The thing I like about reforestation is that it's a positive, tangible, symbolic, easily understood concept that is likely relatively easy to get public support

The thing I like about reforestation is that it's a positive, tangible, symbolic, easily understood concept that is likely relatively easy to get public support for. Conversely, carbon reduction campaigns feel more like being scolded. When I was young, the big environmental push was centered around saving the rainforest. I would like to see a return and expansion of this idea. It has many benefits beyond just global warming such as fighting desertification. To be clear, I also support renewables and the other things listed by OP.