中国温带湿润地区土壤铁锰新生体性状、形成及成土环境解译

土壤地理 土壤铁锰新生体 土壤发育 成土环境解译 温带地区
王秋兵 2014-01 项目
Iron-Manganese new growth was the soil-forming products under different climatic and geological condition and recorded pedogenetic conditions for a long period of geological time since Quaternary. So, the composition and structural characteristics of the Iron-Manganese new growth is significant for soil science research. Samples of soil and their Iron-Manganese new growth are taken from a temperate region. The soils include zonal soils and those developed from different landscapes and historical geological periods. Using the research methodology of pedology, Quaternary geology and geochemistry, soil samples are analyzed for elemental composition, basic physical and chemical properties, the Iron-Manganese new growth mineralogical types, micro-morphological characteristics and enriching features of relevant elements by the use of physical and chemical analyses, X-ray diffraction, scanning electron microscopy, thin section and electron probe. The formation and evolution of Iron-Manganese new growth of soils in temperate region will be examined, in terms of hydrothermal effects, topography, time and parent material. Compared with data from soils developed in tropical and subtropical regions, this study will reveal the variation trends of the properties of Iron-Manganese new growth and the environmental factors affecting formation. The results of this study should lay a solid foundation to the soil taxonomic classification and pedogenetic environment interpretation in temperate regions. In addition, the findings will contribute to the theoretical and scientific evidence on the characteristics of contaminated material leaching and enrichment of soils. This has important theoretical and applied significance.
土壤铁锰新生体是第四纪不同气候环境、不同地质历史的产物,记录了土壤的形成环境。土壤铁锰新生体的物质组成和构造在土壤学研究过程中具有重要价值。本研究拟以我国温带地区土壤(包括地带性土壤、不同地形部位和不同地质历史时期夷平面上的土壤)及其所含铁锰新生体为研究材料,综合运用土壤学、第四纪地质学和地球化学的研究方法,采用理化性质分析、X光衍射、薄片、扫描电镜、能谱探针分析和电子探针等技术手段,分析土壤及铁锰新生体的元素组成及基本理化性质、矿物学类型、微形态学特征和相关元素富集特点,从水热条件、地形、时间、母质等因素探讨温带地区土壤中铁锰新生体的形成与演化规律,并通过与热带、亚热带地区土壤相关研究成果比较,揭示土壤铁锰新生体的性状与形成环境之间的演变规律。研究成果可为温带地区土壤科学分类奠定坚实基础,同时可为研究污染物质在土壤中淋溶、富集特点等提供科学依据,具有重要的理论意义和实际应用价值。