Effects of three coniferous plantation species on plant‐soil feedbacks and soil physical and chemical properties in semi‐arid mountain ecosystems

Forest Ecosystems

Table 2 Pearson correlation coefficients between soil nutrient contents and physical properties

	SOC	TN	TP	TK	\({\text{N}\text{H}}_{4}^{+}\)-N	\({\text{N}\text{O}}_{3}^{-}\)-N	AP	AK	Soil bulk density	Soil capacity	Total porosity
TN	0.98**
TP	0.34	0.45
TK	–0.50	–0.44	–0.24
\({\text{N}\text{H}}_{4}^{+}\)-N	0.81**	0.81**	0.18	–0.24
\({\text{N}\text{O}}_{3}^{-}\)-N	0.72*	0.73*	0.28	–0.20	0.95**
AP	0.92**	0.88**	0.17	–0.28	0.87**	0.81**
AK	0.79*	0.83**	0.30	0.03	0.91**	0.88**	0.88**
Soil bulk density	–0.88**	–0.91**	–0.31	0.47	–0.82**	–0.69*	–0.71*	–0.73*
Soil capacity	0.95**	0.96**	0.27	–0.46	0.84**	0.73*	0.82**	0.78*	–0.97**
Total porosity	0.80**	0.87**	0.29	–0.25	0.69*	0.55	0.61	0.70*	–0.95**	0.92**
Capillary porosity	0.85**	0.84**	0.11	–0.20	0.95**	0.90**	0.91**	0.91**	–0.79*	0.87**	0.71*