【摘要】 对黑土有机质特性空间分布的充分认识与了解,是管理好土壤养分和合理施肥的基础。应用经典统计学方法,分析了东北黑土表层1100个样点的有机碳和全氮空间分布规律。结果表明:土壤有机碳和全氮平均含量分别为19．25 g/kg和1．89 g/kg,从南到北随纬度增加而增加,土壤有机碳和全氮与纬度的相关系数分别为0．70和0．76。以上研究结果为进一步深入了解黑土有机质退化机理提供了理论依据。更多还原

【Abstract】 To understand sufficiently the spatial distribution of soil organic matter properties of Mollisol is the basis for managing soil nutrition and fertilizing scientifically. Based on 1100 samples of the soil organic carbon (SOC) and soil total nitrogen (TN) gotten from the Mollisol in the Northeast of China, the spatial distributions of SOC and TN were analyzed. The results show that the mean concentrations of SOC and TN were 19.25g·kg-1 and 1.89g·kg-1, respectively. The distribution patterns of SOC and TN increased gradually from south to north with latitude with the relative coefficients of 0.70 and 0.76, respectively. All the above results supply a theoretical basis for further studying the degradation of soil organic matter in Mollisol.更多还原