Please use this identifier to cite or link to this item: https://dspace.ctu.edu.vn/jspui/handle/123456789/95172
Title: Upgrading the Vietnam semi-quantitative soil classification system
Authors: Nguyen, Thanh Tuan
Ho, Quang Duc
Le, Thai Bat
Le, Anh Tuan
Nguyen, Quyet Chien
Lai, Quang Trung
Kyenze, Stanslaus Kikuvi
Tran, Thuy Chi
Keywords: International exchangeable
Semi-quantitative
Soil classification system
Diagnostic horizons
Diagnostic properties
Vietnam
Issue Date: 2022
Series/Report no.: Vietnam Journal of Earth Sciences;Vol.44, No.04 .- P.502-520
Abstract: 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.
URI: https://dspace.ctu.edu.vn/jspui/handle/123456789/95172
ISSN: 0866-7187
Appears in Collections:Vietnam journal of Earth sciences

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