Upgrading the Vietnam semi-quantitative soil classification system


  • Nguyen Thanh Tuan Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, Hanoi, Vietnam
  • Ho Quang Duc Soils and Fertilizers Research Institute, Hanoi, Vietnam
  • Le Thai Bat Vietnam Soil Science Society, Hanoi, Vietnam
  • Le Anh Tuan Soils and Fertilizers Research Institute, Hanoi, Vietnam
  • Nguyen Quyet Chien Hanoi National University of Education, Hanoi, Vietnam
  • Lai Quang Trung Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, Hanoi, Vietnam
  • Stanslaus Kikuvi Kyenze St. Joseph’s School-Kibwezi, P.O. Box 180-90137 Kibwezi, Kenya
  • Tran Thuy Chi Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, Hanoi, Vietnam




international exchangeable, semi-quantitative, soil classification system, diagnostic horizons, diagnostic properties, diagnostic materials, Vietnam


A quantitative soil classification system (SCS) has been the aim of generations of Vietnam soil scientists. The SCS is a system of harmonizing the traditional Vietnam SCSs and creating a capability for international exchange. Up to now, there are three partially developed Vietnam official SCSs and three Vietnam semi-quantitative ones. This article aims to upgrade the Vietnam semi-quantitative SCS based on Vietnam's traditional pedogenetic (qualitative) and the World Reference Base for Soil Resources in 2014 (quantitative). For this purpose, a study was conducted to compare and analyze the correlation between the published Vietnam semi-quantitative SCSs and the official ones. Six SCSs were compared and analyzed. The results show that the Vietnam semi-quantitative SCS-2006 was selected to continue adapting and updating. Apart from the necessary adjustments, the study added 12 diagnostic horizons, 4 diagnostic properties, 2 diagnostic materials, 2 soil groups, 11 soil types, and 37 soil sub-types in the Vietnam semi-quantitative SCS-2006. Finally, the Vietnam semi-quantitative SCS includes 25 soil groups, 86 soil types, 492 soil sub-types with 30 diagnostic horizons, 7 diagnostic properties, 6 diagnostic materials, 58 qualifiers, and 9 criteria for defining soil varieties. The system keeps the traditional aspects of Vietnam's official SCSs and allows the exchange of international soil information.


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How to Cite

Nguyen Thanh, T., Ho Quang, D. ., Le Thai, B. ., Le Anh, T., Nguyen Quyet, C., Lai Quang, T. ., Kikuvi Kyenze, S. ., & Tran Thuy, C. (2022). Upgrading the Vietnam semi-quantitative soil classification system. Vietnam Journal of Earth Sciences. https://doi.org/10.15625/2615-9783/17245