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Changes in Soil Physical Quality of Post-Coal Mining After Revegetation of Eucalyptus Plants (Melaleuca cajuputi) Evira Khairunisa Putri; Bambang Sulistyo; Bandi Hermawan; Vinni Lovita; Esi Asyani Listyowati
TERRA : Journal of Land Restoration Vol. 5 No. 2 (2022)
Publisher : Department of Soil Science, Faculty of Agriculture, University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.5.2.38-44

Abstract

Coal mining in Indonesia is generally carried out by open-pit mines so which impacts the decline of environmental quality degradation and damage to the soil’s physical properties. One of the steps taken by PT Bukit Asam Tbk to solve this problem is to carry out land reclamation by using eucalyptus plants. This study aims to of the revegetation age of eucalyptus plants on changes in the soil’s physical properties of post-coal mines. This research was carried out from October to December 2021 on post-coal mining land after the revegetation of eucalyptus plants for 3 years, 5 years, and 10 years in Pit Banko Barat, PT Bukit Asam Tbk. At the research location measurements and sampling were taken and followed by analysis at the Soil Science Laboratory, Bengkulu University. The data obtained were analyzed by descriptive statistics and normality test then continued analysis of variance and BNT test. The results showed that the age of eucalyptus plants has a significant effect and can improve soil density and root penetration at the age 5 and 10 years in post-coal mining land. The soil’s physical quality showed that soil bulk density, particle density, liquid limit, root penetration, groundwater level, as well as increased porosity and C-organic. It has the same texture that is clay and some changes in the blocky structure to be granular.
Hydrological function of rewetted peatlands linked to saturated hydraulic conductivity in Kubu Raya, West Kalimantan, Indonesia Mahardika, Rabbirl Yarham; Tarigan, Suria Darma; Baskoro, Dwi Putro Tejo; Lovita, Vinni; Gangga, Adi; Asyhari, Adibtya; Fatoni, Arif; Jepri, Kristoporus; Ravelle, Adzan Pandu
Journal of Degraded and Mining Lands Management Vol. 11 No. 3 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.113.5717

Abstract

The hydrological function of peatlands, one of which is acting as a medium for storing and releasing water, undergoes alteration due to degradation. Saturated hydraulic conductivity (Ks) is a pivotal parameter for comprehending the hydraulic properties of peatlands. Ks plays a crucial role in the transmission and release of water influenced by other peat properties. This research examined the impact of Ks and selected peat properties, namely bulk density and available water content, to depict the hydrological function in rewetted peatlands. The study sites are rubber plantation (RB), oil palm plantation (OP), and drained secondary forest (SF). Results revealed a significantly higher Ks in OP (106.7 cm hr-1) compared to RB (19.56 cm hr-1) and DSF (15.1 cm hr-1). The hydrological function at all study sites was categorized as high, with minor degradation in OP and moderate degradation in RB and SF. Nonetheless, these findings necessitate fundamental interpretation and adjustment. The outcomes of this study can be utilized to prioritize rewetting efforts in the study sites, emphasizing the importance of prioritizing immature peat (fibric) with high Ks.
Conservation strategy based on soil erodibility with several land covers and slopes in the upstream of Air Bengkulu Watershed Lovita, Vinni; Sulistyo, Bambang
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 14 No. 1 (2025): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.14.1.2025.731

Abstract

Global land cover changes driven by increasing demand for agricultural, residential, and industrial land have caused various environmental issues, including soil erosion. The study aimed to analyze soil erodibility values upstream of the Air Bengkulu watershed based on land cover and slope factors. The analysis was conducted using soil samples obtained through purposive sampling based on soil map units, topography, and land cover. Soil erodibility values were determined through laboratory analysis of organic matter, texture, structure, and soil permeability, followed by calculating erodibility. After obtaining the distribution of erodibility values, the next step involves identifying erodibility values based on slope and land cover to analyze the interaction between slope and land cover on erodibility values. Conservation recommendations are provided based on slope, land cover and consideration of community aspects to reduce erodibility values and minimize erosion risk. Results indicate that soil erodibility in the Air Bengkulu watershed ranges from very low to very high, with most areas classified as low. The findings suggest that soil erodibility values vary depending on land cover and slope. Higher erodibility values were observed in areas with minimal land cover, especially in mining and cultivated land with poor management practices. In contrast, dense vegetation such as forests and well-maintained plantations significantly reduced soil erodibility values. The interaction between slope and land cover plays a crucial role in determining soil susceptibility to erosion risk. Vegetative and mechanical conservation strategies are suggested to mitigate erosion risks, improve land productivity, and support ecosystem sustainability in the region.
Evaluation of Land Suitability and Potential Development of Cardamom (Amomum compactum L.) in Padang Jaya Subdistrict, North Bengkulu Regency Faisal, Muhammad; Sulistyo, Bambang; Hindarto, Kanang Setyo; Lovita, Vinni
TERRA : Journal of Land Restoration Vol. 8 No. 1 (2025)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.8.1.10-19

Abstract

Cardamom (Amomum compactum) is a high-value spice with significant applications in the pharmaceutical, food, and cosmetics industries. The increasing global demand makes cardamom a promising commodity for agricultural expan sion. However, limited information on land suitability in Padang Jaya Subdistrict poses a challenge to optimizing cultivation. This study aimed to map the land suitability classes for cardamom cultivation and assess the potential for cardamom development in Padang Jaya Subdistrict, North Bengkulu. The research involved in field surveys, soil sampling, laboratory analysis, and GIS-based land suitability evaluation using the FAO framework. Key parameters as sessed included rooting media, nutrient retention, slope, and climate condition in the past 10 years. The FAO classification system categorized land into four suitability classes, namely: S1 (high suitable), S2 (moderately suitable), S3 (marginally suitable), and N (not suitable). The result indicate the actual land suitability is predominantly S3nrnaeh and S2nrnaeh, with major limiting factors including rooting media, nutrient retention, nutrient availability, and slope. Land improvement efforts such as liming, organic matter applications, fertilization, and soil conservation techniques led to an increase in land suitability, with 62.3% of S3 land upgraded to S2 and 37.7% of S2 land reached S1. Furthermore, GIS-based analysis identified four land cover types suitable for extensification: mixed gardens, seasonal crops, plantations, and bare land, totaling 8,747.71 hectares. These findings provide valuable insights for optimizing land use planning, improving productivity, and promoting sustainable agricultural development. Integrating GIS and remote sensing in future studies could enhance land suitability assessments with a more refined spatial scale. The results also serve as a scientific reference for policymakers and farmers in designing sustainable land management strategies and minimizing environmental degradation.