红砂根系分叉数和分支角度权衡关系的坡向差异

郑慧玲, 赵成章, 徐婷, 段贝贝, 韩玲, 冯威

Trade-off relationship between root forks and branch angle of Reaumuria songarica on different aspects of slopes

ZHENG Hui-Ling,ZHAO Cheng-Zhang,XU Ting,DUAN Bei-Bei,HAN Ling,FENG Wei

表1 红砂生长特征随坡向梯度的变化(平均值±标准误差)

Table 1 Growth characteristics of Reaumuria songarica along an aspect gradient (mean ± SE)

坡向 Aspect	密度 Density (株·m^-2)	高度 Height (cm)	根冠比 Root-shoot ratio	根深 Root depth (cm)	比根长 Specific root length (cm·g^-1)
南 South	2 ± 0.08^c	15.60 ± 0.52^c	0.52 ± 0.02^a	16.92 ± 0.86^c	22.27 ± 1.34^c
西 West	3 ± 0.12^b	19.26 ± 0.96^b	0.46 ± 0.03^b	29.35 ± 1.58^b	26.43 ± 1.56^b
东 East	3 ± 0.11^b	18.42 ± 0.73^b	0.43 ± 0.02^b	31.28 ± 1.64^b	27.18 ± 1.38^b
北 North	5 ± 0.21^a	23.85 ± 1.43^a	0.27 ± 0.01^c	47.76 ± 2.48^a	35.06 ± 1.40^a