Table 3.

Results of a repeated-measures ANOVA for the effects of N addition dosage (D), N compounds type (T), period(P) and their interactions on leaf and stem mass remaining.

Parameters	P	T	D	P * T	P * D	T * D	P*T*D
Stem mass remaining	126.849***	5.047**	13.824***	1.498	1.073	0.699	0.716
Leaf mass remaining	55.109***	2.772	45.397***	0.235	0.989	0.676	0.809

Asterisks denote significant levels: ns, P > 0.05; **P< 0.01; and ***P< 0.001, respectively. n = 8.

Bold characters indicate significant differences.