Structure and diversity in a permanent plot of Melaleuca forest in rayong botanical garden, Thailand

Janjira Muenrew; Prateep Panyadee

doi:10.14456/nujst.2021.17

Authors

Janjira Muenrew Queen Sirikit Botanic Garden, P.O. Box 7, Mae Rim, Chiang Mai 50180, Thailand
Prateep Panyadee Queen Sirikit Botanic Garden, P.O. Box 7, Mae Rim, Chiang Mai 50180, Thailand

DOI:

https://doi.org/10.14456/nujst.2021.17

Keywords:

Structural, Diversity, Melaleuca forest, Rayong botanical garden, Swamp forest, Melaleuca cajuputi

Abstract

The aim of the study has been to describe the structural and floristic diversity of Melaleuca forest were studied over a 5-yr period at rayong botanical garden, Thailand. Methods structural (stem density, basal area) and floristic characteristics (composition, species diversity and morality rate). All trees > 14 cm DBH in a permanent plot of 100 m × 100 m (1 ha) were censured, in 2016 and 2020. Results, total of 2 trees (DBH ≥14 cm), 115 trees (DBH ≥14-30cm), 18 trees (DBH ≥30-50cm), 358 trees (DBH ≥50-100 cm) and 634 trees (DBH ≥100 cm) belonging to 4 species. The interval 5 years, there was a change of density, basal area and IVI. The species with the highest IVI value are Melaleuca quinquenervia (Cav.) S.T. Blake. (294.18=98.06 %) and diversity indices of Shannon-wiener index increased in 2020 (0.18). The forest structure consists of a two story tree layer and the top canopy height of 10 meters and means annual increment of 4.26 % per year. The soil characteristics are loam, sandy loam mixed with silt loam and strongly acid soils (pH 5.14).

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