Measured	N	productivity	for	the	control	plots	in	the	sites	"UP2,"	"UP3,"	"FP2,"	"FP3,"	
and	FP4	of	the	BNZ-LTER	study.	The	foliage	biomass	and	foliage	nitrogen	were	estimated	
in	1989	The	annual	production	is	an	estimate	of	the	production	that	occurred	from	1989
through	1993	divided	into	an	annual	basis.								

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Site	Species	Aboveground	Foliage	Foliage	N	productivity								
	annual	biomass	nitrogen(%)	(kg	growth/									
	production	(kg/m2)	kg	foliar	N)									
	(kg/m2)													
________________________________________________________________________________________________														
UP2A	birch	0.149	0.115	1.84	70.42									
UP2A	poplar	0.058	0.048	1.71	70.66									
UP2A	spruce	0.08	0.327	1.08	38.09									
UP2B	birch	0.132	0.09	1.84	79.71									
UP2B	poplar	0.172	0.162	1.71	62.09									
UP2B	spruce	0.029	0.12	1.08	37.81
UP2C	aspen	0.265	0.141	2.02	93.04
UP3A	birch	0.032	0.019	1.91	88.18
UP3A	spruce	0.188	1.257	1.07	29.56
UP3A	alder	0.004	0.008	2.49	20.08
UP3B	birch	0.143	0.111	1.91	67.45
UP3B	spruce	0.216	0.74	1.07	42.86
UP3B	alder	0.024	0.012	2.49	80.32
UP3C	birch	0.023	0.017	1.91	70.83
UP3C	spruce	0.341	1.131	1.07	43.76
UP3C	alder	0.014	0.006	2.49	93.71
FP2A	poplar	0.621	0.216	1.56	184.29
FP2A	alder	0.136	0.08	2.69	63.2
FP2B	poplar	0.913	0.457	1.56	128.06
FP2B	alder	0.081	0.062	2.69	48.57
FP2C	poplar	0.659	0.336	1.56	125.73
FP2C	alder	0.084	0.052	2.69	60.05
FP3A	poplar	0.378	0.32	1.84	64.2
FP3A	spruce	0.221	0.35	1.03	77.49
FP3A	alder	0.024	0.011	2.56	85.23
FP3B	spruce	0.283	0.366	1.03	91.25
FP3B	alder	0.015	0.008	2.56	73.24
FP3C	poplar	0.284	0.253	1.84	61.01
FP3C	spruce	0.429	1.151	1.03	52.37
FP4A	birch	0.011	0.006	1.91	95.99
FP4A	spruce	0.244	1.516	0.99	33.1
FP4A	alder	0.013	0.006	2.52	85.98
FP4B	spruce	0.25	1.785	0.99	30.99
FP4B	alder	0.019	0.008	2.52	94.25
FP4C	spruce	0.258	1.135	0.99	39.8