Chronic Nitrogen Amendment Plots
Litterfall and Tree Biomass
1988 - 1996 Collections
All biomass values in g m-2
f/n: HFBIOMAS.asc
AGB = Aboveground Biomass




These values are total aboveground biomass
for each plot, all species included.
Measurements made in late fall or early winter.			
		Plot	
Treat	Year	Area(m2)AGB(g/m2)	
PC	88	900	14570	
PH	88	900	14617	
PL	88	750	14960	
PNS	88	900	13372	
HC	88	900	11154	
HH	88	900	11282	
HL	88	900	11297	
HNS	88	900	13030	
PC	90	900	15386	
PH	90	900	15365	
PL	90	900	15960	
PNS	90	900	14069	
HC	90	900	12088	
HH	90	900	12593	
HL	90	900	12366	
HNS	90	900	14003	
PC	92	900	16105	
PH	92	900	15597	
PL	92	900	16525	
PNS	92	900	14608	
HC	92	900	13038	
HH	92	900	13765	
HL	92	900	13153	
HNS	92	900	15085	
PC	93	900	16239	
PH	93	900	15625	
PL	93	900	16591	
PNS	93	900	14578	
HC	93	900	13392	
HH	93	900	14521	
HL	93	900	13719	
HNS	93	900	15578	
PC	96	900	17012	
PH	96	900	15992	
PL	96	900	17163	
PNS	96	900	15144	
HC	96	875	14821	
HH	96	900	18071	
HL	96	900	15044	
HNS	96	900	16749	

     
    	Net93-88	Net96-88
	5 year growth	8 year growth
Treat	AvgAnnIncr.	AvgAnnIncr.
PC	333.81		305.26
PH	201.71		171.87
PL	326.31		275.46
PNS	241.18		221.52
HC	447.60		458.35
HH	647.87		848.62
HL	484.40		468.40
HNS	509.54		464.89



Litterfall Biomass	
Annual totals, 1988 - 1996	
Means of 9 baskets/plot
All species included	


Year	1988	1989	1990	1991	1992	1993	1994	1995	1996
PC	186.83	338.67	315.59	289.06	323.98	312.67	311.23	442.51	227.32
PL	213.32	390.55	358.48	291.54	417.80	375.11	329.54	546.75	291.11
PNS	259.59	355.93	371.79	377.73	436.09	370.58	409.39	571.20	309.22
PH	173.72	397.08	368.92	389.06	473.72	412.18	386.71	614.15	328.19
HC	230.51	286.30	266.25	308.57	272.91	302.20	316.12	315.02	310.10
HL	255.53	256.95	275.97	336.56	276.92	309.19	347.89	353.00	301.77
HNS	112.73	278.07	273.10	309.63	261.70	368.98	339.45	395.99	381.04
HH	242.21	290.08	284.79	380.67	303.68	366.91	387.43	392.57	278.21