A Soil Morphological Index for Paleosol Research  

作　　者：LI Xuyong LI Baoguo GUO Zhengtang ZHAO Chengyi SHI Yuanchun 1 Commission for Integrated Survey of Natural Resources, CAS, Beijing 100101, China. 2 Department of Soil and Water, China Agricultural University, Beijing 100094, China 3 Institute of Geology, CAS, Beijing 100029, China 4 Institute of Xinjiang Ecology and Geography, CAS, Urumqi 830011. China 

出　　处：《Chinese Science Bulletin》1999年第S1期218-222,共5页

摘　　要：We developed a soil morphological index to quantitatively measure the degree ofpaleosol development. For its development, this index combined paleopedogenic features with tensoil macro- and micro-morphological properties from morphological descriptions of Potou and JiuZhoutai loess sections in the Loess Plateau of China. These ten properties are: rubification (colorhue and chroma), total texture (texture type, stickiness and plasticity), melanization (color value),microstructure, fine material (【0.01 mm), primary carbonate, biotite, fe(hydr)oxides, secondarycarbonate (micromorphology) and illuvial clay. Future study may reject some of these propertiesand add others. The index works well with the loess-paleosol sequences. The soil morphologicalindex successfully identifies paleosols and weak-paleosols.We developed a soil morphological index to quantitatively measure the degree of paleosol development. For its development, this index combined paleopedogenic features with ten soil macro- and micro-morphological properties from morphological descriptions of Potou and Jiu Zhoutai loess sections in the Loess Plateau of China. These ten properties are: rubification (color hue and chroma), total texture (texture type, stickiness and plasticity), melanization (color value), microstructure, fine material (<0.01 mm), primary carbonate, biotite, fe(hydr)oxides, secondary carbonate (micromorphology) and illuvial clay. Future study may reject some of these properties and add others. The index works well with the loess-paleosol sequences. The soil morphological index successfully identifies paleosols and weak-paleosols.

关 键 词：SOIL MORPHOLOGICAL INDEX PALEOSOL LOESS SECTION 

分 类 号：P534[天文地球—古生物学与地层学]