Growth characteristics of two groups of P. euphratica root suckers in forest gaps.

Values are means ± s.e. Basal D, basal diameter of root suckers; Root D, diameter of roots on which root suckers sprouted. Significance: **P数据以平均值±标准误（standard error，s.e.）表示。基径（Basal D）：根蘖的基部直径；根蘖着生根系直径（Root D）：萌发根蘖的根系直径。显著性：**P