Biomass Vertical Distribution of Fine Root and Its Traits of Four Tree Species in Subtropical Natural Forest
We studied the fine root biomass in four soil depth and other traits of four tree species of Machilus pauhoi, Symplocos sumuntia, Sapium discolor and Vernicia fordii by using soil core method , and investigated the effects of species and tree age on biomass and traits in Dagangshan Mountain of Jiangxi Province .By multiple ANOVA, we detected the variation among traits and species , age and soil depth .Tree age had no significant influence on the distribution of fine root biomass , and fine root biomass per area of four tree species declined with the increase of the soil depth .Species identity influenced fine root biomass and traits significantly;however, soil depth did not have significant effects on fine root traits for four species . Tree age significantly affected specific root length (SRL) and tissue density of Sapium discolor, and fine root diameter, surface and tissue density of Vernicia fordii, respectively .