Thetford Level II plot - Soil solution

 

Soil solution - Fortnightly collection (1996 to 2004)

	Element / compound	Depth to 10cm			Depth to 50cm
		Average	Standard error	Sample size	Average	Standard error	Sample size
pH	n/a	5.161	0.069	192	7.453	0.047	207
Conductivity (µS/cm)	n/a	226.38	12.19	71	422.4	26.73	70
Alkalinity (µeq/l)	n/a	39.8	7.913	4	1893	66.05	51
DOC (mg/l)	n/a	73.39	4.757	28	38.09	4.069	52
Macronutrients (mg/l)	NO3-N	17.97	0.909	162	26.75	1.743	181
	NH4-N	0.115	0.031	169	0.075	0.022	183
	N(NO2)	0.015	0.009	4	0.005	0.003	5
	N total	16.67	1.977	40	28.78	2.809	59
	SO4	4.376	0.171	169	7.094	0.300	182
	S total	4.275	0.315	45	6.547	0.441	61
	P(PO4)	0.169	0.015	152	0.019	0.004	159
	P total	0.171	0.024	52	0.020	0.001	77
	Ca	37.72	1.417	165	85.65	2.620	147
	Mg	2.789	0.101	165	2.868	0.110	135
	K	2.341	0.151	165	0.689	0.063	147
Micronutrients	Na (mg/l)	6.963	0.418	165	8.267	0.223	177
	Fe (mg/l)	0.362	0.014	165	0.060	0.006	179
	Mn (mg/l)	0.737	0.068	165	0.273	0.033	177
	Zn (µg/l)	79.07	9.423	26	11.19	1.694	43
	Cu (µg/l)	21.88	5.095	26	12.95	1.124	43
Trace cations	Al (mg/l)	1.058	0.045	165	0.216	0.024	182
	Cr (µg/l)	1.515	0.150	26	0.476	0.072	43
	Ni (µg/l)	7.134	0.808	26	2.816	0.237	43
	Pb (µg/l)	12.47	1.535	26	2.586	0.409	43
	Cd (µg/l)	0.698	0.109	26	0.193	0.051	43
	Co (µg/l)	2.550	0.540	24	0.979	0.333	34
	Sr (µg/l)	55.47	7.597	21	162.0	8.349	34
	Ba (µg/l)	93.43	20.67	21	31.55	4.885	34
Trace anions	Cl (mg/l)	10.70	0.503	169	14.76	0.808	182
	F (mg/l)	0.110	0.016	41	0.145	0.008	61
	Si (µg/l)	4.650	0.363	26	5.564	0.180	43