COMPOSITION AND STRUCTURE OF VEGETATION AT TREE LEVEL IN SIGALUIK FOREST, RANTIH TOURISM AREA, SAWAHLUNTO

Amanda, Rahmiati (2024) COMPOSITION AND STRUCTURE OF VEGETATION AT TREE LEVEL IN SIGALUIK FOREST, RANTIH TOURISM AREA, SAWAHLUNTO. Diploma thesis, Universitas Andalas.

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Abstract

The Rantih Tourism Area is a natural tourist park that is included in the conservation area for nature preservation, mainly used for tourism and natural recreation purposes. Rantih Village is located in Talawi sub-district which is 12 km from the center of Sawahlunto city. This village has hilly topography which is crossed by the Batang Ombilin River. The purpose of this research is to determine the composition and structure of tree-level plant vegetation in the Sigaluik Forest. This research was carried out from September to December 2023 using the plotless method (Point Centered Quarter). There were 25 sampling points arranged systematically. Identification was carried out at the Andalas University Herbarium. Based on the research results, 18 families, 25 genera, 37 species, and 100 individuals were found. The co-dominant family is Lauraceae. The highest important value index was Buchanania sessifolia 17.56% and the lowest was Archidendron jiringa and Knema laurina with a value of 2.85%. The plant diversity index in this area is categorized as high (H'=3.52). There are 19 plant species that are included in the conservation status category Union for the Conservation of Nature and Natural Resources (IUCN) Red List with 16 species categorized as low risk (Least Concern) and 3 species that are categorized as vulnerable.

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