Keanekaragaman Hayati Tumbuhan di Areal PBPH PT. Ekosistem Wana Lestari I, Kabupaten Pulang Pisau dan Katingan, Provinsi Kalimantan Tengah

Forest Utilization Business Licensing (FUBL) of PT. Ekosistem Wana Lestari I (PT. EWL I) located in Pulang Pisau and Katingan Regencies, Central Kalimantan Province. The certainty of the existence of plant biodiversity in the FUBL area of PT. EWL I, especially the protected and rare ones, is not yet known. Therefore, research on plant biodiversity in the area needs to be conducted. This study aims to identify habitat conditions and plant biodiversity in the FUBL area of PT. EWL I, Pulang Pisau and Katingan Regencies, Central Kalimantan Province. The richness of plant species found in the FUBL area of PT. EWL I is 36 species which can be grouped into 17 families. The type of ecosystem with the highest species diversity index is in secondary swamp forest land cover, while the lowest is in shrub land cover. The dominant plant types in tree habitus in secondary swamp forest and shrub areas are as follows: trees, poles, stakes and seedlings are dominated by Galam (Melaleuca leucadendron (L.) L.); on the land cover of the Shrubs are trees dominated by Plantan (Alstonia pneumatophora Back.); while poles, stakes and seedlings are dominated by Galam (Melaleuca leucadendron (L.) L.). The types of plants with the highest density in tree habitus in the secondary swamp forest area are as follows: trees, poles, stakes and seedlings are dominated by Galam (Melaleuca leucadendron (L.) L.); on the land cover of the shrubs are trees are Plantan (Alstonia pneumatophora Back.); while poles, stakes and seedlings are dominated by Galam (Melaleuca leucadendron (L.) L.). Based on the results of the flora inventory, it shows that the number of species at the highest growth level of trees, poles, stakes, and seedlings is found in the secondary swamp forest. Based on its protection status, in the FUBL area of PT. EWL I, no protected plant species were found according to the Regulation of the Minister of Environment and Forestry No. P.106 of 2018; However, two plants were found which were included in the CITES Appendix II list, and 5 types of plants were found which were included in the VU/Vulnerable category.