【摘要】 采用野外调查与室内分析相结合的方法,对徐州市城区表层土壤进行了系统采样分析,测定其pH值、有机质和磁化率,并结合相关分析法研究土壤有机质和磁化率间的相关关系。结果表明,徐州市城区土壤总体上呈碱性,但也存在酸化趋势;土壤有机质含量偏低但不同区域差异较大;土壤磁化率总体偏高而频率磁化率较低,表现出污染土壤特征。相关分析表明,土壤有机质含量与磁化率间的相关性较弱,反映了土壤受人为活动的影响较为强烈。更多还原

【Abstract】 The topsoil samples in urban region of Xuzhou city were analyzed by means of field survey and laboratory analysis,and then the soil p H value,organic matter content and magnetic susceptibility in the samples were measured and the relationship between organic matter content and magnetic susceptibility was studied with the aid of correlation analysis.The results indicated that the urban soil in the mass was alkaline and tended to be acidified gradually,and the content of soil organic matter had a low average with a large fluctuation range,and the magnetic susceptibility was low and frequency susceptibility was relatively high,which showed that the soil may be polluted. The correlation between organic matter and magnetic susceptibility was very weak because of strong influence by anthropogenic disturbance.更多还原