Fig. 3From: Characterisation of soils under long-term crop cultivation without fertilisers: a case study in JapanBasic organic components and pedofeatures in the soil thin sections. a Plant charcoal (C) from the Ap horizon of N-UF. b Fungal filaments (F) from the Ap horizon of N-UF. c Intact excrement pedofeature (Ie) in a root residue (R) from the A1 horizon of E-UF. d Fauna such as Julidae (Ju) from the Ap horizon of E-UFBack to article page