Early stage of carbon accumulation on volcanic ash deposits of the 2000 year eruption in Miyake-jima Island

沿着植被发育的三个地块，展示了11年前火山灰沉积的早期碳积累。植被、凋落物和土壤的碳量分别为132-4502gm^-2、19-1067gm^-2和212-1047gm^-2；由于分解系统不发达，植被的碳积累速率高于土壤。估算的土壤碳通量与植被发育相对应。在最发达的灌木期植被中观察到A层的形成。

Three plots along vegetation development are conducted to demonstrate early stage of carbon accumulation on 11 years old volcanic ash deposits. Carbon amounts of vegetation, litter and soil were 132-4502gm^<-2>, 19-1067gm^<-2> and 212-1047gm^<-2>. Rates of carbon accumulation of vegetation were higher than those of soils because of undeveloped decomposition systems. Estimated carbon fluxes of soils corresponded to vegetation development. Formation of A horizon was observed in the most developed shrub stage vegetation.