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绰墩遗址古今水稻土黏土矿物特征比较研究
引用本文: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.
作者姓名:程月琴  杨林章  曹志洪
作者单位:1. 中国科学院南京土壤研究所,南京210008;中国科学院研究生院,北京100049
2. 中国科学院南京土壤研究所,南京,210008
基金项目:中德科学基金项目(No.GZ518)资助
摘    要:在江苏绰墩山遗址考古发掘中,发现了在剖面不同深度埋藏的距今约6000年的史前水稻土层、距今约3 000年的商周史前的古水稻土层和现代水稻土层.本研究为了比较古今水稻土黏土矿物特征的差异,以土壤剖面P01(包含史前古水稻土、商周史古水稻土和现代水稻土)与P03(仅含商周时期古水稻土和现代水稻土)为对象,测定其各种形态铁锰...

关 键 词:绰墩遗址  古水稻土  黏土矿物  铁锰氧化物  特征

Clay mineral characteristics of ancient paddy at Chuodun site in Yangtze River Delta
CHENG Yue-qin,YANG Lin-zhang,CAO Zhi-hong.Clay mineral characteristics of ancient paddy at Chuodun site in Yangtze River Delta[J].Soils,2011,43(4):617-622.
Authors:CHENG Yue-qin  YANG Lin-zhang  CAO Zhi-hong
Institution:Institute of Soil Science, Chinese Academy of Sciences
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 modern 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 modern 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.
Keywords:Chuodun Site  Ancient paddy soil  Clay mineral  Iron oxides and manganese oxides  Caracteristics
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