Field Scale Studies on the Spatial Variability of Soil Quality Indicators in Washington State, USA

Table 2

Pearson correlation (𝑟) matrix correlating chemical and biological soil parameters on a subfield and full field basis (whole field 𝑛=220, subfield 𝑛=50 to 55). Values in red are significant correlations where .01<𝑃<.05% probability level.

	%C		pH		EC		SIRC		RESP		PNP		TPF
	Subfield	Full field
pH	0.02	−0.21
	0.21
	−0.39
	0.10
EC	−0.18	−0.01	−0.29	−0.35
	0.20		0.01
	0.34		−0.36
	0.07		−0.54
SIRC	−0.01	−0.01	0.39	0.31	−0.04	−0.07
	−0.02		0.4		0.27
	0.02		0.09		−0.12
	−0.04		0.32		−0.13
RESP	−0.11	−0.17	0.14	0.2	0.29	−0.09	0.48	0.15
	0.06		0.37		0.10		0.54
	0.10		−0.21		−0.14		−0.05
	−0.06		0.27		−0.18		0.17
PNP	0.16	0.32	−0.01	0.14	0.15	0.08	−0.05	0.02	0.20	−0.01
	0.23		0.65		0.27		0.28		0.30
	0.01		0.04		0.17		−0.25		0.01
	−0.16		0.3		−0.13		0.33		0.11
TPF	0.14	0.23	0.37	−0.02	−0.16	0.02	0.38	0.22	0.03	0.04	−0.28	−0.05
	0.07		0.3		0.32		0.33		0.26		0.13
	0.31		−0.17		−0.06		0.18		0.28		0.15
	0.08		−0.28		0.23		0.12		−0.05		0.07
qCO2	0.01	−0.01	−0.43	−0.11	0.01	0.04	−0.06	−0.29	0.45	0.52	0.16	0.13	−0.07	−0.17
	0.12		−0.07		−0.16		−0.21		0.4		−0.01		−0.08
	0.09		−0.12		−0.04		−0.3		0.73		0.14		0.09
	0.03		0.06		−0.03		0.12		0.68		−0.17		−0.03