Auxiliary material for this article contains a data set with soil properties and sets of horizon-specific original measurements of soil organic carbon, soil inorganic carbon, black carbon, bulk density, benzene polycarboxylic acids with 3–6 carboxylic groups (b3–b6), mellitic acid proportion, soil organic carbon stock, black carbon stock, 13C isotopic signature of soil organic carbon, and 13C isotopic signature of black carbon.

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gbc1692-sup-0001-readme.txtplain text document2Kreadme.txt
gbc1692-sup-0002-ds01.txtplain text document22KText S1. Soil properties under study.
gbc1692-sup-0003-t01.txtplain text document5KTab-delimited Table 1.
gbc1692-sup-0004-t02.txtplain text document2KTab-delimited Table 2.

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