extremely significantP < 0.01
The increase rates for herb and shrub species were 6.77 and 1.76 times higher, respectively, than that for tree species, and the difference between the rates for herbs and shrubs was extremely significant ( P < 0.01).
The increase rates for herb and shrub species were 6.77 and 1.76 times higher, respectively, than that for tree species, and the difference between the rates for herbs and shrubs was extremely significant ( P < 0.01).