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首页> 外文期刊>Land Degradation and Development >Effects of vegetation rehabilitation on soil organic and inorganic carbon stocks in the Mu Us Desert, northwest China
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Effects of vegetation rehabilitation on soil organic and inorganic carbon stocks in the Mu Us Desert, northwest China

机译：植被康复对穆美沙漠土壤有机和无机碳股的影响，中国西北

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In arid and semiarid areas, the importance of soil inorganic carbon (SIC) is at least as high as that of soil organic carbon (SOC) in affecting the regional carbon budget following vegetation rehabilitation. However, variations in SIC have been uncertain, and few studies have analyzed the interactions between the SOC and SIC pools. We measured SIC, SOC, C-13-SIC, and C-13-SOC after planting Mongolian pine (MP) and Artemisia ordosica (AO) on shifting sand land (SL) over 10years in the Mu Us Desert, northwest China. The results showed that, compared to SL, SIC stocks at 0-100cm in MP and AO lands significantly increased by 12.6 and 25.8Mgha(-1), respectively; SOC stocks in MP and AO lands significantly increased by 24.0 and 38.4Mgha(-1), respectively. Both C-13-SIC and C-13-SOC in the 2 plantation lands were significantly lower than those in SL were. All 315 samples exhibited a negatively linear relationship between SIC content and C-13-SIC (R-2=.70, p&.01) and showed positively linear relationships between SIC content and SOC content (R-2=.69, p&.01) and between C-13-SIC and C-13-SOC (R-2=.61, p&.01). The results demonstrated that vegetation rehabilitation on SL has a high potential to sequester SIC and SOC in semiarid deserts. The reduction in C-13-SIC and the relationship of SIC with C-13-SIC following vegetation rehabilitation suggested that SIC sequestration is likely caused by the formation of pedogenic inorganic carbon. The relationships between SIC and SOC and between C-13-SIC and C-13-SOC implied that the pedogenic inorganic carbon formation may be closely related to the SOC accumulation.
机译：在干旱和半干旱地区，土壤无机碳（SIC）的重要性至少与土壤有机碳（SOC）影响植被康复后的土壤有机碳（SOC）。然而，SIC的变化是不确定的，并且很少有研究分析了SOC和SIC池之间的相互作用。在穆美洲沙漠，西北地区穆美沙漠地区的蒙古松（MP）和Artemisia Ordosica（AO），测量了SiC，SoC，C-13-SiC和C-13-SoC。结果表明，与SL相比，在MP和AO土地中0-100cm的SIC股，分别显着增加12.6％和25.8mgha（-1）; MP和AO土地中的SoC股份分别显着增加了24.0％和38.4重（-1）。 2种植园土地中的C-13-SiC和C-13-SoC都显着低于SL中的C-13-SoC。所有315个样本在SiC含量和C-13-SiC之间表现出负线性关系（R-2 = .70，P＆amp; LT; .01），并在SIC内容和SOC内容之间显示出正线性关系（R-2 = .69 ，p＆amp; .01）和C-13-siC和C-13-Soc（R-2 = .61，P＆amp; .01）。结果表明，SL上的植被康复在半干旱沙漠中沉淀SIC和SOC的高潜力。 C-13-SiC的降低以及植被康复后C-13-SiC的关系表明，SiC封存可能是由形成的基础无机碳的形成引起的。 SiC和SoC与C-13-SiC和C-13-SoC之间的关系暗示了基础型无机碳形成可能与SoC积累密切相关。

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