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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 1,551 Documents
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Biotechnological potential of Astragalus armatus rhizobacteria for heavy metal phytoremediation Bakkali Bouarrakia, Mounia; El Yemlahi, Anass; Laglaoui, Amin; Bakkali, Mohammed; Arakrak, Abdelhay
Journal of Degraded and Mining Lands Management Vol. 13 No. 4 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.134.11053

Abstract

Despite elevated heavy metal concentrations in the Zeïda mining area (High Moulouya, Morocco), the rhizosphere of the native metallophyte Astragalus armatus harbored a diverse community of rhizobacteria with strong plant growth-promoting capacities. This study aimed to evaluate the biotechnological potential of these rhizobacteria through genetic, biochemical, and physiological characterization of key functional traits to identify robust strains suitable for bioinoculant development. Five bacterial strains were isolated from the rhizospheric soil of A. armatus and identified by 16S rDNA phylogenetic analysis as members of the genera Bacillus and Acinetobacter. Functional assays revealed multiple plant growth-promoting traits, including indole-3-acetic acid production, ACC deaminase activity, phosphate solubilization, ammonia and siderophore production, and lytic enzyme activities. Most strains exhibited strong resistance to lead and variable tolerance to zinc, copper, and cadmium, reflecting adaptation to metal-contaminated environments. Comparative analysis revealed functional complementarity among strains, with Bacillus subtilis AaR115 showing high nutrient mobilization and antifungal activity, while Acinetobacter soli AaR56 demonstrated greater tolerance to abiotic stress. These findings indicate that native rhizobacteria associated with A. armatus represent promising candidates for phytoremediation and sustainable restoration of metal-degraded soils.
Spatial modeling of deforestation susceptibility in the Tepo Asa Aroa Forest Management Unit, Central Sulawesi Province, Indonesia Arianingsih, Ida; Somba, Bunga Elim; Malik, Adam; Golar, Golar; Hulu, Amati Eltriman; Adriansyah R, Dandy; Toknok, Bau
Journal of Degraded and Mining Lands Management Vol. 13 No. 4 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.134.11131

Abstract

Spatial information on deforestation is essential for supporting site-level forest management in areas experiencing land-cover change. This study aimed to detect deforestation in the Tepo Asa Aroa Forest Management Unit and to model its spatial probability and driving factors. Spectral changes between 2015 and 2026 were quantified using Change Vector Analysis, in which magnitude and direction were derived from multispectral bands and vegetation-related indices. These variables, together with spectral and index differences, were used as predictors in a Random Forest algorithm to detect deforestation. Binary logistic regression was then applied to model deforestation probability using distance from roads, elevation, slope, distance from settlements, distance from forest utilization permits, distance from rivers, population density, and distance from agricultural areas. The results showed that deforestation covered 1,956.23 ha during 2015-2026, with an average annual rate of 177.84 ha. All driving factors were statistically significant. Distance from roads, elevation, slope, distance from forest utilization permits, distance from rivers, and distance from agricultural areas reduced the odds of deforestation, whereas distance from settlements and population density increased them. The model showed good discrimination, with an area under the receiver operating characteristic curve of 0.889. The predicted probabilities were classified into low, moderate, and high deforestation susceptibility classes. These findings provide spatial evidence to support monitoring, field verification, rehabilitation planning, and sustainable forest management.
Land-use and land-cover changes in the São Félix do Xingu microregion, Pará, Brazil: Cattle ranching as a direct driver and mining as a potential indirect driver of landscape transformation Wanzeler, Glaize Rodrigues; Rodrigues , Izabeli da S.; Coutinho , Henrique M.; de OLiveira, Gilmara Maureline T. da S.; de Oliveira, Eder Silva
Journal of Degraded and Mining Lands Management Vol. 13 No. 4 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.134.11161

Abstract

This article analyzes land use and land cover dynamics in the São Félix do Xingu microregion (Pará, Brazil) over 25 years, combining multitemporal geospatial analysis and panel-data econometric modeling. Data from MapBiomas, SIDRA/IBGE, the Geological Survey of Brazil, and the National Mining Agency were integrated in a GIS environment (QGIS) and analyzed in R. The geospatial analysis, the core of the investigation, revealed substantial suppression of native vegetation, particularly in São Félix do Xingu and Cumaru do Norte, along with the expansion of mining activity within the Kayapó Indigenous Land and 433 mining titles overlapping Conservation Units and Indigenous Lands. As supporting evidence, a system of panel-data equations with municipality and year fixed effects describes an intertemporal sequence in which accumulated mining was associated with cattle-herd expansion (? = 0.151), and lagged cattle herd size was positively associated with pasture expansion (? = 0.375). The results indicate that cattle ranching remains the main direct driver of forest conversion, while the findings suggest that illegal mining may act as an indirect driver of regional productive reorganization, in a context of limited environmental and territorial governance.
Assessment of the current ecological state and soil fertility level in the territory of the Tavrida Art Cluster (Kapsel Bay Catchment Basin) Repetskaya, Anna; Rudyk, Aleksandr; Nikiforova, Aleksandra; Tabunshchik, Vladimir; Pham, Cam Nhung
Journal of Degraded and Mining Lands Management Vol. 13 No. 4 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.134.11263

Abstract

This study presents a comprehensive assessment of the agrochemical, physicochemical, and ecological properties of soils within the Tavrida Art Cluster (Kapsel Bay catchment, Southeastern Crimea). The research was based on field descriptions of soil profiles and laboratory analyses of 19 samples collected from several depth intervals in November 2024. Key fertility indicators were determined, including pH in water suspension, organic matter content, nitrate nitrogen, available phosphorus and potassium, particle?size distribution, and salinity level. The soils were found to be characterised by alkaline pH (7.5-8.4), extremely low nitrate nitrogen (below the detection limit in 89.5% of samples), acute available phosphorus deficiency (63.2% of samples ?1.5?mg/100?g), and low organic matter content (75% of samples <3.0%). The heavy texture, with a physical clay fraction of 45-75%, exacerbates these adverse properties. An original integrated fertility index (IFI) was developed for a comprehensive evaluation; its mean value was 1.58 out of 5.0, indicating extremely low agricultural potential. The observed properties are shown to represent the natural geochemical background formed on carbonate parent materials under an arid climate, rather than being a consequence of anthropogenic degradation. A strategy for adaptive landscaping is proposed, based on targeted soil amelioration, selection of native xerophytes, and preservation of the territory’s natural ecological framework.
Soil aggregate stability and pyrophosphate-extractable carbon, aluminum, and iron in Martabe gold mine reclamation Alfina, Rina; Iskandar, Iskandar; Suryaningtyas, Dyah Tjahyandari; Mulyanto, Budi; Nugraha, Candra; Anwar, Syaiful; Asman, Auzia
Journal of Degraded and Mining Lands Management Vol. 13 No. 4 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.134.11239

Abstract

The success of mine-soil reclamation depends on vegetation recovery, the development of stable soil structure, and effective carbon stabilization. Therefore, this study aimed to assess changes in pyrophosphate-extractable carbon (Cp), aluminum (Alp), and iron (Fep) and their relationships with soil aggregate stability across reclamation age groups at Martabe Gold Mine. Soil samples were collected at depths of 0-15 and 15-30 cm from reclamation areas aged 0-4, 5-8, and 9-12 years, with natural forest as a reference. Cp, Alp, and Fep were then analyzed using sodium pyrophosphate extraction, while aggregate stability was determined as water-stable aggregates (WSA) using wet sieving. Relationships among Cp, Alp, Fep, total organic carbon, and WSA were analyzed using principal component analysis (PCA). The results showed a progressive increase in Cp, Alp, Fep, and WSA with reclamation age. PCA indicated strong associations between these parameters and WSA along the main soil recovery gradient. These parameters could be used to evaluate soil recovery, carbon stabilization, and reclamation progress. Soil recovery progressed from early to intermediate and advanced stages, but the 9-12-year sites remained below the natural forest condition. Continued vegetation maintenance, organic matter inputs, enrichment with long-lived species, and minimized soil disturbance are recommended to sustain recovery.
Stress-driven metabolic adaptation of Passiflora foetida L. root across coal mine reclamation ages: Linking soil chemistry, metabolomics and bioactivity Meray, Nishia Waya; Safitri, Anna; Ulfa, Siti Mariyah; Mustafa, Irfan
Journal of Degraded and Mining Lands Management Vol. 13 No. 4 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.134.11185

Abstract

Coal reclamation sites, characterized by low pH and high heavy metal concentrations, serve as invaluable stress laboratories. Plants growing in these environments are forced to upregulate secondary metabolic pathways as a defense mechanism against oxidative stress. This stress condition makes the flora of coal reclamation sites a more concentrated source of bioactive compounds than plants in normal soil. This study profiled the bioactive compounds and analyzed the biological activity of Passiflora foetida L. root extracts based on the age of the reclamation site. The ethanol extracts from P. foetida plants were fractionated to identify the bioactive compounds. The bioactive compound profile was determined using LC-QTOF-MS-based untargeted detection methods, while the biological activity analysis included the evaluation of antioxidant and antimicrobial properties in each obtained fraction. Chemical profiling revealed highly significant differences in compound composition among the various sample types. Across all bioassays, the ethyl acetate fraction from the reclamation sample was consistently the most active, confirming that semi-polar alkaloids, flavonoids, and terpenoids are the dominant pharmacophore classes in the root extracts of P. foetida. Analysis of the abundance of compounds produced in response to stress at the reclamation site indicates pharmacological potential, supporting the value of plant material from both locations as a source of bioactive natural products. This demonstrates the significant potential of the downstream processing of former mining sites into promising sources of natural medicines.
Integrated assessment of groundwater quality for drinking and irrigation using WQI, GIS, hydrochemical and statistical analysis Belete, Fonose; Govindhasamy, Kumar; Yusoof, Peer Mohamed Appa Mooppan Abdul Rahman; Ramachandran, Poomalai; Jothimani, Muralitharan
Journal of Degraded and Mining Lands Management Vol. 13 No. 4 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.134.11201

Abstract

Groundwater is the principal source of domestic and irrigation water in Limuna Bilbilo Woreda, East Arsi Zone, Ethiopia. The study was conducted to evaluate groundwater quality using the Water Quality Index (WQI), GIS, hydrochemical facies analysis, irrigation-water indices, lithological interpretation, and statistical analysis. Eighteen groundwater samples from ten springs and eight boreholes were analyzed for 21 physicochemical parameters. The suitability of drinking water was determined using the weighted arithmetic WQI method based on WHO and Ethiopian standards, and irrigation suitability was determined using EC, TDS, SAR, Na%, RSC, PI, MAR, and Kelley's index. The WQI results indicated that 61.1% of the samples were excellent, 27.8% good, 5.6% poor, and 5.6% very poor for drinking. The majority of groundwater sources were suitable for irrigation, though some boreholes had local sodium and magnesium hazards. The Ca-Mg-HCO3 water type was the most dominant hydrochemical facies, associated with recharge, mineral weathering, and water-rock interaction. The results provide a baseline for groundwater monitoring, aquifer protection, and water-supply planning in rural volcanic terrains.
Environmental, technogenic and biological safety assessment in the impact zone of the Bogdanka mine spoil tip (Lublin coal basin) Popovych, Vasyl; Boyko, Taras; Serhiyenko, Victoria; Shuplat, Taras; Kit, Ostap; Stadnik, Vitalii; Sozanskyi, Martyn; Telak, Oksana
Journal of Degraded and Mining Lands Management Vol. 13 No. 4 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.134.11325

Abstract

The results of research on the natural phytomeliorative effectiveness of vegetation cover and the dependence of these processes on the content of chemical elements in edaphic soils in the impact zone of a coal mine spoil tip are presented. It has been established that succession processes occur in areas with a high phytomeliorative effectiveness coefficient (KFM=5.0-5.5), and a biocenotic environment is formed, gradually optimizing the edaphotope and contributing to a gradual increase in fertility due to seasonal precipitation and improvement of the mechanical structure of the soil by developing root systems of plantings. In areas with a low phytomelirative efficiency coefficient (KFM=3.0-3.5), the pioneer stage of succession is slow due to the contamination of edaphotopes with heavy metals and other chemical elements, the concentration of which exceeds the maximum permissible limits in some areas. The elemental composition of edaphic sites was determined based on 18 samples taken from 6 areas. Each sample was analyzed for the content of macro- and microelements: Mg, Al, Si, P, S, K, Ca, Ti, V, Mn, Fe, Ni, Cu, Zn, Sr, Y, Zr, and Pb. Among the microelements, the highest average concentrations were found for iron (Fe = 1.27·104 mg/kg) and manganese (Mn = 370 mg/kg), while nickel (Ni = 24 mg/kg) and copper (Cu = 21 mg/kg) had the lowest. The presence of local spots with high concentrations of Pb and Zn may be due to sulfide phases (e.g., galena or sphalerite) in the tailings. The average lead content (25.8 mg/kg) is 86% of the permissible limit (30 mg/kg), which is an alarming sign of possible exceedance in individual samples. Vanadium (145 mg/kg) almost reaches the permissible limit (150 mg/kg). Together with the elevated sulfur content, this may indicate the presence of pyrite and other sulfide minerals. It should be noted that the maximum values in the sample significantly exceed the average: for example, zinc reaches 377 mg/kg (126% of the MPC), and lead – 36.9 mg/kg (123% of the MPC). This means that local sampling points may be heavily contaminated and require phytomelioration and recultivation efforts to reduce the impact on human health in the coal mining area.
Assessment of soil physical quality and its potential influence on plant establishment in reclaimed coal mining land of tropical Indonesia Herman, Welly; Hermawan, Bandi; Sulistyo, Bambang; Meilyanto, Tedy
Journal of Degraded and Mining Lands Management Vol. 13 No. 4 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.134.11251

Abstract

Coal mining activities significantly alter soil physical functions, affecting reclaimed land's capacity to support vegetation recovery. This study aimed to assess soil physical quality and evaluate its potential influence on plant establishment on reclaimed coal-mining land in tropical Indonesia. The study was conducted in reclaimed coal mining areas of Bukit Sunur, Bengkulu Province, Indonesia, using a limited chronosequence approach involving four reclamation ages (2014, 2015, 2018, and 2024). Soil physical properties, including texture, soil moisture, bulk density, particle density, total porosity, permeability, and aggregate distribution, were analysed to evaluate variations in soil functional conditions. An integrated Soil Physical Quality Index (SPQI) was developed using selected physical indicators weighted through Principal Component Analysis (PCA). The results showed that soil physical characteristics varied by reclamation age, particularly soil moisture content, permeability, and aggregate distribution. The 2024 reclamation block exhibited higher water retention capacity due to its clay-dominated texture but showed limited permeability and aggregate development. In contrast, the 2014 reclamation block demonstrated the highest SPQI value (0.822), characterised by better pore functionality, higher permeability, lower bulk density, and more balanced structural conditions. The findings indicate that an integrated soil physical assessment using SPQI provides a useful approach for evaluating reclaimed-soil functionality and identifying its potential to support plant establishment. However, further studies integrating soil physical indicators with direct vegetation measurements are required to validate the relationship between soil quality and plant establishment performance.
Biodegradation of benzene by a novel Rhodococcus sp. MKS26 isolated from petroleum refinery wastewater for remediation of hydrocarbon-contaminated environments Sipahutar, Merry Krisdawati; Abdullah , Rosnah; Duc, Ha Danh
Journal of Degraded and Mining Lands Management Vol. 13 No. 4 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.134.11279

Abstract

Petroleum refinery activities are major sources of benzene contamination that contribute to the degradation of industrial soils and water resources, posing significant environmental and ecological risks. Biological remediation using indigenous microorganisms represents a sustainable alternative to conventional physicochemical treatments for restoring hydrocarbon-contaminated environments. This study aimed to isolate and characterize an efficient indigenous benzene-degrading bacterium from petroleum refinery wastewater and evaluate its biodegradation performance under different environmental and nutritional conditions. The isolate, designated Rhodococcus sp. MKS26, was identified by morphological characterization and 16S rRNA gene sequence analysis. Benzene degradation was evaluated under varying substrate concentrations, pH, temperature, nutrient composition, oxygen availability, and metal ion supplementation, while biodegradation kinetics were analyzed using the Michaelis–Menten model. Phylogenetic analysis placed strain MKS26 within the Rhodococcus erythropolis clade. Under optimal conditions (50 mg/L benzene, pH 7.0, and 30 °C), strain MKS26 removed 95.8 ± 1.2% of benzene within 72 h. Benzene degradation followed Michaelis–Menten kinetics, with a maximum specific degradation rate (Vmax) of 1.2 mg/mg/h and a half-saturation constant (Ks) of 8-12 mg/L. Benzene removal was enhanced by succinate, inorganic nitrogen, adequate oxygen, and Fe²+. The strain also maintained stable activity in non-sterile refinery wastewater. These findings demonstrate the potential of Rhodococcus sp. MKS26 as an indigenous bioaugmentation agent for benzene-contaminated wastewater and hydrocarbon-polluted industrial environments.

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