Table 3.

Pearson’s correlation coefficients of relationships among the quantity of AFB₁ producing Aspergillus in soil (cfu·g⁻¹), positive rate %, the proportion of Aspergillus isolates with AFB₁ producing ability ˃1000 ng·mL⁻¹, 100–1000 ng·mL⁻¹, 0–100 ng·mL⁻¹ , the proportion of L-stain, S-strain and NS-strain, the average AFB₁ quantification, the potential risk of AFB₁ contamination (ng·mL⁻¹/g soil), average temperature (TEM), the longitude (LONG), latitude (LAT), pH and soil moisture (%).

	cfu·g−1	%Positive Rate	% ˃ 1000	%100–1000	%0–100	AFB1	AFB1 Risk	%L	%S	%NS	TEM	%LONG	%LAT	pH	% Moisture
cfu·g−1	1.00
%Positive rate	0.65 **	1.00
% ˃ 1000	−0.34	−0.26	1.00
%100–1000	0.13	0.37	−0.40	1.00
%0–100	0.17	0.10	−0.51	0.21	1.00
%L	0.07	0.23	−0.20	0.23	0.14	1.00
%S	−0.06	−0.18	0.04	−0.07	−0.21	−0.31	1.00
* NS	−0.03	−0.11	0.17	−0.17	0.00	−0.78 **	−0.35	1.00
AFB1	−0.31	−0.32	0.87**	−0.41	−0.36	−0.25	−0.31	0.45	1.00
AFB1 risk	0.39	0.50 *	0.29	0.18	0.08	0.08	0.15	−0.18	0.05	1.00
TEM	0.33	0.61 *	−0.06	0.15	0.19	0.24	−0.22	−0.09	−0.01	0.42	1.00
%LONG	−0.06	−0.38	−0.33	−0.01	0.03	−0.26	−0.23	0.40	−0.08	−0.46	−0.64	1.00
%LAT	−0.36	−0.71 **	0.03	−0.14	−0.21	−0.30	−0.10	0.36	0.18	−0.48	−0.76 **	0.78 **	1.00
pH	0.42	0.48	−0.41	0.43	0.30	0.49	−0.20	−0.35	−0.39	0.06	0.21	−0.06	−0.28	1.00
%moisture	0.15	0.35	0.27	−0.02	−0.34	0.11	0.15	−0.20	0.10	0.36	0.42	−0.64 **	−0.29	0.09	1.00

Correlation significance，* 0.01 < p < 0.05 ，** p < 0.01; n = 16.