Table 3.

Values showing significance of the effects of plant growth elevations and habitats from Kruskal–Wallis one-way ANOVA on ranks (Tukey test) and Spearman rank order correlation for the bacterial communities of S. purpurea.

Samples a	Pairwise Comparison b	Kruskal–Wallis One-Way ANOVA on Ranks		Tukey Test		Spearman Rank Order Correlation
		H	p	q	p	CC c	p
Rs	GS vs. QH	0.0315	0.859			0.972	≤0.0001
	GS vs. XZ	0.0219	0.882			0.947	≤0.0001
	QH vs. XZ	0.184	0.668			0.951	≤0.0001
L	GS vs. QH	6.694	0.01	3.659	<0.05	0.063	0.739
	GS vs. XZ	3.925	0.048	2.802	<0.05	0.746	≤0.0001
	QH vs. XZ	0.0789	0.779			0.187	0.319
R	GS vs. QH	0.0919	0.762			0.904	≤0.0001
	GS vs. XZ	1.181	0.277			0.575	0.000958
	QH vs. XZ	2.078	0.149			0.583	0.000779
GS	Rs vs. L	0.0177	0.894			−0.443	0.0145
	Rs vs. R	0.184	0.668			−0.27	0.147
	L vs. R	0.735	0.391			0.802	≤0.0001
QH	Rs vs. L	7.4	0.007	3.847	<0.05	0.495	0.00568
	Rs vs. R	1.399	0.237			−0.345	0.0619
	L vs. R	0.614	0.433			0.196	0.296
XZ	Rs vs. L	2.941	0.086			−0.355	0.0538
	Rs vs. R	0.184	0.668			−0.523	0.00315
	L vs. R	4.918	0.027	3.136	<0.05	0.695	≤0.0001

Eighteen pairwise analyses were performed comprising each of the three possible pairings of the three different elevations and both collected samples (rhizosphere soil, leaves and roots) at the same elevation. Values in italics indicate significant differences or significant correlations. ^a Rs, rhizosphere soil; R, root; L, leaf. ^b GS, Gansu; QH, Qinghai; XZ, Tibet. ^c CC, correlation coefficient.