Comparison of Trees Diversity and Local Utilization among Yang Choom Forest and Rahan Forest, Mueang Surin District, Surin Province

Abstract

The comparison of trees diversityand local utilization,this studyto know of trees diversity, important value index of species and family, species diversity, percentage of similarity andlocal utilization of trees among Yang choom forest and Rahan forest. The results showed that, Yang choom forest had 434 plants which were identified into 39 species and 21 families. The 5 first Important value index of tree species are Kluai noi, Krabak, Krai, Phok and Pha with IVI equal 49.30, 38.73, 32.37, 28.21 and 21.62 respectively and diversity index were 2.78. Rahan forest had 536 plants which were identified into 41 species and 24 families. The 5 first important value index of tree species are Yang hiang, Lam duan, Pha yom, Teng and Phok with IVI equal 43.02, 39.03, 35.42, 30.46 and 23.37 respectively and diversity index were 2.87. The both forest are similar of the first 3 dominant families based on the important value index were Dipterocarpaceae, Annonaceae and Fabaceae and the community similarity index were 36.16% with 24 species of the same kind of the total 56 species. All species are used for local utilization; the highestof local utilization are herbs followed by foods, build a house, residential building, agricultural tools, home appliances, dyeing plants, fuels, other and ornamental plants respectively. These two forest also contribute to the farmland of the surrounding community, absorbs rain water as nature intended, the surrounding agricultural areas and soil in the area is humidity and there is a water source in the forest community are available throughout the year, positive impact on the community's agricultural areas.