| Summary: | Sucession of natural vegetation at various seral-stages were studied in post tin-mining Bangka Island. These seral stages were 2 months of overburden, 1 year of tailing, 1 year of subsoil, 3 years of tailing, 10 years of overburden, 10 years of tailing, 20 years of overburden, and 20 years of tailing and were compared to the natural forest. Data were collected based on various growthforms using various quadrate plots of 2mx4m, 5mx5m, and 10mx20m, which replicated of 3 to 15 plots. The result showed that the number of growthforms of sere was found more at location of overburden more than the tailing. The dominant plants at pioneer stage were Ischaemum muticum and Imperata cylindrica. The next seral stage was dominated by shrubs of Melastoma malabathricum. We also found Leguminosae and Nepenthes sp, which indicated that the location of post mining were poor in nutrients. The tree seedlings were dispersed rarely, and consisted of Macaranga sp, Melaleuca leucadendron, Schima wallichii, Vitex pubescens, Anacardium occidentale, and Alstonia schoolaris. The present of vegetation during the seral stages were as a respon to the nutrient content especially organic matter and nitrate. On location 10 years and 20 years of overburden, and also 20 years of tailing were found introduce spesies of Acacia spp. Trees of Dyera costulata were found on natural forest, which were indicated that forest was peat swamp forest. The natural forest were dominated by trees and saplings of Eugenia palembanica and seedlings of Eugenia longiflora, but their soils textures were similar with all locations of post mining sere.
Keywords: natural succession, tin mining, vegetation, overburden, tailing, nutrient content.
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