We have already been planting tress for a long time. In Sweden it is the law that after a forest is cut down it must either be replanted or have enough viable t

We have already been planting tress for a long time. In Sweden it is the law that after a forest is cut down it must either be replanted or have enough viable trees remaining for natural regrowth. For managed forests it is often a revenue increase to replant trees since it increase the efficiency of the land. The amount of tree planting that goes into environmental purposes are tiny compared to the amount of trees planted as part of the natural cycle of tree harvesting and regrowth. However, cutting down tress and then replanting it do not capture a lot of carbon. Much of it either get burned or decompose into methane. Planting trees without protecting it from being cut down is not going to do much to compensate excess greenhouse gases that get created from burning fossil fuels.