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Marqfirokh, Ramadhana
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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Tree and Sapling Level Vegetation Analysis in the Social Forestry Area of Nagari Sumpur Kudus, Sijunjung Regency Marqfirokh, Ramadhana; Chairul
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i1.8534

Abstract

This research was conducted in the Social Forestry Area of Nagari Sumpur Kudus, from May to October 2023. The reseacrh on this study airns to determine the composition and structure of tree and sapling vegetation in the Social Forestry Area of Nagari Sumpur Kudus, Sijunjung Regency. The method used in this study was a 120-meter transect line with 12 plots. In the plot, sub-plots were made with a size of 10 m x 10 m for the tree level and 5 m x 5 m for the sapling level. The results showed that there were 14 families, 14 genus, 14 species, and 19 individuals at the tree level. The co-dominant families, namely the Cornaceae, Euphorbiaceae, Phyllanthaceae and Ulmaceae. The compotition of sapling level was founds 17 families, 29 genus, 36 species, and 40 individuals. The co-dominant families are in the Phyllanthaceae and Euphorbiaceae. The highest importance index at the tree level was found in the Alangium sp. and the lowest was found in the Dipterocarpus confertus. the highest importance index for sapling level was found in the Cephalomappa malolpticarpa and the lowest was found in the Bischofia javanica and Nephelium cuspidatum. The diversity index (H') for tree-level plants is classified as medium and (H') for sapling-level plants is high.
Composition and Structure in the Social Forestry Area Protected Forest Nagari Manganti Kecamatan Sumpur Kudus, Kabupaten Sijunjung Marqfirokh, Ramadhana; Chairul, Chairul; Mukhtar, Erizal
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i1.11169

Abstract

The Social Forestry Area of the Nagari Manganti Protected Forest exhibits high vegetation diversity and the information on vegetation structure in this area remains limited. This study aims to analyze vegetation composition and structure across different growth stages, namely trees, saplings, and understory vegetation, as a scientific basis for sustainable forest management and conservation strategies. The research applied a purposive sampling method, with sample plots systematically established along transect lines. Data for tree and sapling strata were collected using non-destructive sampling methods, while understory vegetation and litter were obtained through destructive sampling. The results indicate that in the tree stratum, Rubiaceae was the dominant family, accounting for 14% of the total composition, consisting of two genera, two species, and six individuals, with Neonauclea sp. exhibiting the highest Important Value Index (IVI) at 26.84%. In the sapling stratum, Rubiaceae, Lauraceae, and Euphorbiaceae functioned as co-dominant families, contributing 18%, 13%, and 10% of the composition, respectively, with Litsea sp. recording the highest IVI at 22%. In the understory stratum, Rubiaceae was the most dominant family (36%), followed by Sapotaceae (11%) and Myrtaceae (10%), while Saraca sp. showed the highest IVI at 40.7%. Therefore, efforts to protect large-diameter trees need to be prioritized  because they play an important role in carbon storage and ecosystem stability. They also maintain dominant species and are used in vegetation rehabilitation and enrichment activities, especially in landslide-prone areas and riverbanks.
Co-Authors Chairul Chairul Chairul Erizal Mukhtar