Characterization and Performance of Amazonian Dark Earths –Opportunities for Future Soil Management
Johannes Lehmann Johannes Lehmann
Department of Crop and Soil Sciences, Cornell University Department of Crop and Soil Sciences, Cornell University
http://www.georgiaitp.org/carbon/PDF...s/JLehmann.pdf
Look at the graph on page 16. I tried to paste it here but no luck.
There is an enormous amount of charcoal in these soils
At soil depths of
0-40 cm 20% !
60-100cm c10% !
