The research focused on the evaluation of the effect of soil erosion processes on SOC sequestration rate after 5 years of cover crop soil management in Mediterranean vineyards (Sicily, Italy). Two paired sites, one in a sloping area and another one in a contiguous flat area, were chosen. The vineyard soils of the two plots of each paired site were managed with conventional soil tillage (CT) and Vicia faba cover crop (CC) the preceding 5 years. SOC was measured in three points along the slope (top, middle and foot parts) and in the flat area. Results showed that in the slope area the highest SOC content was found in CC management, with an average value of 9.52 ± 0.34 g kg⁻¹, whereas the SOC content under CT was 8.74 ± 0.20 g kg⁻¹. In the flat vineyard, the SOC ranged from 9.88 ± 0.11 g kg⁻¹ to 10.47 ± 0.20 g kg⁻¹ under CT and CC, respectively.

The SOC increase was 6% in the flat area and 9% in the sloping vineyard after five years since CC management adoption. The higher C sequestration rates in the sloping vineyard in comparison to the flat area could be attributed to the role of CC to prevent sediment and nutrient erosion. These results were compared with those by reference works and with the results of 39 vineyards paired-sites. Findings demonstrated that C sequestration rate is strongly correlated to slope gradient and the C sequestration per se due to the effect of added C input by the cover crop is overestimated.

该研究的重点是评估地中海葡萄园（意大利西西里岛）进行地表土壤管理5年后土壤侵蚀过程对SOC固存率的影响。选择了两个成对的地点，一个地点在倾斜区域，另一个地点在连续的平坦区域。在过去的5年中，使用配对的传统耕作（CT）和蚕豆覆盖作物（CC）对每个配对地点的两个地块的葡萄园土壤进行了管理。沿坡度（顶部，中部和脚部）和平坦区域的三个点测量了SOC。结果表明，在斜坡区，CC管理中的SOC含量最高，平均值为9.52±0.34 g kg ^-1，而CT下的SOC含量为8.74±0.20 g kg ^-1。。在平坦的葡萄园中，在CT和CC下，SOC分别为9.88±0.11 g kg ^-1至10.47±0.20 g kg ^-1。

自采用CC管理以来五年，平地的SOC增加了6％，坡地的SOC增加了9％。与平坦地区相比，坡地葡萄园中较高的C固存率可能归因于CC在防止沉积物和养分侵蚀方面的作用。将这些结果与参考资料以及39个葡萄园配对地点的结果进行了比较。研究结果表明，固碳速率与坡度密切相关，由于覆被作物增加碳输入的影响，固碳本身被高估了。