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利用1980年第二次土壤普查数据和2010年耕地地力评价数据,结合近30年来的调查研究资料和田间试验数据,建立该地区耕地土壤固碳潜力模型。预测该地区土壤固碳潜力(饱和碳密度)为4.95 kg m-2,其空间分异明显,整体表现为东部高西部低、北部高南部低;根据最新土壤调查数据所建立的模型进行估算,该区域潜在耕地土壤碳汇密度增加值为2.18kg m-2,可增加耕地土壤固碳量为57.52 Tg。
Based on the data from the second soil census in 1980 and the evaluation data of cultivated land productivity in 2010, combined with the data from the past 30 years of research and field experiments, the model of soil carbon sequestration potential in cultivated land was established. The soil carbon sequestration potential (saturated carbon density) in the area was 4.95 kg m-2. The spatial variability of the soil was obvious. The overall performance was low in the east and low in the south and high in the north. According to the model established by the latest soil survey data, The added value of soil carbon sink density of potential cultivated land in this area is 2.18kg m-2, which can increase the carbon sequestration of cultivated land to 57.52 Tg.