. 2018 Jan 12;8:695. doi: 10.1038/s41598-017-18997-1

Table 3.

Correlation coefficients between soil pore parameters determined by CT scanning and soil characteristics.

Factors	Pore number			Porosity			Circularity
Factors	>0.13 mm pore	>1.0 mm pore	0.13–1.0 mm pore	>0.13 mm pore	>1.0 mm pore	0.13–1.0 mm pore	>0.13 mm pore	>1.0 mm pore	0.13–1.0 mm pore
Field capacity	0.7958^*	0.7941^*	0.8036^*	0.442	0.0794	0.7680^*	0.9513^**	0.9198^**	0.9213^**
Aggregate content	0.7018^*	0.7283^*	0.6984^*	0.5617	0.1352	0.5494	0.9191^**	0.8795^*	0.9962^**
Bulk density	−0.7861^*	−0.7654^*	−0.8036^*	−0.3065	−0.0004	−0.8505^*	−0.9027^**	−0.8748^*	−0.8134^*
Total porosity	0.6180^*	0.5858	0.6457^*	0.0939	0.0000	0.7233^*	0.8184^*	0.7653^*	0.6617^*
Capillary porosity	0.6126^*	0.5718	0.6439^*	0.0726	0.0002	0.7630^*	0.7775^*	0.5945	0.5945
Aeration porosity	−0.5604	−0.5935	−0.5582	−0.3213	−0.0247	−0.3775	−0.8924^*	−0.8272^*	−0.9822^**
Non-active porosity	0.4982	0.5427	0.4897	0.3653	0.0328	0.2792	0.8426^*	0.7767^*	0.9992^**

Values labelled with “*” and “**” denote a significant difference at P < 0.05 and P < 0.05, respectively.