Table 1. Basic properties of soils used in this study.

	HZ	YH	QJ	QY	TY
Location	N 30°10′	N 30°25′	N 25°24′	N 26°45′	N 28°25′
	E 120°05′	E 119°44′	E 103°48	E 111°52′	E 111°26′
pH (H2O)a	4.20	4.21	4.36	4.43	4.47
pH (KCl)b	3.29	3.34	3.66	3.87	3.89
Total N (g kg−1)	5.02	2.07	2.46	1.27	1.79
Total C (g kg−1)	54.9	22.7	22.0	12.7	17.9
SOC (g kg−1)	31.9	12.1	12.8	7.60	9.54
NH4+-N (mg kg−1)	39.2	9.45	22.1	11.5	12.9
NO3−-N (mg kg−1)	31.3	13.2	203	2.77	2.87
CEC (cmol kg−1)	24.1	18.0	10.7	22.1	19.0
H2O %	28.8	29.5	24.0	22.7	27.4
Particle size (%)
Sand	43.4	14.1	14.2	8.2	11.5
Silt	41.2	45.0	32.7	63.9	68.3
Clay	15.4	40.9	53.1	28.9	20.2

Abbreviations: CEC, cation exchange capacity; HZ, Hangzhou; SOC, soil organic carbon; TY, Taoyuan; QJ, Qujing; QY, Qiyang; YH, Yuhang.

^apH (H₂O) was determined with a soil to water ratio of 1:2.5.

^bpH (KCl) was determined with a soil to 1  KCl ratio of 1:2.5.