摘要
研究西南地区变性土、铁铝土及水稻土７个剖面的地球化学和矿物学特征的结果表明：铁铝土在元素地球化学分类上可划为铝质富铝化类型，变性土也表现了一定的富铝化趋势，而水稻土最明显的特征是Ｆｅ、Ｍｎ及Ｃａ均相对富集。变性土粘土矿物以蒙脱石为主，铁铝土则以高岭石占优势，水稻土矿物组成取决于母质来源。根据主组元分析结果，可以探讨成土过程中不同剖面的元素分异和相关性，以及元素地球化学的演变趋势。
Seven profiles of vertisols, ferrallisols and buddy soils in South-West China were studied for the sakeof geochemical and clay mineral composition. According to element geochemical classification ferrallisols may be classified into allitic soil, also, vertisols had a tendency of allitic weathering. The obvious characteristics of paddy soilswere the relative enrichment of Fe, Mn, Ca. Montmorillite is the main clay mineral composition of vertisols and kaolinite being ferrallisols, but the composition of paddy soils rely on the origin of Parent materials. The evolve tendency'of element geochemistry and element correlation character in soil forming process of different soils can be clearlyprobed by main factor analysis.
出处
《南京农业大学学报》
CAS
CSCD
北大核心
1994年第4期60-65,共6页
Journal of Nanjing Agricultural University
基金
高等学校博士学科点基金
关键词
元素
地球化学
土壤
西南地区
中国
clay mineral
element geochemistry
main factor analysis
