This report indicates the 2 degree rise in world temperature can be postponed for 20 years if land managers look at how sustainable their practices are. Extensive world wide data has been used to arrive at the figures that the conclusions from this report are derived. In particular they have identified feedback loops that will accelerate (or reduce) climate change, via land degradation (or conservation) 

https://www.ipcc.ch/2019/08/08/land-is-a-critical-resource_srccl/