四平地区不同母质黑土土壤地球化学研究

在吉林省四平地区黑土分布区选择3个具有不同成土母质特点的黑土样点进行土壤剖面样品进行测试。对所得数据进行对比分析表明, 不同采样点母质层土壤的地球化学元素含量具有显著差异: 表层黑土虽然对母质的地球化学性质有一定的继承性, 但在区域内相同的气候和植被等成土因素长时间的影响下, 土壤地球化学元素的含量发生了相应的变化, 不同母质条件下形成的黑土在地球化学性质上表现出一定的趋同性。

Research on geochemistry of different parentmaterial profiles of black soil in Siping area

Based on the research in black soil in Siping area, three points with different parent material profiles were sampled. Through testing the contents of trace elements and constant elements of the samples, and analyzing the data by the means of longitudinal and transverse analyses, the results show that the contents of geochemistrical elements have great discrepancy in different parentmaterial layers. Though there are inheritance characters in the black soils in surface, the contents of soil geochemical elements have changed in the same climate and vegetations for a long time, and the geochemical characteristics of the black soils in different parent materials incline to coherence.