Abstract The scarce information about soil carbon (C) storage in water-stressed ecosystems limits our understanding on soil contribution to the C cycle in arid zones. This study, performed in arid NW Mexico: (i) estimated soil capacity to store organic C (SOC) and inorganic C (SIC) linked to topography; (ii) determined the spatial distribution of regional SOC stocks; and (iii) analysed if different land-uses affect the C:N ratio. Contents of SOC from different landforms and land uses varied from

中文翻译：

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墨西哥西北部沙漠灌丛生态系统土壤碳储量空间分布

摘要 缺水生态系统中土壤碳 (C) 储存的稀缺信息限制了我们对干旱地区土壤对碳循环的贡献的理解。这项研究在干旱的墨西哥西北部进行：(i) 估计与地形相关的土壤储存有机碳 (SOC) 和无机碳 (SIC) 的能力；(ii) 确定区域 SOC 储量的空间分布；(iii) 分析不同的土地利用是否影响 C:N 比率。不同地貌和土地利用的 SOC 含量各不相同