Soil Science Society statement

In 2001, the Soil Science Society of America drafted a position paper that included this statement:

"Worldwide, SOC [soil organic carbon] in the top 1 meter of soil comprises about 3/4 of the earth's terrestrial carbon; nevertheless, there is tremendous potential to sequester additional carbon in soil. For example, many cropland soils of the United States have lost as much as 50% of their original SOC due to the effects of land clearing and tillage. Such conventional farming practices 'burn' SOC just as we burn fossil fuels today. However, in the case of SOC this historical decline can be reversed, which is not the case for fossil fuel reserves."

See the rest at https://www.soils.org/pdf/pos_paper_carb_seq.pdf