中国农业科技导报2018，Vol.20Issue(2)：146-154,9.DOI:10.13304/j.nykjdb.2017.0227
土壤绝对年龄测定方法研究进展
A Review of Soil Absolute Dating Methods
摘要
Abstract
Soil age is closely correlated with various factors of pedogenesis and of significant importance to the studies on soil bio-geochemistry,soil environmental change,geological assessment and archaeology.Since soil samples have suffered from very complecated environment conditions and interference factors,the dating studies of soil is more difficult than that on normal archaeological samples.Soil ‘absolute’ dating method involves many sciences,including pedology,geology and archaeology etc..Currently,soil dating techniques mainly include radioactive isotope dating,luminescence dating,electron spin resonance dating,palaeomagnetic dating and amino acid racemization dating etc..This paper summarized,compared and discussed the principles and research progress on these methods.Radioactive isotope dating had a wide range of optional elements,soil materials and time scales.Luminescence dating and electron spin resonance method with a relative long time scale were used to determine the quartz minerals in the soil:Amino acid racemic dating was suitable for soils with higher organic matter content.Soil rich in magnetic minerals could be used for the paleomagnetic dating,the method had a longer time scale.In order to evaluate the soil age more accurately,it was believed that the soil dating method should be selected on the basis of soil clay minerals and organic matter with physical and chemical characteristics,and the soil age could be evaluated integratedly by various methods.Moreover,these soil dating methods could provide strong evidences for soil genesis,climate change and long-term C and N cycle research.关键词
土壤绝对年龄测定/放射性同位素定年/释光测年法/电子自旋共振测年法/古地磁法/氨基酸外消旋测年法Key words
soil absolute age dating/radioactive isotope dating/luminescence dating/electron spin resonance dating/palaeomagnetic dating/amino acid racemization dating分类
农业科技引用本文复制引用
王晋,潘金华,庄舜尧..土壤绝对年龄测定方法研究进展[J].中国农业科技导报,2018,20(2):146-154,9.基金项目
国家自然科学基金项目(41671296)资助. （41671296）
