Soil Organic Carbon Density and Storage Estimate of Shandong Province

Agricultural soil organic carbon density and storage is very important for global change and carbon cycle. Cited from the second general soil survey, the soil organic carbon density and storage of Shandong province were estimated by taking soil type as unit. Soil organic carbon density changed from 38.50 to 0.77kg m-2 with average of 6.00kg m-2, which is lower than the average of China. Soil organic carbon storage is 5.97×108t, 0.65% of the total of China. The soil local types of high organic carbon density are mainly distributed in the deposition place of geology cycle, such as piedmont plain, intermountain plain, and lowland of sea or lake. The soil local types of low organic carbon density are mainly distributed on upper places of hill with extensive soil erosion.