In collaboration with the Swedish University of Agricultural Sciences, the field-scale variability of soil organic carbon (SOC) and its drivers was investigated. In this case, crop yields and the abundance of extractable aluminum was more important than soil texture. The latter underlines the importance of mineralogy for the stabilisation of SOC.
Jumpei Fukumasu spent some time in the course of this study to fractionate his soils at the Thünen-AK lab.
https://www.sciencedirect.com/science/article/pii/S0016706121004250