In the California Sierra Nevada mountains almost all of the land was harvested for timber in the last 150 years. These forests contained mostly trees that were

In the California Sierra Nevada mountains almost all of the land was harvested for timber in the last 150 years. These forests contained mostly trees that were many hundreds to thousands of years old. So if we plant the right trees and let these harvested forests keep growing, instead of harvesting them again, we will get a thousand years of increasing carbon capture. I'm not sure about other forest ecosystems, but "short term" could be hundreds to thousands of years. A quite useful timescale for a large carbon sink as we try to get to a more normal atmospheric carbon dioxide level in the future.