Morphogenetic features of soils in the Cat Tien National Park,southern Vietnam |
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Authors: | O S Khokhlova T N Myakshina A N Kuznetsov S V Gubin |
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Institution: | 1.Institute of Physicochemical and Biological Problems of Soil Science,Russian Academy of Sciences,Pushchino, Moscow oblast,Russia;2.Severtsov Institute of Ecology and Evolution,Russian Academy of Sciences,Moscow,Russia;3.Joint Russian–Vietnamese Tropical Research and Technological Center,Hanoi,Vietnam |
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Abstract: | Morphogenetic features of soils on the selected plots in the Cat Tien National Park in southern Vietnam have been studied with the use of a set of morphological, analytical, and instrumental methods. The lithological factor and topographic position play the leading role in the development of the particular genetic soil features. The soils can be subdivided into four groups according to these factors. The soils developing from volcanic deposits with a predominance of tephra can be classified as thin clayey brown tropical soils (Dystric Skeletic Rhodic Cambisols (Clayic)), and the soils developed from less weathered colluvial derivatives of basalts with some admixture of tephra can be classified as dark-humus clayey tropical soils (Skeletic Greyzemic Umbrisols (Clayic)). Very poor soils developed from the eluvium of argillites are classified as thin weakly developed clayey tropical soils (Dystric Regosols (Clayic)). The soils forming from the alluvial sediments of different textures are classified as alluvial loamy sandy soils (Dystric Fluvisols (Arenic, Drainic)) and as alluvial clay loamy soils (Eutric Fluvisols (Episiltic, Endoclayic)). |
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