Table 2. Correlation between influencing factors and growth characteristics of P. euphratica root suckers.

Influencing factors	Density	Height	Basal diameter
Density of Sophora alopecuroides	−0.16	0.250**	0.25**
Soil moisture at depth of root suckers	−0.078	0.078	0.126
Degree of soil compactness	−0.19	−0.097	0.018
Adult individuals of P. euphratica	−0.244	0.094	0.163*
Mean distance to nearest trees	0.024	0.170*	0.109
Sheep grazing	0.053	−0.370**	−0.048

Significance: **P<0.01; *P<0.05.