IMHO a greater concern than CO2 is topsoil loss and dead soil from decades of industrial *mining — err… monocropping of things like soybeans and corn.
Speaking of agriculture, here’s an interesting article about optimized grazing and restoration of pastures to work as a carbon sink. The downside is that it requires more than twice as much land.
https://civileats.com/2021/01/06/a-new-study-on-regenerative…
At White Oak Pastures, an eastern Georgia-based sixth-generation farm, Will Harris “went rogue” and began to transition away from industrial cattle ranching 25 years ago. Since then, Harris has been rotating organic cattle, chickens, and pigs on 3,000 acres of pasture in an effort to improve land degraded by years of conventional cotton and peanut production…
In November, a group of eight scientists published a comprehensive, peer-reviewed life cycle analysis on the research done at White Oak Pastures. The findings confirm that multi-species pasture rotations sequester enough carbon in soil to create a greenhouse gas footprint that is 66 percent lower than conventional, commodity production of beef. The catch is that the regenerative approach requires 2.5 times more land.
DB2