Pedosphere 6(3): 259--268, 1996
ISSN 1002-0160/CN 32-1315/P
©1996 Soil Science Society of China
Published by Elsevier B.V. and Science Press
Morphogenesis of vertisols: A model study
QIU Rong-Liang1, HUANG Rui-Cai2 and XIONG De-Xiang2
1 Department of Geology, Zhongshan University, Guangzhou 510275 (China)
2 Department of Soil Science and Agricultural Chemistry, Nanjing Agricultural University, Nanjing 210014 (China)
      Studies on Vertisols of Southwest China show that the distribution of organic matter, mechanical composition, carbonates and spore-pollen in their profiles exhibits a definite differentiation and the radiocarbon age has a functional variation with soil depth, which suggests that pedoturbation model is a kind of incomplete model for genetic study and that the disturbance and inversion of solums of Vertisol are not as rapid and absolute as expected. In further consideration of the characters of swelling pressure and shear strength of Vertisol, vertic soil and other zonal soils, it is speculated that soil mechanics model is more adaptable for interpreting the morphogenesis of Vertisols without any contradiction with soil properties.
Key Words:  pedoturbation model, soil mechanics model, Vertisols
Citation: Qiu, R. L., Huang, R. C. and Xiong, D. X. 1996. Morphogenesis of vertisols: A model study. Pedosphere. 6(3): 259-268.
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