Storage and Flux of Nutrients in Disturbed and Undisturbed Tropical Moist Forest of Eastern Nepal

Table 13

Nitrogen, phosphorus, and potassium budget for vegetation in undisturbed forest stand (UF) and disturbed forest stand (DF) of moist tropical forest in Sunsari district, eastern Nepal.

Components	Nitrogen budget		Phosphorus budget		Potassium budget
	UF	DF	UF	DF	UF	DF
Nutrient stocks^1	5738.2	2704.4	537.7	252.9	5232.1	2470.8
Gross uptake^2	282.4	156.8	30.1	16.5	217.7	124.2
Re-translocation^2	74.7	40.0	10.7	5.8	53.5	23.7
Net uptake^2	207.7	116.8	19.4	10.7	164.2	100.5
Return, litterfall^2	99.7	46.6	8.3	3.9	64.4	31.3
Return, fine root^2	43.3	24.0	3.4	1.9	36.7	20.2
Total return^2	143.0	70.6	11.7	5.8	101.1	51.5
% total return of net uptake	69	60	60	54	62	51
Retention in vegetation^2	64.7	46.2	7.7	4.9	63.1	49.0
% retention of net uptake	31	40	40	46	38	49
Re-translocation:Gross uptake ratio	0.26	0.26	0.36	0.35	0.25	0.19

1. Kg ha^–1; 2. Kg ha^–1 yr^–1.