The city of Edmonton is trying to regulate the growing of trees on private property, and the removal of said trees. The City wants that you should pay for a permit to remove old trees, and have control. That is just government over reach for sure, with that will come a big ticket if you remove without permit. With that also come a bit of liability, I think.
Trees drag moisture from the soil, and that causes the soil to shrink, taking houses with it. Who caries the liability now?