Carrying capacity for tree biomass of a subtropical mangrove along a river in Japan inferred from forest structural features

Abstract A subtropical mangrove along the Miyara River in Ishigaki Island, Japan was studied for evaluating the carrying capacity for biomass of the mangrove stands. The stem diameters D , tree height H , and fine roots mass were measured, while aboveground biomass ( AGB ) and belowground coarse root biomass ( BGB coarse ) were estimated. The AGB , BGB coarse , and fine root mass were estimated as 130, 31, and 13 Mg ha −1 in the Rhizophora stylosa ; 271, 94, and 11 Mg ha −1 in the downstream Bruguiera gymnorrhiza ; and, 228, 81, and 6.4 Mg ha −1 in the upstream B. gymnorrhiza stand, respectively. The AGB and BGB coarse in the R. stylosa stand…