Biomass (kg m−2), soil quantity (kg m−2) and organic carbon storage (kg m−2) in different components of four ecosystems in the karst region, southwestern, China.

F, FS, TS, SG, SE are the abbreviations of secondary forest, forest - shrub transition, thorn shrubbery, rare shrub grassland and standard errors, respectively. Different lowercase letters denote significant differences of biomass or soil quantity among four ecosystems. Different capital letters denote significant differences of organic carbon stock among four ecosystems.