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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 1,043 Documents
 100   101   102   103   104 
Revegetation analysis of Freeport Indonesia mine reclamation area using remote sensing technology Rahmadhani, Rizky; Manessa, Masita Dwi Mandini; Supriatna, Supriatna; Setiabudi, Firman; Amiruddin, Amiruddin
Journal of Degraded and Mining Lands Management Vol. 13 No. 3 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.133.10675

Abstract

One of the largest mining companies in the world is PT Freeport Indonesia, located in Mimika Regency, Papua. In its mining operations, PT Freeport Indonesia faces a number of environmental problems, one of which is the change of vegetated land into barren land. Environmental damage caused by mining activities can be restored through reclamation activities and monitored using remote sensing technology. In this study, the remote sensing images used were Sentinel-2 images collected from 2016 to 2023 to obtain the distribution of vegetation cover index and vegetation greenness in the Grasberg Reclamation Area. The variables used to analyze changes in vegetation cover during the revegetation process in the Grasberg Reclamation Area are Normalized Difference Vegetation Index (NDVI), vegetation type, reclamation year, elevation, slope, and slope direction. This study shows that as the reclamation time increases, the area covered by vegetation with medium and high greenness levels increases. Changes in vegetation cover in the Grasberg Reclamation Area show an increasing trend covering 379.66 hectares or 98.71% of the total reclamation area and the others show a decreasing trend. Meanwhile, changes in vegetation cover in the Grasberg Reclamation Area based on the results of the correlation test are influenced by topographic conditions. The elevation of the area does not show a strong influence on vegetation cover but steep slopes will trigger a low level of vegetation cover greenness and vice versa. The vegetation on the east-facing slope has a high level of greenery because it gets enough sunlight. Monitoring changes in vegetation cover in ex-mining reclamation areas is very useful for land management policies in mining areas and reclamation planning.
Mine-influenced surface water quality at Okaba coal mine: Characterization and constructed wetland management Adegboye , Ayobami Joshua; Idowu, Kayode Augustine
Journal of Degraded and Mining Lands Management Vol. 13 No. 3 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.133.10253

Abstract

Characterization of mine-influenced surface water quality is essential for effective mine water management. This study characterized the physicochemical quality of surface water at the Okaba coal mine, Ankpa LGA, Kogi State, Nigeria, and proposed a passive constructed wetland treatment system. Water samples from nine upstream, midstream, and downstream stations were analyzed for temperature, pH, electrical conductivity, total dissolved solids, salinity, total hardness, sulphate, biochemical oxygen demand, chemical oxygen demand, and nitrate. Results were compared against World Health Organization and Nigerian regulatory permissible limits. Mean values recorded were: temperature 28.40 ± 0.8 °C, pH 6.93 ± 0.13, electrical conductivity 562.7 ± 2.9 µS/cm, total dissolved solids 358.5 ± 4.2 mg/L, total hardness 672.9 ± 1.6 mg/L, sulphate 57.3 ± 0.6 mg/L, biochemical oxygen demand 100.0 ± 0.8 mg/L, chemical oxygen demand 218.0 ± 2.1 mg/L, and nitrate 29.0 ± 0.8 mg/L. Electrical conductivity, total hardness, biochemical oxygen demand, chemical oxygen demand, and nitrate exceeded permissible limits, signifying contamination from acid mine drainage, organic loading, and mineral leaching. A free water surface constructed wetland was designed using the first-order kinetic model of Kadlec and Wallace (2009). A three-cell system of 4.15 ha with a 14.4-day hydraulic retention time achieved full regulatory compliance for all exceedance parameters. These findings established a hydrogeochemical baseline and demonstrated the feasibility of passive wetland treatment at active Nigerian coal mining sites.
Leaching response of coastal sandy soils to subsurface hybrid ameliorant layering across homogeneous land units Utami, Sari Widya; Fadillah, Fadillah; AJi, Galih Mustiko
Journal of Degraded and Mining Lands Management Vol. 13 No. 3 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.133.10851

Abstract

Sandy soil is characterized by a coarse texture, low organic content, low water-holding capacity, and rapid leaching. Soil amendments are usually applied to improve soil physicochemical characteristics, but their effects are only short-term. Subsurface hybrid ameliorant layering has been proposed as a means to reduce leaching in sandy soils. This study evaluated the leaching responses to subsurface hybrid ameliorant placement within the soil, using a soil column experiment with two factors: kinds of HLU (Homogeneous Land Unit) as the first factor, which consisted of eight HLUs, and ameliorant placement treatments as the second factor, which consisted of control treatment, conventional placement, and subsurface placement. The leaching response parameters were cumulative leachate volume and the differences in organic carbon, nitrogen, and phosphorus concentrations between the upper and bottom layers. The results showed that subsurface placement can reduce the cumulative leachate volume and increase N concentration in the upper layer after the incubation period, but did not significantly affect organic carbon or phosphorus availability in either layer. The application of this treatment resulted in different responses among HLUs, which were influenced by the natural physicochemical characteristics of the soil. 
Diachronic study of vegetation cover change using remote sensing in Ain Skhouna (Saida) from 1991 to 2021 Boukacem, Abdelkader; Benaissa , Noureddine; Belkhoudja, Moulay; Kharoubi, Omar
Journal of Degraded and Mining Lands Management Vol. 13 No. 3 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.133.10555

Abstract

To evaluate the spatiotemporal dynamics of vegetation in semi-arid conditions, a diachronic analysis of plant cover change in the municipality of Ain Skhouna (Saida Province) between 1991 and 2021 was conducted. Landsat satellite imagery (TM and ETM+) was used to compute the Normalized Difference Vegetation Index (NDVI) to quantify vegetation cover dynamics over three decades. The data were processed using ENVI 5.3 and ArcGIS 10 software, and the results were compared using supervised classification and change analysis, supplemented by field observations to validate the results. The results of this study revealed marked spatio-temporal variations in vegetation cover, with a substantial decline in vegetation density between 1991 and 2000. This degradation can be attributed to multiple factors, including prolonged drought, anthropogenic pressure, overgrazing, and increased soil salinity. However, the classification maps indicated a gradual recovery of vegetation cover from 2000 to 2021, which can be associated with more favorable climatic conditions and the implementation of localized reforestation initiatives. These results highlight the importance of diachronic monitoring of vegetation cover for the conservation of plant biodiversity and the sustainable management of Sahelian–steppe ecosystems. The study emphasizes the need to integrate remote sensing tools into ecological monitoring programs to guide restoration strategies and support adaptation to climate change in steppe regions.
Monitoring and assessment of reservoir siltation in arid environments using remote sensing: The Brézina Dam case study Remmas, Zohra Hayat; Nouri, Tayeb; Benaradj, Abdelkrim
Journal of Degraded and Mining Lands Management Vol. 13 No. 3 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.133.10263

Abstract

The progressive silting up of dams in arid and semi-arid zones is a major problem, affecting storage capacity, the durability of hydraulic structures, and the sustainable management of water resources. In this context, the Brézina Dam, located in the El-Bayadh province (southwest Algeria) and with a capacity of approximately 123 million m³, was studied to characterize the morpho-sedimentary evolution of the catchment and reservoir over the period 2000–2025. The methodological approach is based on the spatio-temporal analysis of multi-date Digital Terrain Models (DTMs) using Google Earth Engine (GEE) and the calculation of the ?DTM, allowing for the identification and quantification of erosion and sedimentation zones. Descriptive and inferential statistical indicators, combined with automated thematic maps, were used to analyze topographic variations and estimate sediment volumes.The results highlight a dynamic dominated by sedimentation, with variations in the DEM (Digital Elevation Model) ranging from ?12 to +25 m and a statistically significant average increase in elevation (t ? 28.04; p < 10?¹?). Sedimentary deposits are mainly concentrated in valleys and near the dike, particularly in the 900–910 m elevation range observed in 2025. Volumetric analysis indicates that 59.54% of the surface area is affected by low-intensity sedimentation, compared to 31.42% affected by erosion, with an estimated eroded volume of 3.92 million m³ and a net positive sediment budget of +8.81 million m³.Beyond the hydraulic challenges, these results highlight the potential for valorizing dredged mud as organo-mineral amendments to improve the structure, water retention and fertility of sandy soils in arid areas, thus contributing to integrated and sustainable management of dams and agricultural systems. Keywords: Siltation, valorization, erosion, sedimentation, remote sensing, dam.
Assessing heavy metal contamination and soil fertility in degraded farmland adjacent to nickel mining: Pathway towards sustainable land management in Halmahera Region, Indonesia Ishak, Lily; Teapon, Amiruddin; Subur, Riyadi; Armaijn, Liasari; Sidayat, Mardiyani; Abdul Rachman, Idris; Ladjinga, Erwin
Journal of Degraded and Mining Lands Management Vol. 13 No. 3 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.133.10491

Abstract

A continuous decline in crop yields in the Halmahera region of Indonesia, has been attributed to potential soil contamination by heavy metals from mining activities. Yet, the extent to which such contamination directly drives farmland degradation in this region remains undercover. This study aims to quantify the concentration and spatial distribution of selected heavy metals, evaluate their ecological risks, assess soil fertility in the affected areas, and propose directions on future research for sustainable land management (SLM). Sixteen soil samples were collected and analyzed for physicochemical properties and concentrations of Fe, Ni, As, Cd, Co, and Hg. The results indicates that Fe exhibited the highest concentration (11,894 mg kg?¹), whereas Hg was negligible. Strong positive correlations and similar spatial distribution patterns were observed among Fe, Ni, and Co, which distincted from those of As and Cd. The pollution load index revealed moderate contamination for Fe and low contamination for other metals, while geoaccumulation index values ranged from low to moderate, reflecting contributions from both natural and anthropogenic sources. Ecological risk assessment indicated a low risk level. Additionally, soil fertility was considered low, characterized by reduced organic carbon, nitrogen, potassium, cation exchange capacity, and base saturation. Findings of this study provide a crucial foundation for future research to develop a conceptual framework for SLM that supports farmland restoration, improves soil health, increases crop yields and ecosystem services, and enhances the knowledge and economic benefits of local communities in this region.
Synergistic effect of Azotobacter sp. and bulking agents on hydrocarbon bioremediation performance in petroleum-contaminated soil Suryatmana, Pujawati; Hindersah, Reginawanti; Setiawati, Mieke Rochimi; Parnadi, Wahyudi Widyatmoko; Zulkifliani, Zulkifliani; Syafrizal, Syafrizal
Journal of Degraded and Mining Lands Management Vol. 13 No. 3 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.133.10369

Abstract

Petroleum hydrocarbon contamination is a critical environmental issue in tropical soils. This study evaluated the effects of Azotobacter sp. and two bulking agents: rice husk biochar (RHB) and spent oyster mushroom substrate (SOMS),  on a microcosm scale of petroleum-contaminated Ultisols. The experiment design used a randomized block design (RBD). Treatments included single and combined applications of Azotobacter sp. and bulking agents. Results showed that SOMS  amendment yielded significantly (p< 0.05) the highest microbial populations,  fungi (43.23 × 104 CFU g?¹) and bacteria (42.633 x 106 CFU g?¹), the highest degradation rate (0.040 mg L?¹ cell?¹ day?¹) and efficiency (81.62%) compared with the control (0.012 mg L?¹ cell?¹ day?¹; 39.55%). Azotobacter sp. inoculation combined with SOMS increased Azotobacter sp. density (59.167 × 104 CFU g?¹). Azotobacter sp. produced a biosurfactant that was dominated by Oleic acid. The hydrocarbon biodegradation rate improvements were linked to increased soil pH, nutrient availability, and biosurfactant production by Azotobacter sp. Meanwhile, RHB alone showed lower performance, but when combined with Azotobacter sp. improved degradation relative to the control. Integrating Azotobacter sp. inoculation with nutrient-rich bulking agents, particularly SOMS, significantly improves petroleum hydrocarbon biodegradation in Ultisols by optimizing physicochemical and biological conditions for indigenous microbial consortia.
Environmental process innovation and sustainable mining land management in the Philippine marble sector Eusebio, Ellaine Joy G.; Tibon, Maria Victoria P.; Garcia, Marife M.; Vicente, Khrisna F.; Mendoza, Lia Alorie P.; Fabito Jr. , Yolly M.
Journal of Degraded and Mining Lands Management Vol. 13 No. 3 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.133.10299

Abstract

Marble quarrying and processing are resource-intensive industry that contributes significantly to local economies while generating substantial environmental and social challenges. This study assessed the level of eco-process innovation implementation among marble quarrying and processing firms in Romblon Province, the Philippines’ primary marble-producing area. Using a descriptive research design, data were collected from 18 registered enterprises through a sector-specific, expert-validated instrument grounded in established environmental innovation frameworks. Descriptive statistics, including mean and standard deviation, were employed to establish a baseline profile of eco-process innovation practices. The results reveal a moderate overall level of eco-process innovation implementation. Firms exhibited high adoption of low-cost, compliance-driven practices related to energy efficiency, dust suppression, wastewater treatment, logistics optimization, and occupational health and safety. In contrast, capital-intensive, technology-dependent, and socially transformative innovations, including renewable energy use, advanced waste valorization, modern deposit evaluation technologies, comprehensive noise and vibration mitigation, and post-extraction land rehabilitation, showed low to very low levels of implementation. These patterns reflect the financial, technical, and institutional constraints commonly faced by small and medium enterprises in the marble sector. The findings highlight the need for integrated policy support, capacity-building initiatives, and collaborative mechanisms that advance both environmental performance and social sustainability. The study provides a validated baseline framework to support future longitudinal, comparative, and impact-oriented research on sustainability-oriented innovation in resource-intensive industries.
Institutional governance and degraded agricultural land management in supporting regional food security Prantama, Muhammad Barqah; Wijaya, Andy Fefta; Rozuli, Ahmad Imron; Hakim, Muhammad Lukman
Journal of Degraded and Mining Lands Management Vol. 13 No. 3 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.133.10689

Abstract

?Agricultural land degradation and land conversion increasingly threaten regional food security in Malang Regency, East Java. This study examined how biophysical vulnerability—particularly soil organic carbon decline in Inceptisol-dominated systems—interacted with land governance and agricultural productivity. This study adopted a qualitative case study approach, supported by secondary data on land use, soil characteristics, harvested area, and rice production, and complemented by document analysis of regional land protection regulations. Productivity was recalculated using official harvested area and production statistics, and long-term projections to 2035 were constructed under annual land conversion scenarios of 1% and 2%. The results suggest that merely designating land is not enough to ensure sustainable food production over the long term. To maintain the resilience of regional food systems, governance must effectively incorporate measurable efforts to restore soil quality and control land conversion.
Soil organic carbon dynamics in mountain brown soils under erosion and relief influence Djalilova, Gulnora; Nurullaev, Azamkhon
Journal of Degraded and Mining Lands Management Vol. 13 No. 3 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.133.10291

Abstract

This study investigated the influence of erosion and topographic factors on soil organic carbon (SOC) distribution in mountain brown soils of the Baysun region, Uzbekistan. Soil samples were collected from watershed, midslope, and footslope positions and analyzed using the modified Tyurin method. SOC content ranged from 3.00% in surface horizons of footslope soils to 0.24% in deeper layers of eroded slope soils, indicating substantial carbon depletion under erosion processes. Watershed soils showed relatively stable SOC distribution, while midslope positions were characterized by marked carbon losses. In contrast, footslope areas exhibited SOC accumulation in upper horizons due to depositional processes. The results demonstrated a clear topographic pattern of SOC redistribution along the catena, controlled by erosion and material transport. These findings identified eroded midslope positions as the main hotspots of SOC depletion within the studied mountain catenas. The obtained pattern provides a practical basis for prioritizing soil conservation and degraded-land management measures, including vegetation protection, runoff control, and erosion mitigation in the mountain landscapes of Baysun District.

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