AbstractIn this study we investigated the variation of soil attributes according to urban-related land cover categories. The study was carried out in an urbanized watershed located in the Brazilian subtropical region (Sorocaba Municipality, Sao Paulo). Soil samples were collected considering the land cover category for analysis of physical, chemical and isotopic attributes. The land cover influenced the soils attributes. Soils from wooded and grassed areas presented significant differences, especially for values of C isotopes. Soil bulk density was significantly altered. According to considered land cover mosaic in the study, we estimated 10,241.28 tons of C stored in the thickness 20 cm of the watershed (whole area), and this amount is almost a half of the total potential of C storing in the watershed. We stress that projects of planned land cover should effectively implemented in urbanized regions to effectively contribute in storing more C and improving the soil-related ecosystem services.

中文翻译：

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与巴西流域城市化相关的土壤质量属性

摘要在这项研究中，我们根据与城市相关的土地覆盖类别调查了土壤属性的变化。该研究是在位于巴西亚热带地区（圣保罗索罗卡巴市）的城市化流域中进行的。收集土壤样品时考虑了土地覆盖类别，以分析物理、化学和同位素属性。土地覆盖影响土壤属性。来自树木繁茂地区和草地地区的土壤存在显着差异，尤其是 C 同位素值。土壤容重发生显着变化。根据研究中考虑的土地覆盖镶嵌，我们估计流域（整个区域）20 cm 厚处储存了 10,241.28 吨碳，这个数量几乎是流域内碳储存总潜力的一半。