. 2016 Apr 22;56(3):328–334. doi: 10.1007/s12088-016-0577-5

Table 3.

Soil chemical properties of the different age stages

Forest ages	Nitrate nitrogen (mg/kg)	Ammonium nitrogen (mg/kg)	N (%)	C (%)	pH
10	14.63^a	4.13^c	0.68^a	9.63^a,b	4.63^d
30	13.04^a	8.56^a	0.60^a	8.16^b	5.53^a
50	6.32^a	2.79^d	0.71^a	9.54^a,b	5.10^b
70	14.38^a	4.53^b,c	0.75^a	9.42^a,b	5.20^a,
100	16.09^a	5.46^b	0.92^b	11.78^a	4.67^c

^a–dDifferent letters in the same column means significant differences at 0.05 levels among samples