprint by undertaking eco-zoning and hydro-zoning in City parks. Water consumption is reduced by creating hydro-zones to allow different watering rates to be applied to different areas of the parks. By developing eco-zones turf areas are mulched which reduces water consumption. In 2020-21, the City implemented eco-zoning and hydro-zoning principles in Macaulay Park reducing water usage for irrigation by 42%. Sustainable features to reduce the carbon footprint include use of recycled materials, trees for shade, garden beds planted with waterwise, local plant species and use of removed damaged tree trunks in playgrounds. Tree trunks are retained and stored for re-purposing as nature-play areas eg balancing logs and steppers.
The Waterwise Verge Rebate Programme supported residents to replace grass, synthetic lawn and hardscaped (e.g. paving) verge treatments with native plants and mulch. The programme aimed to reduce the carbon footprint by supporting positive environmental impacts including increased biodiversity, canopy cover and ecological corridors, and reduced greenhouse gas emissions and water use. The programme included free street trees, native plants, seeds and mulch as well as nursery vouchers and workshops.
The innovative adoption of a Smart Control Irrigation System resulted in decreasing the City’s groundwater usage by 86,027kL in 2020-21 compared to 2019-20. Previously when it rained, City staff would manually turn off each irrigation controller at individual parks. This proved inefficient and costly, and a poor use of staff time and more importantly impacted the City’s water efficiency. The innovative system means responses occur in real-time to environmental conditions ensuring the City’s irrigation programs are efficient and effective. The technology supports the City to manage and enhance urban parks in a cost-effective manner by improving operational efficiency and reducing water and power usage.
In responding to climate change, the City prioritised initiatives to reduce water usage by improving green urban environments. With the goal to upgrade at least one park per year, the City uses detailed landscaping and irrigation designs to reduce irrigated areas by implementing hydro-zoning, eco-zoning and waterwise landscaping. When upgrading play spaces, poor condition turfed areas are removed and replaced with mulch and nature-based play items and irrigation is switched off. Trees across the City that are removed due to being in poor condition and unsafe are stored and then upcycled and used as nature play equipment in City play spaces. In 2021/22, 10 play spaces were upgraded, converting irrigated turf areas to unirrigated mulched areas.