Leuser Journal of Environmental Studies

A Bibliometric and Quantitative Review of Renewable Energy–Powered Mine Dewatering Systems: Trends, Performance, and Gaps

2026-03-31T09:48:11+07:00

Renewable energy integration into mine dewatering systems has gained increasing attention amid rising energy costs, decarbonization pressures, and hydrological variability in mining operations. However, existing studies remain fragmented across hydrogeological modeling, hybrid energy optimization, and environmental assessment, limiting cross-study comparability and system-level integration. This study conducts a structured bibliometric and quantitative synthesis to examine the evolution of research, collaboration patterns, thematic concentration, and methodological gaps in renewable energy–based mine dewatering systems between 2015 and 2025. A PRISMA-based dataset of 43 eligible publications was analyzed using co-authorship networks, keyword co-occurrence mapping, temporal overlay visualization, and composite bibliometric scoring. The results reveal a transition from hydrogeology-focused research toward hybrid renewable integration and energy storage–oriented systems. Publication activity increases significantly after 2020, with a peak in citation impact around that time. Energy storage, renewable integration, and groundwater management emerge as dominant research hotspots, while system-level optimization, stochastic hydrological modeling, real-time control, and long-term validation remain underdeveloped. Quantitative evidence indicates energy savings of approximately 12–25% and carbon emission reductions of 20–40%, although these remain constrained by heterogeneous baselines and deterministic modeling approaches. This study proposes a conceptual analytical framework integrating bibliometric structural analysis, temporal performance evaluation, and gap-driven synthesis to support uncertainty-aware and system-level evaluation of renewable-based mine dewatering systems. The findings guide scalable, integrated dewatering strategies across diverse mining contexts.

Patterns of Termite Diversity and Their Ecological Associations with Dipterocarpaceae in the Soraya Research Station, Leuser Ecosystem, Indonesia

2026-04-07T19:29:48+07:00

This study aimed to assess termite diversity and habitat distribution at the Soraya Research Station (SRS), analyze ecological associations between termite species and Dipterocarpaceae, and identify key interaction types and their ecological roles in forest succession. Termite sampling was conducted using a standardized belt transect method across 50 subplots (0.5 ha). A total of 48 termite species from 2 families and 17 genera were recorded, with Termitidae (43 species) being the dominant family. Termite distribution was strongly associated with decomposing substrates, particularly fallen logs, while living trees showed high resistance to colonization. Despite the dominance of Dipterocarpaceae, only 10.4% of termite taxa interacted directly with these trees, and 92,1% of examined Dipterocarpaceae structures showed no active colonization. Specific interactions identified included neutral associations (Hospitalitermes hospitalis), opportunistic pest (Nasutitermes roboratus), and specialized decomposers (Coptotermes curvignathus, Macrotermes malaccensis, and Pericapritermes samarangi). The high termite diversity indicates significant ecological recovery at SRS. Termite-host interactions are primarily governed by substrate quality and decomposition stages rather than host identity, highlighting the effective structural and chemical defenses of living Dipterocarpaceae in secondary tropical forests.

Development of a Scoring-Based Renewable Energy Readiness Index for Commercial Buildings: An Integrated Framework Based on Energy Audit Findings

2026-04-17T10:33:46+07:00

The building sector plays a significant role in global energy consumption and carbon emissions, necessitating the integration of renewable energy systems. However, conventional energy audits primarily focus on technical efficiency and do not provide a structured assessment of a building’s readiness for renewable energy implementation. This study addresses this gap by developing a Renewable Energy Readiness Assessment Framework (RERAF) and its corresponding Renewable Energy Readiness Index (RERI), which integrate energy audit findings with multidimensional readiness factors. The framework comprises nine dimensions—technical, managerial, economic, regulatory, environmental, social, digital, resilience, and institutional—operationalized through an evidence-based scoring approach using a standardized Likert scale (0–4). To maintain methodological neutrality at the initial development stage, all dimensions and indicators are assigned equal weights (equal weighting scheme), thereby avoiding subjective bias in the absence of expert-based validation. The framework was applied to a commercial office building in Indonesia using energy audit data, supporting documents, and operational information. The results show a RERI score of 2.39 (equivalent to 60.00 on a normalized scale), indicating a moderate level of readiness. The analysis reveals a structural imbalance between relatively strong technical readiness and weaker non-technical dimensions, particularly in managerial, economic, digital, and institutional aspects. These findings highlight that technical feasibility alone is insufficient to ensure successful renewable energy adoption. The proposed framework contributes to bridging the gap between energy audit practices and renewable energy readiness assessment by providing a transparent, evidence-based, and reproducible decision-support tool for stakeholders in the building sector.