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Journal of Degraded and Mining Lands Management
Published by Universitas Brawijaya
ISSN : 2339076X     EISSN : 25022458     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Journal of Degraded and Mining Lands Management is managed by the International Research Centre for the Management of Degraded and Mining Lands (IRC-MEDMIND), research collaboration between Brawijaya University, Mataram University, Massey University, and Institute of Geochemistry, Chinese Academy of Sciences-China Papers dealing with result of original research, and critical reviews on aspects directed to the management of degraded and mining lands covering topography of a landscape, soil and water quality, biogeochemistry, ecosystem structure and function, and environmental, economic, social and health impacts are welcome with no page charge
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Articles 47 Documents
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Search results for , issue "Vol. 13 No. 1 (2026)" : 47 Documents clear
Study of seawater intrusion in the coastal alluvial aquifer, West Semarang, Central Java, Indonesia Fajrianto, Rizq; Wilopo, Wahyu; Pranantya, Pulung Arya; Laowattanabandit, Pipat
Journal of Degraded and Mining Lands Management Vol. 13 No. 1 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.131.9399

Abstract

Seawater intrusion occurs when seawater enters aquifer systems, which happens a lot in coastal areas. The coastal zone of Tugu District, Semarang City, Central Java Province, is one such area where groundwater becomes increasingly vulnerable due to intensified pumping and land-use changes near the shoreline. This study aimed to ascertain the incidence of seawater intrusion in the western coastal region of Semarang and to examine its characteristics and sources using an integrated geological, hydrogeological, geophysical, groundwater geochemical, and stable-isotope analysis approach. A descriptive quantitative method was employed, including the measurement of 59 geological/hydrogeological sites, four geoelectrical soundings, and the acquisition of 14 groundwater samples from wells and springs. The parameters examined encompassed physical properties  (EC, TDS, pH), chemical composition (Cl?, Na?/Cl? ratio, Cl?/SO?²? ratio, Simpson index, and BEX), facies classifications using Piper diagrams, and stable isotope ratios (?¹?O and ?²H). The results showed that several locations, especially along the coast of Mojorejo and Mangkang Wetan Villages, had EC values exceeding 10,000 µS/cm and Cl? concentrations above 4,000 mg/L. Chemical ratios suggested that salinization processes are still active. Piper diagrams indicated that alkali-chloride type predominated in coastal areas. Isotope analysis showed that groundwater and seawater mixed. These findings demonstrated that the effects of intrusion have damaged shallow aquifers in the alluvial region. Managing coastal groundwater requires the stringent implementation of conservation zones, restrictions on borehole extraction, and the use of geoindicators for monitoring. A multidisciplinary approach remains essential for fully understanding seawater-intrusion dynamics in tropical coastal environments.
Sustainable small-scale mining through geological and resource estimation: a holistic, society-centred approach Mahlaule, Ntiyiso Ally; Sengani, Fhatuwani; Rapholo, Maropene Tebello Dina
Journal of Degraded and Mining Lands Management Vol. 13 No. 1 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.131.9505

Abstract

Sustainable small-scale mining (SSM) development presents both challenges and opportunities for stone resource economies. Having been characterised by informality, a lack of technology, and environmental degradation, SSM remains a significant global producer of geological raw materials, including stone resources. However, it often struggles with the appraisal of resources and the classification of reserves. Conventional geological methods, although effective, are not being considered. This study examined the traditional estimation of the contribution of stone techniques to sustainability and resource estimation in small-scale industries. Babanana Greyfield at Meadowbank Farm was selected as a case study area due to its accessibility and the availability of borehole information. Rotary drilling, core logging, and Avanza Solution methods were employed to collect the data necessary for constructing geological maps and cross-sections. Maptek Vulcan Quarry Modeller was also employed for 3-D modelling and estimation of stone resources. Results revealed that these techniques efficiently improved volume calculation, tonnage, resource, and reserve estimation. These traditional techniques have been proven to enhance accuracy, minimise environmental impact, and facilitate strategic planning when applied effectively. Nevertheless, financial and technical constraints persist. The validation of the methods used in the study revealed a 99.99% performance score. Thus, this study is considered highly reliable, as evidenced by the near-total concordance between the predicted and actual volumes, which implies great internal consistency in this study and hence reproducibility. The research suggests that training initiatives should focus on specific requirements, low-technology expenditure, and organisation by agencies such as ASPASA, the Department of Mineral Resources and Energy, and the Council for Geoscience to implement sustainable methods.
Phosphorus adsorption and release dynamics in calcareous soil as affected by humic and fulvic acids Aswad, Aswad H.; Hamid, Mohammed M.; Almeekh, Mohammad Tarkhan Abo; Ajeel, Mohammed R.
Journal of Degraded and Mining Lands Management Vol. 13 No. 1 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.131.9463

Abstract

Humic and fulvic acids play a crucial role in enhancing phosphorus retention in calcareous soils. These organic acids increase phosphorus fixation on soil surfaces, thereby strengthening its binding and modifying its availability in the soil solution. Among the tested treatments, Fulvic Acid at 50 kg ha?¹ (F2) demonstrated the highest adsorption capacity, followed by Humic Acid at 50 kg ha?¹ (H2). Lower doses (H1 at 25 kg ha?¹ and F1 at 25 kg ha?¹) showed adsorption patterns that deviated from the Langmuir model, reflecting heterogeneity in binding sites. Increasing the dose revealed that fulvic acid consistently exhibited greater phosphorus uptake than humic acid. By enhancing both phosphorus storage and supply, fulvic acid improves nutrient use efficiency and supports agricultural productivity. Among the tested isotherm models, Freundlich and Dubinin–Radushkevich provided the best fits, indicating predominantly physical, reversible adsorption mechanisms. These findings suggest that the application of fulvic acid is effective for improving phosphorus retention in soils with similar calcareous properties. Further field trials are recommended to validate these laboratory results under practical agricultural conditions.
Synergistic effects of potassium humate and clay-rich soil on improving the chemical and physical properties of tin tailing Panghingguan, Lambang Praja; Hartono, Arief; Syaiful, Anwar
Journal of Degraded and Mining Lands Management Vol. 13 No. 1 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.131.9455

Abstract

West Bangka Regency, Bangka Belitung Islands Province, is one of Indonesia's main tin-producing areas. Mining activities in this area produce residues in the form of tailings that dominate the post-mining landscape. Tailings are a sand-textured medium with low water retention, unstable aggregate structure, and limited nutrient content. This condition hinders the use of land for ecological reclamation purposes. This experiment examined the effect of the combination of potassium humate and clay-rich soil on improving the quality of tin tailings. The method of experiment was an incubation method, and it was designed in a Completely Randomized Design with two factors. The factors were potassium humate and clay-rich soil.  The rates of potassium humate were 0% 0.50%, 1.00%, 1.50% while the rates of clay-rich soil were 0%, 5.00%, 10.0%, 20.0%. The parameters analyzed were organic Carbon (C), Cation Exchange Capacity (CEC), Water Holding Capacity (WHC), and soil pH.  The results showed that the combination of 1.50 % potassium humate and 20% clay-rich soil was the best treatment for increasing organic C content to 1.50% and CEC to 7.27 cmol(+)/kg. This treatment also increased the WHC to the level 18.8 %. As for soil pH, the treatment of 1.50% potassium humate without the application of clay-rich soil had the highest value, with a value of 8.02.  These findings proved that the integration of potassium humate and clay-rich soils significantly improved the chemical and physical characteristics of tin tailings, thereby increasing their feasibility as a sustainable reclamation medium.
The forest farmers' mindsets contribution to ecosystem degradation in Meru Betiri National Park, Indonesia: towards sustainable conservation through a translation practices approach Ikhsan, Fahrudi Ahwan; Sumarmi, Sumarmi; Utaya, Sugeng; Sugiarto, Agus; Heldayani, Eni
Journal of Degraded and Mining Lands Management Vol. 13 No. 1 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.131.9487

Abstract

Controlling land degradation in conservation areas requires improvement, especially given the spatial impacts of human-environment interactions within the Meru Betiri National Park Biosphere Reserve, Indonesia. Drawing upon geosystem theory, this study investigated land change issues stemming from human-environment interactions within Meru Betiri National Park's conservation area. This study adopted a mixed-methods design that incorporated field observations, surveys, and in-depth interviews. Quantitative data were obtained from observations of the degradation landscape and a survey of forest farmers, while qualitative data were collected through interviews with key observer participants. Data analysis was triangulated through a Forum Group Discussion (FGD) involving forest farmers and policymakers. The findings indicate that forest farmer conservation practices influence knowledge transformation, environmental education, and funding mechanisms. These elements are integral to a sustainable "translation approach" to restore the conservation area's ecological landscape. The impact of ecosystem restoration leads to significant spatial and contextual changes within the biosphere reserve's geosystem landscape. This study highlights the implications of the interplay among farmer thinking patterns, funding, and policies for enhancing welfare through a sustainable critical land conservation model. Applying this "translation approach" offers valuable spatial and temporal conservation insights in protected areas.
The potential of coffee husk biochar for chromium removal from acid mine drainage using constructed wetlands Titania, Opi Mida; Fahruddin, Fahruddin; Latunra, Andi Ilham
Journal of Degraded and Mining Lands Management Vol. 13 No. 1 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.131.9587

Abstract

This study aimed to characterize physicochemical properties of biochar generated from coffee husks and assess its efficacy in the removal of chromium (Cr) from acid mine drainage (AMD) using a constructed wetland system. The biochar was made through pyrolysis and then chemically activated with H?PO? and KOH to enhance its adsorption. Characterization results showed increased surface area and porosity, and that functional groups such –OH, –COOH, and C=O were present, which are good for metal binding. In the experiment, 5 g of biochar (T2) reduced the amount of Cr from 59.53 ppm to 4.47 ppm in 12 days, which was better than other amounts of biochar applied. The study observed significant reductions in sulfate content and improvements in pH. The sulfate levels in T2 went down from 176.78 mg/L to 81.60 mg/L, while the pH increased from below 3 to 6.85. This shows that the acid was neutralized well. These improvements show that biochar not only absorbs contaminants but also lowers the acidity of AMD. The addition of mangrove sediment also enhanced the remediation process by using ion exchange, complexation, and microbial activity, especially from sulfate-reducing bacteria (SRB). The results show that coffee husk biochar, especially when combined with mangrove sediment, is a sustainable and eco-friendly material for treating heavy metal-contaminated acidic wastewater.
Assessment of water erosion risk in the Fergoug watershed in Algeria using a GIS-based RUSLE approach Oualid, Ahmed Tewfik; Hamimed, Abderrahmane; Benamina, Benyekhlef; Miloudi, Kaddour; Benslimane , Mohammed
Journal of Degraded and Mining Lands Management Vol. 13 No. 1 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.131.9531

Abstract

This work evaluated the spatial distribution and severity of water-driven soil erosion in the Fergoug watershed in northwestern Algeria by using the RUSLE model integrated within a Geographic Information System (GIS) framework. The watershed, characterized by steep slopes, erodible marly formations, and semi-arid Mediterranean climatic conditions, is highly vulnerable to land degradation. Five thematic layers corresponding to the RUSLE factors (rainfall erosivity, soil erodibility, slope length and steepness, cover management, and support practices) were produced using long-term rainfall records, a 30 m resolution Digital Elevation Model (DEM), Landsat-8 OLI imagery, and lithological maps. The spatial analysis revealed that rainfall erosivity ranges from 120 to 301 MJ mm ha-1 h-1 yr-1, while soil erodibility ranges from 0.015 to 0.065 t ha h ha-1 MJ-1 mm-1. High LS values are concentrated in the rugged southern and western sectors, whereas low C and P values are associated with forested zones with adequate soil protection. The integration of these parameters indicates an average annual soil loss of approximately 38.5 t ha-1 yr-1, with the most critical erosion zones exceeding 150 t ha-1 yr-1, mainly in steep and poorly vegetated areas. These findings demonstrate the effectiveness of coupling RUSLE with GIS and remote sensing for mapping erosion risk in data-scarce environments. The generated erosion risk map serves as a key tool to support decision-making, promote sustainable land management, and implement targeted soil and water conservation strategies in fragile semi-arid Mediterranean ecosystems.
Dehydrogenase enzyme activity and lead (Pb) availability due to the application of biochar and Bacillus sp. in heavy metal-contaminated soil Solekhah, Bella Agit; Priyadarshini, Rossyda; Maroeto, Maroeto
Journal of Degraded and Mining Lands Management Vol. 13 No. 1 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.131.9645

Abstract

The increase in industrial productivity has raised global concerns about heavy metal pollution in soil. Heavy metals pose a major obstacle to natural degradation processes, potentially disrupting the life of soil microorganisms and affecting the enzymes they produce. Intracellular dehydrogenases are more sensitive to contaminants than extracellular enzymes, making them highly effective indicators of heavy metal pollution in soil. This study aimed to evaluate soil dehydrogenase activity and lead (Pb) availability following the application of biochar and Bacillus sp. to heavy metal-contaminated soil. The experimental design used a completely randomized factorial design with two factors. The first factor was the form of giving rice husk biochar (D) with four dose levels: 0 t/ha (D0), 20 t/ha (D1), 40 t/ha (D2), and 60 t/ha (D3). The second factor was the application of Bacillus sp. bacteria (B), with doses of 0 mL/kg soil (B0) and 25 mL/kg soil (B1). The results of this study showed that the combination of rice husk biochar and Bacillus sp. significantly increased dehydrogenase enzyme activity. The highest increase was observed in the sixth week of incubation with D3B1 treatment (biochar at 60 t/ha and Bacillus sp. at 25 mL/kg soil), yielding a value of 2,465.53 TPF/g. In addition, the treatment significantly reduced lead availability, with the lowest value being 1.26 ppm.
Native arbuscular mycorrhizal fungi and Albizia saponaria for potential revegetation of tropical asphalt and nickel post-mining areas Tuheteru, Faisal Danu; Husna, Husna; Nurdin, Wiwin Rahmawati; Wibowo, Surya Edy; Tuheteru, Edy Jamal; Albasri, Albasri; Arif, Asrianti
Journal of Degraded and Mining Lands Management Vol. 13 No. 1 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.131.9545

Abstract

Native arbuscular mycorrhizal fungi (AMF) have been shown to effectively enhance the growth and nutrient uptake of Vitex cofassus grown on post-asphalt mining soils. However, their potential needs to be further evaluated across various mining substrates and different tree species. This study aimed to assess the effects of native AMF inoculation on the early growth performance of Albizia saponaria seedlings cultivated on post-asphalt and post-nickel mining soils under greenhouse conditions. A completely randomized design was employed with seven treatments: uninoculated control, Racocetra crispi, Glomus intraradices, Glomus sp., Glomus sp.-LW10, Glomus sp.-SW10, and Mycofer IPB/AMF mixture. Parameters observed after three months of growth included plant height, AMF root colonization percentage, total dry weight, mycorrhizal inoculation effect (MIE), and the uptake of phosphorus (P), nitrogen (N), calcium (Ca), and nickel (Ni). The results indicated that native AMF inoculation significantly improved early growth and total dry weight of  A. saponaria seedlings. The highest MIE values were observed in the  G. intraradices treatment, reaching 92.73% and 82,9%. Native AMF inoculation also enhanced the uptake of P, N, Ca, and Ni in plant tissues. These findings suggest that local AMF isolates can be effectively utilized to improve seedling quality and accelerate the success of revegetation programs on degraded post-mining lands in Indonesia.
Geotechnical zonation and bearing capacity assessment for risk-informed foundation design in the heterogeneous soils of Girsang Sipangan Bolon, Indonesia Nata, Refky Adi; Ren, Gaofeng; Andas, Jukepsa; Yulanda, Yudi Arista; Rahmi, Hisni; Syahmer, Verra
Journal of Degraded and Mining Lands Management Vol. 13 No. 1 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.131.9567

Abstract

Subsurface?failures, often caused by poor site investigation, are a serious issue in geotechnical engineering. This research focused on unpredictable soil response at a geologically complex site in Girsang Sipangan Bolon District, Indonesia, where very high significant variation in subsoil conditions led to foundation failure. The subsurface profile was studied, and the ultimate bearing capacity (UBC) was first characterized in this research for safe foundation design. The site investigation utilized 11 boreholes, including Standard Penetration Tests (SPTs) and undisturbed sampling. They processed the readings using Meyerhof's theory and determined the UBC for strip, pad, and circular foundations. The findings showed extremely high subsurface heterogeneity (with SPT-N values between very soft top layers and ultra-dense rock-coral). Therefore, there?is a large variation in the predicted UBC. Based on statistical analysis of the data, clear geotechnical zones were defined, with some boreholes showing high, consistent capacity and others showing locally weak strata. Fill and ring foundations also had greater theoretical bearing?capacities than rectangular footings. The main conclusion is that?sufficiently pronounced subsurface heterogeneity requires site-specific geotechnical investigations to minimize the risk of differential settlement. Therefore, foundation design cannot be uniform throughout the site; deep foundations, such as end-bearing piles, are suggested in highly variable zones to transfer loads to competent strata and ensure long-term structural safety.

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