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ANALISIS KOMPOSISI PERMUDAAN MENGGUNAKAN METODE ANALISIS SUM OF DOMUNANCE RATIO (SDR3) DI HUTAN LINDUNG GUNUNG KERAMAIAN DESA UJUNG BATU KECAMATAN PELAIHARI KABUPATEN TANAH LAUT Rahadi, Muhammad Alwi; Rudy, Gusti Syeransyah; Peran, Setia Budi
Jurnal Sylva Scienteae Vol 7, No 6 (2024): Jurnal Sylva Scienteae Vol 7 No 6 Edisi Desember 2024
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jss.v7i6.9290

Abstract

ABSTRACT. The problem that is often found in forests is the lack of research on species composition which of course will have an unfavorable impact, especially youth composition. Rejuvenation data analysis will be more accurate if you use the Sum of Dominance Ratio (SDR3) method with 3 parameters namely Frequency, Density and Height. This study aims to serve as a comparison and evaluation material for research that has been carried out previously in the protected forest area of Mount Keramaian regarding rejuvenation. The objects used are vegetation at the level of seedlings and saplings. The plot used was the grid path method with a size of 5 m × 150 m. Created as many as 2 lines drawn perpendicular to cut the contours of the mountain slopes to the top or vice versa. On the transect line, 15 observation plots were made. All samples included in the plot are recorded with the name of the species and the total height, then the observed data is calculated to find out the important value. There are 38 types of vegetation found at each growth stage, but not all types are present at each growth stage. The type that dominates the growth rate of the seedlings is mali-mali with a value of 79.68%. The species that dominates at the sapling level is mahang sapat with a value of 88.47%. The species diversity index in the Mount Keramaian protected forest was 2.731 seedlings and 2.699 saplings. The species evenness index in the Mount Keramaian protected forest was 0.820 seedlings and 0.759 saplings. ABSTRAK. Permasalahan yang sering terdapat pada hutan yaitu minimnya penelitian mengenai komposisi jenis yang tentunya akan berdampak kurang baik khususnya komposisi permudaan. Analisis data permudaan akan lebih akurat jika menggunakan metode Sum of Dominance Ratio (SDR3) dengan 3 parameter yaitu Frekuensi, Kerapatan dan Tinggi. Penelitian ini bertujuan sebagai bahan perbandingan dan bahan evaluasi penelitian yang sudah dilakukan sebelumnya pada kawasan hutan lindung Gunung Keramaian mengenai permudaan. Objek yang digunakan yaitu vegetasi tingkat semai dan pancang. Plot yang digunakan dengan metode jalur berpetak dengan ukuran 5 m × 150 m. Dibuat sebanyak 2 jalur ditarik tegak lurus memotong kontur dari lereng gunung menuju puncak atau sebaliknya. Pada jalur transek dibuat 15 petak pengamatan. Semua sampel yang termasuk dalam plot di catat nama jenis serta tinggi total kemudian dilakukan perhitungan data hasil pengamatan untuk mengetahui nilai penting. Terdapat 38 jenis vegetasi yang ditemukan pada setiap tingkat pertumbuhan, namun tidak semua jenis hadir pada setiap tingkat pertumbuhan. Jenis yang mendominansi pada tingkat pertumbuhan semai yaitu mali-mali dengan nilai 79,68%. Jenis yang mendominansi pada tingkatan pancang yaitu jenis mahang sapat dengan nilai 88,47%. Indeks keanekaragaman jenis di hutan lindung gunung Keramaian yaitu semai 2,731 dan pancang 2,699.Indeks kemerataan jenis di hutan lindung gunung Keramaian yaitu semai 0,820 dan pancang sebesar 0,759.
A comparison of soil characteristics from four land covers around a coal mining concession area in South Kalimantan Nugroho, Yusanto; Suyanto, Suyanto; Rudy, Gusti Syeransyah; Supandi, Supandi; Saputra, Yudha Hardiyanto Eka; Alam, Syamsu; Matatula, Jeriels; Wirabuana, Pandu Yudha Adi Putra
Journal of Degraded and Mining Lands Management Vol. 10 No. 1 (2022)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2022.101.3883

Abstract

Understanding soil characteristics is important to determine the alternative strategies of land management, particularly those related to the scheme of soil and water conservation. This study investigated soil characteristics from four land covers around the coal mining concession area located in South Kalimantan. A soil survey was conducted using a purposive sampling method with three replicates in each land cover. Soil samples that were taken at depths of 0-10 cm, 11-20 cm, and 21-30 cm, were composited before being brought to the laboratory to quantify their characteristics, such as texture and organic carbon content. Data analysis was processed using a non-parametric test with a significant level of 5%. Comparison average of soil characteristics between land covers was evaluated using the Kruskal-Wallis test and followed by Nemenyi-test. Results found that soil characteristics from four land covers significantly differed in texture and organic carbon content. The highest sand fraction was noted in shrubs (67.23±0.86%), while the greatest silt fraction was recorded in plantation forests (29.71±2.84%). Compared to other land covers, the clay content in plantation forests and reclamation area was relatively equal by around 53-54%. On another side, The highest soil organic carbon was found in plantation forests with ranging of (4.44±0.14%) followed by natural forests (4.24±0.62%), shrubs (3.38±0.09%), and reclamation area (1.14±0.09%). These findings indicated there were high variations of soil characteristics from different land covers around the coal mining concession area. Therefore, it is recommended for managers to apply adaptive strategies in supporting soil conservation efforts based on the soil characteristics in each site.
The influence of land cover variation on soil erosion vulnerability around coal mining concession areas in South Borneo Supandi, Supandi; Saputra, Yudha Hardiyanto Eka; Nugroho, Yusanto; Suyanto, Suyanto; Rudy, Gusti Syeransyah; Wirabuana, Pandu Yudha Adi Putra
Journal of Degraded and Mining Lands Management Vol. 10 No. 2 (2023)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2023.102.4289

Abstract

The availability of information about soil erosion vulnerability is necessary as a primary consideration to determine the effort of soil conservation, particularly in the coal mining area. This study aimed to estimate the potential risk of soil erosion from land cover variation in a coal mining concession site in South Borneo. Data were taken from 18 stations of soil erosion monitoring which were evenly distributed in each land cover. Soil erosion vulnerability was quantified using the Universal Soil Loss Equation (USLE) method. The comparison mean of soil erosion among land cover types was evaluated using the Kruskal-Wallis test and followed by the Nemenyi test with a significant level of 5%. Results found that the potential risk of soil erosion was significantly different among land covers (p<0.05). The highest soil erosion vulnerability was noted in the reclamation area of 1,012.3 t ha-1 year-1, while the lowest risk of soil erosion was observed in plantation forests of 47.9 t ha-1 year-1. Surprisingly, the potential risk of soil erosion in natural forests was four times higher than in oil palm plantations. Besides being located in hilly areas with high slope levels, the vegetation density in natural forests was relatively low. However, our study recorded there were two critical factors that highly correlated to soil erosion vulnerability, i.e., soil erodibility (R = 0.89; p<0.05) and slope length and steepness (R = 0.85; p<0.05).