Properties of Tin-Mined Land in Mangrove Forest, Thailand

by Apisit Eiumnoh, Asian Inst of Technology, Bangkok, Thail,

Document Type: Proceeding Paper

Part of: Coastal Zone '87


Although mangrove forests occupy a very small area of Thailand, they contribute not only an ecosystem but also large tin ore deposits. Two provinces in the South, Ranong and Phangnga, were selected for this study in which remote sensing data, including Landsat MSS imagery and aerial photographs were visually analysed to identify and select tin-mined land. Physical and chemical analyses of virgin and tin-mined soils in mangrove forests were performed to support the results of Landsat imagery and aerial photograph interpretations. Several of the tin-mined lands are no longer inundated by sea water, or slightly undulating topography or heavy-clayey texture and cracks when dry. Reclamation of these mined lands is proposed. The objectives of this presentation are to identify the tin-mined lands in the mangrove forest areas of Ranong and Phangnga provinces by remote sensing techniques; to characterize the virgin and tin-mined lands in terms of soil properties, and to discuss the effects of mining processes and the environmental reclamation.

Subject Headings: Forests | Developing countries | Aerial photography | Imaging techniques | Soil analysis | Soil surveys | Land surveys | Land reclamation | Thailand | Asia

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