Estimate of Soil Organic Carbon Storage and Spatial Distribution in Forest Vegetation in Jiangxi Province

The forest soil organic carbon(SOC) is one of the important parts of the whole soil organic carbon pool.Study on the forest soil organic carbon plays an important role in the research of the soil organic carbon pool.In this paper,the soil organic carbon storage in forest vegetation in Jiangxi Province is estimated with inventory data base on GIS approach.With the index of soil organic carbon enrichment,the soil organic carbon distribution characteristics in different types of soil and different districts are analysed.The results show:the soil organic carbon storage amounts within 20cm and 100cm depth of forest vegetation in Jiangxi Province are 401.04×106 t and 1 025.73×106 t.The organic carbon density of 20 cm of forest soil ranges from 0.89~10.92 kg/m2,and the organic carbon density of 100 cm of forest soil ranges from 2.71～35.61 kg/m2.The indexes of soil organic carbon abundance of soil and district of 100 cm depth are between 0.3~3.57 and 0.96~1.03 respectively,which is closely related with climate,vegetation,landforms and human activity.