额尔齐斯河流域主要支流平原河谷林群落结构及特征

薛志方, 刘彤, 王立生, 宋继虎, 陈宏阳, 徐玲, 袁也

Community structure and characteristics of plain valley forests in main tributaries of Ertix River Basin, China

XUE Zhi-Fang, LIU Tong, WANG Li-Sheng, SONG Ji-Hu, CHEN Hong-Yang, XU Ling, YUAN Ye

图2 额尔齐斯河3条支流平原河谷林特有树种的径级结构。I, DBH < 2.5 cm; II, 2.5 cm ≤ DBH < 7.5 cm; III, 7.5 cm ≤ DBH < 22.5 cm; IV, DBH ≥ 22.5 cm。DBH, 胸径。

Fig. 2 Class structures of diameter of endemic tree species in plain valley forests of three tributaries plain in Ertix River. I, DBH < 2.5 cm; II, 2.5 cm ≤ DBH < 7.5 cm; III, 7.5 cm ≤ DBH < 22.5 cm; IV, DBH ≥ 22.5 cm. DBH, diameter at breast height.