Effects of stand condition and root density on fine-root dynamics across root functional groups in a subtropical montane forest.

ABSTRACT: Fine roots play key roles in belowground C cycling in terrestrial ecosystems. Based on their distinct functions, fine roots are either absorptive fine roots (AFRs) or transport fine roots (TFRs). However, the function-based fine root dynamics of trees and their responses to forest stand properties remain unclear. Here, we studied the dynamics of AFRs and TFRs and their responses to stand conditions and root density in a subtropical montane mixed forest based on a 2-a root window experiment. Mean (± SE) annual production, mortality, and turnover rate of AFRs were 7.87 ± 0.17 m m^-2 a^-1, 8.13 ± 0.20 m m^-2 a^-1and 2.96 ± 0.24 a^-1, respectively, compared with 7.09 ± 0.17 m m^-2 a^-1, 4.59 ± 0.17 m m^-2 a^-1<

SUBMITTER: Huang L 

PROVIDER: S-EPMC9307969 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature