辽宁朝阳凤凰山古土壤铁锰胶膜及其基质矿质全量的比较研究

Comparative Study on the Ferrimanganic Coating and Its Total Matrix Mineral of the Ancient Soil at Chaoyang Lantau Peak of Liaoning Province

对比分析辽宁省朝阳市凤凰山古土壤剖面的土壤与土壤铁锰胶膜的化学组成,从土壤微环境方面对剖面各层次的基本理化性质和水热条件进行探讨。研究结果表明:土壤铁锰胶膜在物质组成和化学性质上与整个土体和基质有明显差异,土壤铁锰胶膜的全量化学组成符合风化壳组成规律,以SiO2,Al2O3,Fe2O3为主;剖面的胶膜主要是大量的铁锰胶膜和少量的粘粒胶膜;S1—S4古红土地层代表的气候条件较L2—L4古黄土地层代表的气候条件湿润的多。

A comparative analysis was made on the chemical compositions of the soil and the ferrimanganic coating of the ancient soil at Chaoyang Lantau Peak of Liaoning province. The basic physicochemical properties and hydrothermal conditions of its various sections were discussed from the perspective of the soil micro environment. The results showed that there was an obvious difference between the soil iron manganese cutans in material composition and chemical properties and the soil mass and the matrix, and that the chemical composition of soil iron manganese cutans agreed with weathering crust composition rules, mainly consisting of SiO2, Al2O3, Fe2O3; the coating of the soil section was mainly ferrimanganic coating and a small quantity of clay coating, the climate represented by S1-S4 pale-osol stratum was much humid than that represented by L2-L4 ancient loess strata.