Comparing Plant Species Diversity in Different Altitudinal Zones of Bolikhamxay Province, Central Lao PDR

Pan Noymany, Anoulom Vilayphone, Viengsamone Thammavong, Soukkongseng Saingaleuth and Houngphet Chanthavong

International Journal of Sciences, 2018, vol. 7, issue 05, 64-76

Abstract: The paper aims to examine plant species diversity, density, and distribution in different altitudinal zones of Bolikhamxay Province, Central Lao PDR. We conducted an inventory to collect the data from a total of 10 sampling plots from five villages of four districts of Bolikhamxay Province situated at different geographical locations with different above mean sea level. The analysis revealed that the Shannon diversity index was diverse in all sites. We found approximately 55 plant species with circumference of greater than 94 cm in the sampling plot 40x40m and 43 plant species with circumference of 32-93 cm in the sampling plot 20x20 m. We also found 40 different plant species in the sampling plot 10x10m when tree species has circumference of 4-31 cm. In small sampling plots 2x2m, we found 43 plant species which are plant species with circumference of less than 3 cm (height of 0.3-1.5m) and non-timber forest products (NTFPs). Overall, there were high variations in relative density, density, species richness, litter decomposition, and soil hardness in the study area and it can be concluded that the study area has diverse plants species and different geographical habitats of trees.

Date: 2018
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DOI: 10.18483/ijSci.1665

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