Auckland's Climate Action Plan

Identify the best "carbon uptake/dollar" species for planting projects

Space is at a premium in Auckland, so planting projects need to be as effective as possible at offsetting CO2 emissions. Work should be done to identify (and use) the grasses, shrubs and trees that do this best, and enable better planning and prediction of carbon uptake. This would make it easier to understand the impact the work will have on emissions..

This would involve:

1 - Research on the C sequestration rates of different species (native and exotic, non-invasive). 

2 - Picking a suite of species that are found naturally in the Auckland region, or have already been introduced (*and aren't pests), and have other benefits including biodiversity values.

3 - Developing nursery programmes to maximize the availability of these species.

4 - Set out a planting formula that specifies the number of each plant in a planting programme (e.g. number of X/ha), making carbon offsetting calculations easier.

In my experience, the "best" tree species aren't likely to be natives, but (exotic hardwoods) will still offer many of the same benefits - including acting as a nursery crop to shade and support native growth at a later stage. 

How can we protect green spaces and increase green infrastructure in Auckland?

Strict rules around clearing of vegetation, possibly require financial offsetting (as contribution to council nursery - for example).

Where can we plant trees and increase canopy cover in Auckland?

Identify areas of low/poor C buffering and target for high growth planting projects.

Focus on scrubby, low density or weed-suppressed riparian areas, and extensively grazed and marginal land. Offer subsidies or guided access to 1BT to make transition of land cover easier for landowners. 

How can we grow our urban forest?

Better use of high C-sequestering tree species. 

 

Audit public spaces for use of open areas, plant more trees is possible.

How can we ensure all Aucklanders have equitable access to green spaces?

Figure out where we have more people with fewer green spaces. Focus planting projects where trees are lacking.

Run a green bus service that circles between different parks and recreational areas.

How can we use and protect green corridors to improve biodiversity?

Wider riparian planting zones, reduce disconnect between pockets of native or ecologically valuable blocks of trees/forest by reducing distance between them with targeting planting.

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