2.5 Phylogenetic diversity analysis
\begin{equation}
\text{PD}\sum_{\{c\in C\}}\text{Lc}\text{\ \ \ \ \ \ }\backslash n\nonumber \\
\end{equation}C is a phylogenetic tree, c is a branch on C and Lc is the branch
length of C.
The box diagrams of the reference and disturbance sites were completed
by origin 9.1 (Seifert et al., 2014). The “pwr” (Stephane et al.,
2018) package in R was used for paired t test to clarify whether the
reference sites were different from the disturbance sites.