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2 不同坡向红砂草地群落的主要特征指标(平均值±标准误差)

Table 2 The major characteristics of Reaumuria songarica in different aspects of slopes (mean ± SE)

坡向 Aspect	群落特征 Community properties					土壤含水量 Soil moisture content (%)
坡向 Aspect	盖度 Coverage (%)	密度 Density (株·m^-2)	高度 Height (cm)	地上生物量 Aboveground biomass (g·m^-2)	地下生物量 Belowground biomass (g·m^-2)	土壤含水量 Soil moisture content (%)
南 South	18 ± 1.26^c	8 ± 0.33^d	19.00 ± 1.14^c	54.99 ± 4.07^c	38.69 ± 1.97^c	6.10 ± 0.43^c
西 West	34 ± 1.70^b	15 ± 0.69^c	21.70 ± 1.08^b	75.81 ± 5.23^b	53.46 ± 2.87^b	7.60 ± 0.46^b
东 East	36 ± 1.44^b	17 ± 0.77^b	21.32 ± 1.06^b	77.48 ± 5.39^b	54.87 ± 2.91^b	8.20 ± 0.33^b
北 North	65 ± 2.60^a	25 ± 1.21^a	24.80 ± 0.99^a	91.75 ± 4.77^a	74.76 ± 3.88^a	11.50 ± 0.58^a