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Research area: Thailand

Research Sites in Northern Thailand: Bor Krai, Huai Bong, Mae Sa  Mai

Soils of NW-Thailand: (a) Major Soils: Acrisols, AlisolsCambisols; (b) Minor Soils: Anthrosols, Ferralsols, Fluvisols, Gleysols, Leptsols, Luvisols, Plinthosols, Regosols, Technosols, Umbrisols; (c) Exotic Soils: Chernozems, Histosols, Stagnosols, Vertisols

Luvisols - Soils of NW-Thailand

In NW-Thailand, Luvisols occur mainly on intermediate to ultrabasic igneous rocks. Exceptional occurrences were found at lower slope position below the outlets of carbonate rich seepage water. Luvisols on igneous rocks have commonly high clay contents, with crumb to subangular blocky structure in the topsoil, and angular blocky to prismatic structure in the subsoil (Argic horizon). Luvisols are more fertile than Alisols and Acrisols. These soils are mostly used for maize and upland rice production.   

Profiles of Luvisols on latite (left) and claystone (right).
  





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copyright Ulrich Schuler 2008-2010