Fig. 2From: Total and dissolved soil organic and inorganic carbon and their relationships in typical loess cropland of Fengu BasinDensity (g m−3) of water soluble Ca + Mg over (a) 0–20 cm, (b) 20–40 cm, and (c) 40–100 cm in the YCB (red) and LFB (green). The figure was generated using ArcMap 10.5 (https://www.esri.com/)Back to article page