Fig. 1: Aggregate macropore structures.
From: Soil macropore structure plays divergent roles in fresh and decomposed particulate organic matter
Including surface-connected porosity (green) and isolated (yellow) porosity (a), pore size distributions (b), and distance to pores (c) under the control, NPK, and NPKM treatments at Gongzhuling (GZL), Luancheng (LC), Yangling (YL), Jinxian (JX), and Mengcheng (MC) experiment sites. In (b) and (c), black, yellow and green represent the control, NPK, and NPKM treatments. Different lowercase letters indicate significant differences among different fertilizations (P < 0.05). Different lowercase letters above the lines denote statistically significant differences (P < 0.05) in image-based porosity (the sum of surface-connected porosity and isolated porosity) among the treatments in (a). Vertical bars represent standard errors (n = 4).
