That study is about individual trees not a mature forest. “nature of productivity at the scale of the individual tree” As the average tree in a forest keeps ge

That study is about individual trees not a mature forest. “nature of productivity at the scale of the individual tree” As the average tree in a forest keeps getting older you keep sequestering carbon and older trees are sequestering faster than young ones. The issue is eventually you reach an equilibrium point where the average age becomes a constant because trees have a finite lifespan. Globally most forests were cut down relatively decently so they haven’t reached equilibrium. But when you start talking the next 100+ years it does become an issue.