Table 1 Various functional relationships between species diversity and elevations. The α-Diversity indices used in this study were the Simpson index, Shannon index, and Pielou index. Data not presented in parentheses are the coefficients of determination of the equations, and data in parentheses are the P values of the significance testing of the equations. The numbers of data points are 80, 64, and 20 from sub-quadrats for the herb, shrub, and tree communities, respectively.
Plant type | Diversity index | Exponential function | Linear function | Logarithmic function | Quadratic polynomial function | Power function |
|---|---|---|---|---|---|---|
Herb | Simpson | 0.34 (0.03) | 0.35 (0.03) | 0.33 (0.03) | 0.35 (0.02) | 0.33 (0.03) |
Shannon | 0.19 (0.32) | 0.19 (0.12) | 0.19 (0.12) | 0.22 (0.09) | 0.21 (0.10) | |
Pielou | 0.49 (0.01) | 0.51 (< 0.01) | 0.48 (0.01) | 0.55 (< 0.01) | 0.46 (0.01) | |
Shrub | Simpson | 0.72 (0.05) | 0.63 (0.06) | 0.57 (0.08) | 0.73 (0.14) | 0.64 (0.06) |
Shannon | 0.64 (0.06) | 0.50 (0.12) | 0.42 (0.17) | 0.69 (0.17) | 0.55 (0.09) | |
Pielou | 0.42 (0.16) | 0.44 (0.15) | 0.47 (0.13) | 0.52 (0.33) | 0.45 (0.14) | |
Tree | Simpson | < 0.01 (0.83) | 0.01 (0.75) | < 0.01 (0.90) | 0.42 (0.07) | < 0.01 (0.98) |
Shannon | 0.06 (0.41) | 0.05 (0.46) | 0.03 (0.58) | 0.40 (0.08) | 0.04 (0.52) | |
Pielou | 0.65 (< 0.01) | 0.66 (< 0.01) | 0.71 (< 0.01) | 0.80 (< 0.01) | 0.70 (< 0.01) |
