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Floristic Composition, Structure and Soil Properties of mixed deciduous forest and deciduous Dipterocarp forest: Case Study in Madan Watershed, Myanmar

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American Journal of Plant Sciences 2016年第2期7卷 279-287页

作者： Kyaw Kyaw Myo San Thwin Nyunt Khaing forest Department Head Office of Ministry of Environmental Conservation and Forestry Nay Pyi Taw Myanmar Department of forestry University of Forestry Yezin Nay Pyi Taw Myanmar

Patterns of woody regeneration in terms of species composition and diversity were studied in mixed deciduous forest (MDF) and deciduous dipterocarp forest (DDF) in Minbyin reserved forest of Lewe Township. A total of 57 plant species of MDF belonging to 28 families and 342 individuals and 25 plant species of DDF consist of 15 families and 285 individuals were identified. Plant species diversity was quantitatively higher in the MDF (H' = 3.68) compared to the DDF (H' = 2.39). Tectona grandis showed the highest density (30), dominance (4.40 m2) and IVI (27.01) of MDF and Dipterocarpus tuberculatus also composed the highest density (109), dominance (9.02 m2) and IVI (81.87) in DDF. The smallest diameter class (10 - 20 cm) comprised with 29 species, 103 individuals in MDF and 18 species, 85 individuals in DDF. The size class distribution displayed a reverse J-shaped pattern. The largest numbers of species were concentrated in the smallest height class in both investigated forests because of height and diameter distribution is closely related. The total densities of seedlings and saplings were 1219 and 531 ha-1 in MDF and 988 and 444 ha-1 in DDF respectively. Although soil texture of (40 - 50 cm) and (90 - 100 cm) were sandy clay loam in mixed deciduous forest, the other layers of both investigated forests were sandy loam.

关键词： Floristic Composition and Structure mixed deciduous forest deciduous Dipterocarp forest Regeneration Soil Properties

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