Figure 4. Adult diameter at breast height structure and
regenerated individual height structure of D. pectinatumcommunities across the three studied sites. The solid and dashed lines
represent fitted power and exponential functions, respectively, and
their respective R2 and P values are indicated
below the site names.
The size structure of the D. pectinatum community presented an
inverted J type, and the percentage (less than 20%) of
seedlings/saplings was lower than that of the other growth stages across
the three study areas, especially for Bawangling (16.2%) and
Jianfengling (15.4%) (Figure 3). Both the power and exponential
function models fit the changes in adult (P <0.05) and
regenerating individual (P <0.001) mortality across the
three sites well (Figure 4, Table 2). The adult and regenerating
individuals had the lowest mortality rates in Diaoluoshan, followed by
Jianfengling, and the highest mortality rates were observed in
Bawangling.
Table 2. Power and exponential function model results for the
mortality of adults and regenerating individuals across the three sites.