土壤2011，Vol.43Issue(4)：617-622,6.
绰墩遗址古今水稻土黏土矿物特征比较研究
Clay Mineral Characteristics of Ancient Paddy at Chuodun Site in Yangtze River Delta
摘要
Abstract
Two layers of ancient paddy soil and one modern paddy soil were discovered in archeological excavation of Chuodunshan Relics in Kunshan, China. One of the ancient paddy soils could be ascended to 6 ka BP (prehistoric) and the other to 3 ka BP (Shang-Zhou Period). Two soil profiles, not far apart, named P01 (containing both ancient paddy soil layers and the modem paddy soil layer) and P03 (containing only the latter ancient paddy soil layer and the modern paddy soil layers) respectively, were fixed and soil samples were collected according to soil color and texture. In order to compare the difference of clay mineral characteristics between ancient paddy soils and modern paddy soil, the contents of iron oxides and manganese oxides and the constituents of clay mineral were analyzed. The results showed that there was no difference in total iron content between ancient paddy soils and modern paddy soils. Compared to ancient non-paddy soil (6 ka BP), some of the iron oxides, manganese oxides and smectite were lost in the profile of ancient paddy soil (6 ka BP). The mineral constituents in ancient paddy soil and present paddy soil were very similar, but the contents of 1.4 nm mineral in ancient paddy soil was lower than that of modem paddy soil. The evolution of clay minerals were similar between modern and ancient paddy soils: both were from hydromuscovite to chlorite and vermiculite and then to smectite.关键词
绰墩遗址/古水稻土/黏土矿物/铁锰氧化物/特征Key words
Chuodun Site/ Ancient paddy soil/ Clay mineral/ Iron oxides and manganese oxides/ Caracteristics分类
农业科技引用本文复制引用
程月琴,杨林章,曹志洪..绰墩遗址古今水稻土黏土矿物特征比较研究[J].土壤,2011,43(4):617-622,6.基金项目
中德科学基金项目(No.GZ518)资助. （No.GZ518）
