Analisis Vegetasi dan Asosiasi Bunga Bangkai (Amorphophallus sp.) di Desa Tarlola dan Desa Rao-Rao, Kecamatan Batang Natal, Kabupaten Mandailing Natal

Abstract

Amorphophallus is a genus of Araceae which has 170 species spread throughout the world, 25 species grow in Indonesia and 18 species are endemic. The Amorphophallus sp. habitat study was carried out using the Nested method with a plot area of 1 Ha and a square shape taken from the Amorphophallus sp. plot. The data taken is regional vegetation which includes tree vegetation calculated on 1 ha plots, pole vegetation on 0.25 ha plots, sapling vegetation on 0.0625 ha plots, and seedling and understory vegetation calculated on 0.01 ha plots. ha. In Tarlola Village, 30 Amorphophallus sp. individuals were found , while in Rao-Rao Village, 23 Amorphophallus sp. individuals were found . In Tarlola Village, the highest INP was at the understory level with the species Selaginella deoderleinii at 57.39%. Then in Rao-rao INP Village the highest seedling rate was for the Coffea canephora species with a value of 120.40%. In Tarlola Village, namely at the lower plant level there are 13 species with positive associations and 15 species with negative associations, at the seedling level there are 12 species with positive associations and 14 species with negative associations, at the sapling level there are 12 species with positive associations and 19 species with negative associations, at the pole level there are 9 species with associations. positive and 15 negatively associated species, at tree level there are 14 positively associated species and 9 negatively associated species. Then in Rao-Rao Village, at the understory level there are 9 species with positive associations and 11 species with negative associations, at the seedling level there are 6 species with positive associations and 6 species with negative associations, at the sapling level there are 9 species with positive associations and 13 species with negative associations, at the pole level there are 5 species were positively associated and 17 species were negatively associated, and at tree level there were 9 positively associated species and 15 negatively associated species.