Abstract:

In order to explore the sources and distribution of macro-elements in soils, relationships between surface soils and deep soils, relationships between ratios and elements among different parent materials were studied in multi-purpose geochemical survey area of East China. The results showed that the macro-elements in surface soils and deep soils were significantly correlated, and ratios in mass ranged from 0.75 to 1.04 in the study area, The analysis results presented that macro-elements in surface soils mainly originated from parent material, and the distribution of geochemical elements is primarily influenced by both parent material and the geochemical characteristics of macro-element. Correlation analysis and factor analysis were applied to distinguish the paragenesis and assemblage rules in soil-forming process,which were CaO-MgO-Na₂O, Al₂O₃-TFe₂O₃-K₂O and SiO₂. The anlysis showed macro-elements had good Inheritance from parent materials, and elements paragenesis and assemblage rules and ratios in soils can be used to distinguish the lithology, sources and soil particle composition.

Key words: macro-element, geochemistry, Eastern China, soil, factor analysis