Abstract: Based on investigation and laboratory analysis,carbon storage and distribution characteristics have been studied on natural secondary forest of Pinus tabulaeformis fshekannesis in Ziwuling area of Loess Plateau.The results showed that: 1) the rate range of carbon content was 0.413 7-0.517 4 g/g and 0.187 2-0.500 3 g/g in vegetation layer(trees,shrubs and grasses) and litter layer respectively.Furthermore,great significance of carbon content had appeared at different organs and layer.Carbon content in soil layer reduced dramatically with the depth.2) In spatial scale,total carbon density was 236.04 t/hm².The discending order of that in different layers was soil layer,vegetation layers,litter layer,and was 107.55 t/hm²,95.20 t/hm² and 33.29 t/hm² respectively.Furthermore,the total carbon storage capacity was 15.97 Mt.The soil carbon storage was 7.27 Mt,largest in this three carbon compartment.It takes up to 45.52% of whole forest,and 1.14 and 3.22 times,respectively for vegetation and litter layer carbon storages.