Morphogenesis of Vertisols: A Model StudyEnglish Full Text
QIU RONG-LIANG; HUANG RUI-CAI and XIONG DE-XIANG (Department of Geology, Zhongshan University, Guangzhou 510275 China)(Department of Soil Science and Agricultural Chemistry, Nanjing Agricultural University, Nanjing 210014China)
Abstract: Studies on Vertisols of Southwest China show that the distribution of organic matter, mechanicalcomposition, 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.
- Series：
(D) Agriculture; (A) Mathematics/ Physics/ Mechanics/ Astronomy
- Subject：
Physical Geography and Topography
- Classification Code：
S151
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