Large-scale revegetation in desertified land might promote the sequestration of global soil carbon, but the influencing factors on inorganic carbon accumulation processes that absorb CO₂ through abiotic “inorganic respiration” processes remain unclear. Several study sites were selected in the Mu Us Sandy Land: quicksand land (0 years), semi-fixed sand land (6 years), and three nearby shrub and arbor forest lands (20, 30, and 51 years). During 20–51 years of revegetation, soil organic carbon density (SOCD) and inorganic carbon density (SICD) significantly increased by 2.5–7.5 times and 1.7–7.0 times for shrub forest and 3.1–7.5 times and 2.6–7.8 times for arbor forest compared with quicksand land, but the difference between the two studied forest lands were not statistically significant. After revegetation in desertified land, the content of total nitrogen (TN), available potassium (AK), cation exchange capacity (CEC), clay, Ca²⁺, and Mg²⁺ also greatly enhanced, and they were positively correlated with SOC and SIC, while bulk density and pH slightly decreased, which were negatively correlated with SOC and SIC. T-value biplot importance ranking further indicated that TN was the most sensitive factor affecting the accumulation of SOC and SIC, and its contribution rate to SOC and SIC reached 89.8% and 88.1%, respectively. Moreover, SOC was also related to AK, CEC, and clay, while SIC was more affected by clay, Ca²⁺, and Mg²⁺ during revegetation. In conclusion, afforestation with shrubs and arbors on the Mu Us Sandy Land promoted the sequestration of SOC and SIC synergistically by modified soil physicochemical properties.

荒漠化土地大规模重新植被可能促进全球土壤碳的固存，但吸收CO _{2 的}无机碳积累过程的影响因素通过非生物“无机呼吸”过程仍不清楚。在毛乌素沙地中选择了几个研究地点：流沙地（0 年）、半固定沙地（6 年）和三个附近的灌木和乔木林地（20、30 和 51 年）。在20-51年的重新植被中，灌木林土壤有机碳密度（SOCD）和无机碳密度（SICD）显着增加了2.5-7.5倍和1.7-7.0倍，乔木林分别增加了3.1-7.5倍和2.6-7.8倍与流沙地相比，但两者所研究的林地差异无统计学意义。荒漠化土地复垦后全氮（TN）、速效钾（AK）、阳离子交换量（CEC）、粘土、Ca ²⁺、Mg ^{2+ 含量}也大大增强，与 SOC 和 SIC 呈正相关，而容重和 pH 略有下降，与 SOC 和 SIC 呈负相关。T值双标重要性排序进一步表明，TN是影响SOC和SIC积累最敏感的因素，其对SOC和SIC的贡献率分别达到89.8%和88.1%。此外，SOC还与AK、CEC和粘土有关，而SIC在植被恢复过程中受粘土、Ca ²⁺和Mg ^{2+ 的}影响更大。综上所述，毛乌素沙地灌木乔木造林通过改变土壤理化性质，协同促进了SOC和SIC的固存。