[Effects of addition of leaf litter with different chemical properties on soil organic carbon mineralization and priming effect].

Litter inputs can affect the mineralization of soil organic carbon (SOC). However, it is yet unknown how the input of leaf litter with different chemical properties drives SOC mineralization and priming effect. In this study, C-labeled leaf litter of six tree species were added to soil cores (10 cm depth) collected from a natural secondary forest in subtropical region.

[Effects of addition of organic carbon with different chemical structure on the fate and accumulation of exogenous carbon in red and sandy soils].

Plant litter input has important influences on soil CO emission and soil organic carbon (SOC) formation in terrestrial ecosystem. However, it is not well known for the fate of carbon when exogenous organic matters with different chemical structures are added to soil with different textures. In this study, we added the uniformly C-labelled substrates of glucose, starch, and cellulose to red soil and sandy soil, and compared the net C accumulation and recovery and its proportions in soil releasing CO, SOC, dissolved organic carbon (DOC) and microbial biomass carbon (MBC) pools.