Trees are great but part of a larger picture of ecosystems that do a great job of taking co2 out of air and building with it. Soil is a huge deal for how effective ecosystems are at scrubbing co2. All plants die off and decay but much of their carbon can get sequestered into the soil. Healthy soil has deeper microbes and insects breaking down and sequestering better, and improving future plants growth.

Basically stop lawnmowing and industrial farming.