Soil Organic Carbon (SOC) sequestration within different riparian buffer systems (RBSs) is less documented. This study therefore investigated SOC sequestration potential in the upper 0–60 cm soil layer in diverse RBSs in Southern Ontario, Canada. Mean SOC stocks on an equivalent soil mass basis was significantly higher (p < 0.05) in RBSs (376.164 Mg C ha⁻¹) than the adjacent agricultural fields (148.56 9 Mg C ha⁻¹), irrespective of the buffer type. There were significant differences (p < 0.05) in SOC sequestration between 41-year-old rehabilitated buffers (179.04 Mg C ha⁻¹) and 156-year-old natural forest buffers (489.16 Mg C ha⁻¹), and between 99-year-old tree buffers (334.10 Mg C ha⁻¹) and 35-year-old grass buffers (121.11 Mg C ha⁻¹). Conversely, there was no significant difference (p > 0.05) between 103-year-old coniferous buffers (357.62 Mg C ha⁻¹) and 94-year-old deciduous buffers (310.59 Mg C ha⁻¹). Annual rate of SOC sequestration was significantly higher (p < 0.05) in rehabilitated buffers (4.71 Mg C ha⁻¹ year⁻¹) than in natural forest buffer (3.14 Mg C ha⁻¹ year⁻¹) but did not significantly differ (p > 0.05) between deciduous buffers (4.47 Mg C ha⁻¹ year⁻¹) and coniferous buffers (3.37 Mg C ha⁻¹ year⁻¹) and between tree buffers (3.92 Mg C ha⁻¹ year⁻¹) and in grass buffers (3.62 Mg C ha⁻¹ year⁻¹).The result of this study implies that the RBS types and management within the buffers can influence C sequestration in soils. Tree buffers have better potential for soil C sequestration than grass buffers. Overall, the results suggest that the establishment of RBSs as best management practice (BMP) should be considered for soil C sequestration in agricultural ecosystems.

不同河岸缓冲系统 (RBS) 中的土壤有机碳 (SOC) 封存记录较少。因此，本研究调查了加拿大安大略省南部不同 RBS 中上层 0-60 cm 土壤层的 SOC 固存潜力。无论缓冲类型如何，在 RBS (376.164 Mg C ha ^-1 )中，基于等效土壤质量的平均 SOC 储量显着高于相邻农田 (148.56 9 Mg C ha ^{-1 ) (p < 0.05)。}41 岁的恢复缓冲液 (179.04 Mg C ha ^-1 ) 和 156 岁的天然林缓冲液 (489.16 Mg C ha ^-1 ) 和 99-岁的树缓冲区（334.10 Mg C ha ^-1) 和 35 年的草缓冲液 (121.11 Mg C ha ^-1 )。^{相反，103 年树龄的针叶树缓冲液 (357.62 Mg C ha -1} ) 和 94 年树龄的落叶树缓冲液 (310.59 Mg C ha ^-1 ) 之间没有显着差异 (p > 0.05 )。^{修复缓冲区 (4.71 Mg C ha -1}年^-1 )的 SOC 年固存率 (p < 0.05) 显着高于天然林缓冲区 (3.14 Mg C ha ^-1年^-1 ) 但没有显着差异 (p > 0.05) 在落叶缓冲液 (4.47 Mg C ha ^-1年^-1 ) 和针叶树缓冲液 (3.37 Mg C ha ^-1年^{-1 ) 之间}) 和树木缓冲区 (3.92 Mg C ha ^-1年^-1 ) 和草缓冲区 (3.62 Mg C ha ^-1年^-1 ) 之间。这项研究的结果表明缓冲区内的 RBS 类型和管理可以影响 C固存于土壤中。树缓冲带比草缓冲带具有更好的土壤固碳潜力。总体而言，结果表明，应考虑将 RBS 建立为最佳管理实践 (BMP)，以用于农业生态系统中的土壤固碳。