Harvard Forest DIRT 1990 Soil Physical and Chemical Properties: %C and %N data

Samples were collected either by depth (0-15 cm mineral soil) or by horizon.

Pit data: Samples collected on April 24 1990 from pits located separately from plots.

Plot data:  Samples collected from plots between November 18 and December 2, 1991.

Results are calculated for 105-degree C oven-dry soil.



n = number of replicate cores

Avg = %soil C or % soil N, average of replicates

se = standard error of the mean





Pit data																

																

Date		Depth/														

Mo/yr	Pit#	Horizon	Avg%C	se %C	n %C	Avg %N	se %N	n %N								

4-90	1	L+F	43.20	3.91	3	1.74	0.14	3								

4-90	1	0-15	4.07	0.39	3	0.23	0.01	3								

4-90	2	Oea	18.70	3.35	3	0.86	0.15	3								

4-90	2	0-15	3.22	0.53	3	0.16	0.02	3								

																

Plot data																



Date		Depth/														

Mo/yr	Plot#	Horizon	Avg%C	se %C	n %C	Avg %N	se %N	n %N								

4-90	3	F+H	37.29	1.61	3	1.62	0.06	3								

4-90	3	0-15	4.86	0.53	4	0.26	0.03	4								

10-90	4	F+H	43.46	0.50	2	1.95	0.02	2								

10-90	4	0-15	5.81	0.25	2	0.32	0.02	2								

10-90	4	A	5.14	0.54	2	0.27	0.04	2

10-90	4	Bir	2.22	0.45	2	0.15	0.02	2

10-90	4	B2	0.55	0.15	2	0.04	0.01	2

10-90	4	Bc	0.31	0.06	2	0.02	0.01	2

10-90	4	C	0.25	0.06	2	0.02	0.003	2

10-90	5	F+H	34.22	2.79	14	1.35	0.11	14

10-90	5	0-15	4.13	0.25	4	0.22	0.02	4

10-90	7	F+H	23.12	1.56	6	1.09	0.07	6

4-90	18	F+H	43.75	3.42	5	1.76	0.12	5

4-90	18	0-15	5.41	0.68	4	0.27	0.04	4

10-90	21	F+H	48.24	0.92	4	2.07	0.05	4