ZHANG Zhi-dan, LUO Xiang-li, WANG Ji-hong*, YAN Li, GAO Xue-ying, CHENG Cheng, CONG Gao, LIU Shu-xia*

(College of Resource and Environmental Science, Cultivating Base, National Key Laboratory of Jilin Province Ecological Restoration and Ecosystem Management, Jilin Agricultural University, Changchun 130118, China)

Abstract: The thesis selected the major cultivated soil (albic soil, black soil, chernozem) from Jilin Province, China as the research object, and used the XRD analysis method to study the composition characteristic of clay minerals in organo-mineral complex of soil (G0, G1 and G2), and deeply explored the evolution law and formation mechanism of clay minerals in organo-mineral complex of different soil types. Results show that the content of each complex was on a tendency of G0>G1>G2 for 3 different soil types, and the values of G0/G1 and G0/G2 were higher than 1.For the different components in organo-mineral complex, the order of the contents in group G1, G2 and (G0+G1+G2) was albic soil > black soil > chernozem except group G0, and the order of which was black soil > albic soil > chernozem. The XRD phase analysis indicates that clay minerals in organo-mineral complex of major cultivated soil were dominated by the 2∶1 clay mineral, and contained minerals such as montmorillonite, vermiculite, illite, kaolinite and quartz. Clay minerals in black soil and chernozem complex were dominated by montmorillonite and illite, while the clay minerals in albic soil were dominated by vermiculite and illite. The evolutions of various minerals in the three groups of complex were different from each other, and the order of effect by weathering on organo-mineral complex of soil was G0>G1>G2.

Keywords: cultivated soil; organo-mineral complex; clay mineral; XRD analysis

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ACTA MINERALOGICA SINICA Vol. 36, No. 1, 2016, Page 97-102