Water erosion affects soil carbon (C) loss and C enrichment in deposited sediment. To better understand the dynamics of water erosion and topsoil C loss with sediments after vegetation restoration, we studied the sediment yield from each rainfall event over two growing seasons (June through October) in four runoff plots with different vegetation covers (Robinia pseudoacacia, Spiraea salicifolia, Stipa bungeana, and bare soil) in an eroding soil landscape on the Chinese Loess Plateau in 2016 and 2017. The results showed that the C loss in the deposited sediments was reduced by 99.0 ± 0.5% when the soil was vegetated compared to bare soil. Decreased organic C enrichment ratios were shown under the vegetation cover (2.14 ± 0.68 for tree cover, 1.34 ± 0.20 for shrub cover, and 1.63 ± 0.26 for grass cover) compared to bare soil (2.65 ± 0.99). The decreasing organic C enrichment ratios were affected by the fractional vegetation coverage and soil organic C concentration. During organic C enrichment in the bare soil, the additional particulate organic C or mineral‐associated organic C were based on the C enrichment ratio. The results can improve our understanding of C enrichment processes under different vegetation covers and help predict the C enrichment ratio in a vegetation restoration area.

中文翻译：

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植被恢复的侵蚀土壤景观中表层碳的选择性迁移

水蚀影响沉积碳沉积物中土壤碳（C）的损失和碳的富集。为了更好地了解植被恢复后沉积物的水蚀和表层碳C损失的动态，我们研究了两个生长季节（6月至10月）每个降雨事件在四个具有不同植被覆盖的径流样地（刺槐，绣线绣线菊）中的沉积物产量。，Stipa bungeana和裸露土壤）在2016年和2017年的黄土高原侵蚀土壤景观中。结果显示，与裸露土壤相比，植被生长时沉积沉积物中的C损失降低了99.0±0.5％。与裸土（2.65±0.99）相比，植被覆盖下的有机碳富集率降低（树木覆盖为2.14±0.68，灌木覆盖为1.34±0.20，草覆盖为1.63±0.26）。降低的有机碳富集率受到植被覆盖率和土壤有机碳浓度的影响。在裸土中有机碳富集过程中，额外的颗粒有机碳或与矿物相关的有机碳均基于碳富集比。