The ACT is a tricky thing to measure in terms of its overall ecological impact.
The Commonwealth taxes the whole of Australia and then spends a lot of money here in Canberra on intellectual capital generated by the Australian Public Service.
That money then buys food and power (with some very small exceptions) from the wider nation.
Without that national impact the city would be a local government area with a population equivalent at best to Gundagai (more likely Cooma).
But that’s not stopping the Standing Committee on Climate Change, Environment and Water (Meredith Hunter, John Hargreaves, Zed Seselja) from investigating the “ecological carrying capacity of the ACT and region”.
The answer is, like any city but more so: “as much as we’re willing to pay for”. Without paying for extra resources: “bugger all”.
That hasn’t stopped them releasing a discussion paper predicated on limiting the population to what can be sustainably produced in the region.
They await your submissions.