Diversity and Evenness of MangroveTrees in Thasala, Sichon and Pakpaneang District, Nakhon Si Thammarat Province, Thailand
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Abstract
Diversity and evenness of mangrove trees in Thasala, Sichon and Pakpaneang district, Nakhon Si Thammarat province, Thailand were studied of mangrove trees in each district was conducted from December, 2016 to June, 2017. The surveying used the Line Transect method in the scope of area 50 x 200 meters for each district (station). The result showed that the diversity and evenness of mangrove trees in Thasala, Sichon and Pakpaneang district were found 29 species and 18 families. The most abundance are Avicennia alba BL (31.05%), Bruguiera cylindrical L. (27.12%) and Rhizophora apiculataBlume (9.30%), respectively. The kind of mangrove trees in Thasala, Sichon and Pakpaneang district, Nakhon Si Thammarat’s coastline. The most abundance were founded 16 species and 6 families of trees, it is the highest number of total mangrove trees in this experiment is 3088 (78.28 percent). The second abundance were founded 4 species and 4 families of ground cover , it had the number of total ground cover from this experiment is 557 (14.12 percent), The third abundance were founded 8 species and 7 families of shrub , it had the number of total shrub in this experiment is 288 (7.30 percent), The less abundance was founded 1 species and 1 families of climbing, it had the number of total climbing from this experiment is 12 (0.30 percent). The diversity indices of this study were shown in Thasala, Pakpaneang and Sichon district are 0.67 0.45 and 0.47, respectively. The evenness indices of this study was shown in Thasala, Sichon and Pakpaneang district are 0.14 0.13 and 0.11, respectively.
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