Struktur dan Komposisi Vegetasi Hutan Desa Parsingguran I Kecamatan Pollung Kabupaten Humbang Hasundutan

Abstract

Indonesia is recognized as a center of flora and fauna diversity because its location is in the tropical forest. Forests play an important role in balancing the ecosystem. Forest vegetation analysis is a study aimed at understanding the forest structure and composition. One important forest area is the pine forest in Parsingguran Village, managed by Dolok Sanggul Forest Management Unit. The objective of this research is to determine the species structure and composition of the Parsingguran Forest, Pollung, Humbang Hasundutan. This research was conducted from June 2023 to August 2023 in Parsingguran I, Pollung, Humbang Hasundutan, North Sumatra. The tools and materials used were machetes, raffia ropes, timestamp cameras, phiban, haga hypsometers, laptops, and tally sheets. Data collection was conducted using a combination of the line transect and grid methods. In the Parsingguran Protected Forest area, the highest species richness index was found at the tree level, with a value of 0.52. The lowest species richness index value was found at the seedling level, at 0.15. Species diversity in the Parsingguran Protected Forest was classified as moderate, with a diversity index value of 2.09. Species evenness in this area was classified as moderate, with an evenness value of 0.54. Species richness in the Parsingguran Protected Forest was classified as low, with a value of 1.29. There is a plot with low density located on path 4, plot 30. Meanwhile, moderate density is found on path 2, plot 9, and plots with high density located on path 2, plot 19