Abstract:

According to the data of staple crops yield and cultivated land area during the last 20 years,the carbon storage and carbon density of the main crops in the Wan Jiang Urban Belt were estimated,and the variation of the compositions and the amount of carbon storage of the farmland ecological system were analyzed with the computational method in crop yields and carbon storage transformation model,on the base of the carbon rates of the main crops,economic coefficient,root shoot ratio and grains water content.The result showed that both the carbon storage and the carbon density of the crops in the farmland ecosystem of the Wan Jiang Urban Belt increased slightly during the last 20 years,accounting for 236% of the whole amount of carbon emission from energy consumption in Anhui province in 2010.This reflected the carbon absorbing effect obviously,whereas there was a variation of the carbon storage and the carbon density of the crops.The rice was the main crop for the carbon storage,accounting for 6659% of the whole carbon storage.The maximum amount of the carbon storage of the crops was in LuAn and Chuzhou,while the minimum was in Tongling.Correspondingly,the maximum amount of the carbon density of the crops was in Chuzhou and Ma’anShan,and the minimum was in Tongling.Finally,some suggestions about the improvement of the carbon storage and the carbon density were propounded according to the variation of the compositions and the amount of carbon storage of the farmland ecological system