Current lockdowns and recession has reduced carbon emission drastically around the world. In some areas the emissions have dropped by up to 25 percent due the heavy industry and transportation basically shutting down.
If you want to find something positive from this pandemic this could be it. Unfortunately it's just temporary. As soon as it's safe to get back to normal operations emissions will be back up as well.
There might be some short term impact from this downturn. But as the economy tries to recover it will most likely be at the expense of the ecology. That recovery will require a lot of cheap energy, so there wont won't be huge investments for the clean energy made. It could even get worse as huge new projects are being started relying on cheap and dirty energy.