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Species Composition and Stand Structure of Primary and Secondary Moist Evergreen Forests in the Tanintharyi Nature Reserve (TNR) Buffer Zone, Myanmar

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Document pages: 15 pages

Abstract: The habitat structure and floristic composition examined for this study are of great importance,providing a scientific baseline of information for developing a biodiversitydatabase and in supporting crucial information for the managementdecision-making process of the buffer zones. The primary objective of thisstudy was to examine the current status of species composition and standstructure of moist evergreen forests distributed in the TNR buffer zone. Forestinventory was conducted in the primary moist evergreen forest (~1 ha) andsecondary moist evergreen forest (~1 ha). In the TNR buffer zone, 83 speciesbelonging to 31 families in the primary moist evergreen forest and 86 speciesbelonging to 32 families in the secondary moist evergreen forest were found.The most dominant families in the primary moist evergreen forest were Dipterocarpaceae,Sapindaceae, Meliaceae, Myrtaceae, and Myristicaceae; at species level; this forest was composedof Nephelium lappaceum, Myristica malabarica, Nephelium laurium, Aglaia andamanica,and Diospyros peregrine.The most dominant families in the secondary moist evergreen forest wereMyrtaceae, Sapindaceae, Euphorbiaceae, Myristicaceae, and Lauraceae, while Nephelium lappaceum, Syzygium claviflorum, Syzygium sp-1, Eugenia oblate, and Myristica angustifolia were the mostdominant at the species level. The results of S?rensen’s similarity index basedon common species (Ks) and the similarity index based on species dominance (Kd)were observed at about 55 and 75 between the primary and secondary moistevergreen forests. The basal area (51.39 m2.ha-1) ofthe primary moist evergreen forest was higher than that (44.50 m2.ha-1) ofthe secondary moist evergreen forest. Between these two forest types, theShannon-Wiener, the Simpson and the Evenness indices were not significantlydifferent at (p ere 910 (±184) and 991 (±183). ?

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