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Journal of Mountain Science

, Volume 6, Issue 2, pp 205–210 | Cite as

Tillage pedogenesis of purple soils in southwestern China

  • Xiubin HeEmail author
  • Yuhai Bao
  • Hongwei Nan
  • Donghong Xiong
  • Li Wang
  • Yanfeng Liu
  • Jingbo Zhao
Article

Abstract

Land cultivation and tillage process, and their consequent impacts on soil erosion, have been criticized as the main cause of degradation of land or soil quality. However, purple soils, classified as Regosols in FAO Taxonomy or Entisols in USDA Taxonomy, are formed from purple rocks of the Trias-Cretaceous system, have been developed or at least accelerated the development due to continual tillage operation, especially digging and ridging. The present study took micromorphological investigation on the sedimentary rocks and the soils under different operations of tillage. Results show that the purple rock of Feixiangguan Formation of the Trias system (T1f) is the easiest to physical weathering and the most fertile soil material enriched in nutrients, and it has been, therefore, mostly cultivated and intensively tilled around the year. It has the fastest soil formation rate. Soil formation rate in the cropland with conventional tillage is higher than that in the forestland and the grassland. It implies that the artificial brokenness and tillage disturbance play a great role in physical weathering and initiating soil formation processes.

Keywords

Tillage impact pedogenesis purple soil micromorphology southwestern China 

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Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH 2009

Authors and Affiliations

  • Xiubin He
    • 1
    Email author
  • Yuhai Bao
    • 1
    • 2
  • Hongwei Nan
    • 1
    • 2
  • Donghong Xiong
    • 1
  • Li Wang
    • 1
    • 2
  • Yanfeng Liu
    • 1
    • 2
  • Jingbo Zhao
    • 3
  1. 1.Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengduChina
  2. 2.Graduate School of the Chinese Academy of SciencesBeijingChina
  3. 3.Shaanxi Normal UniversityXi’anChina

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