Please use this identifier to cite or link to this item: https://dspace.ctu.edu.vn/jspui/handle/123456789/71732
Title: Surface charge characteristics of a variable charge soil (Rhodic Ferralsols) in the Central Highlands
Authors: Nguyen, Quang Chon
Dinh, Van Cuong
Truong, Minh Ngoc
Keywords: Cation exchange capacity
Point of zero charge
Surface charge
Variable charge soil
Issue Date: 2020
Series/Report no.: Vietnam Journal of Science, Technology and Engineering;Vol. 62, No. 02 .- P.65-70
Abstract: Variable charge soils (VCS) predominantly contain minerals with variable surface charge density, such as kaolinite, gibbsite, goethite, hematite and amorphous minerals. The charge characteristics differ between profile horizons, the topsoil normally possesses net negative surface charge whereas the subsoil may have net positive surface charge and are largely dependent on soil pH. The soils pose a particular challenge to sustainable management in terms of low cation exchange capacity (CEC) at soil low pH and may develop appreciable anion exchange capacity (AEC) under acidic conditions. A full understanding of the variation of charge with soil pH, before establishing strategies for sustainable management of these soils, is essential.
URI: https://dspace.ctu.edu.vn/jspui/handle/123456789/71732
ISSN: 2525-2461
Appears in Collections:Vietnam journal of Science, Technology and Engineering

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