Fig. 3From: Compositional and chemical characteristics of dissolved organic matter in various types of cropped and natural Chinese soilsHeatmap showing correlation of soil properties with fluorescence components and indices. HIX humification index, FI fluorescence index, BIX biological index, SOM soil organic matter, DOC dissolved organic carbon, DON dissolved organic nitrogen, CEC cation-exchange capacity, TN total nitrogen, TC total carbonBack to article page