Plants in Ban Sap Phongphot Community Forest, Soeng Sang District, Nakhon Ratchasima Province

Abstract

Plant study in Ban Sap phongphot community forest, Soeng Sang District, Nakhon Ratchasima Province was conducted between December 2018 and November 2019. Fourteen sampling plots of 20×20 meters were used. Studied plants were divided into 2 groups, i.e., tree and understory plant. The result showed 34 families, 63 genera, and 70 species of trees. The highest important value index of tree was 50.1685 in Shorea obtusa Wall. ex Blume, followed by 31.9030 and 27.8697 in Dipterocarpus obtusifolius Teijsm. ex Miq. and Shorea siamensis Miq., respectively. There were 40 families, 66 genera, and 69 species of understory plants. The highest important value index was 32.2880 in Vietnamosasa pusilla (A. Chev. & A. Camus) T. Q. Nguyen, followed by 29.0962 and 13.0067 in Selaginella and Barleria strigose Willd., respectively. Species diversity index of trees and understory plants was 2.7893 and 2.6588, evenness values were 0.6565 and 0.6279, and diversity values were 16.2703 and 14.2786. There is 1 rare species in Thailand; Gardenia sootepensis Hutch. 3 species are rare; Dillenia ovata Wall. ex Hook. f. & Thomson, Millettia brandisiana Kurz and Scleropyrum pentandrum (Dennst.) Mabb. Additionally one species is vulnerable; Cycas siamensis Miq.