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What Can Spatial Assessment Reveal About Flash Flood Risk and Ecosystem Carrying Capacity in Tropical Highland Environments? Juita, Erna; Dasrizal; Ibrahim, Mohd Hairy; Yuniarti, Elsa; Ulni, Arie Zella Putra; Soni
Jurnal Penelitian Pendidikan IPA Vol 11 No 11 (2025): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i11.11889

Abstract

Flash floods are among the most destructive hydrometeorological hazards in tropical highland regions, yet their spatial risks remain poorly quantified in data-scarce environments. This study assessed flash flood risk in Solok Selatan Regency, West Sumatra (Indonesia), by integrating landform and slope classification with the Topographic Wetness Index (TWI) derived from a 30 m DEM. Historical records of 11 flood events between 2010 and 2020 were used for model validation. The analysis revealed that most of the regency is characterized by moderate flash flood risk, while high-risk zones are concentrated in steep fluvial landscapes. Validation against observed flood locations demonstrated a spatial match of 95.2%, confirming the reliability of the model. In addition, the evaluation of hydrological ecosystem service capacity indicated that over 80% of the landscape has only moderate regulatory function, limiting its ability to buffer runoff. These findings highlight the importance of integrating DEM-based hydrological indices with ecosystem assessments to support more effective disaster risk reduction and spatial planning in tropical highland environments.
Flood Hazard Mapping via High-Resolution Imagery Rohman, Arif; Nuha, Muhammad Ulin; Wibowo, Yudha Gusti; Sigalingging, Roy Chandra P.; Jumadi, Jumadi; Zamzami, Hamza Ait; Ibrahim, Mohd Hairy
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 22, No 3 (2025): November 2025
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v22i3.751-765

Abstract

Urban flooding in low-lying coastal zones like Way Lunik, Bandar Lampung, presents a growing challenge driven by rapid land use change, degraded infrastructure, and limited hydrological planning. This study combines high-resolution UAV-derived Digital Surface Models (DSM), national elevation data (DEMNAS), satellite imagery, and field-based drainage surveys to analyze flood risk in the Way Lunik watershed. Hydrological modeling shows that the watershed acts as a terminal catchment with low slopes and only two main discharge points, making it prone to runoff accumulation and tidal backflow. Significant mismatches between modeled and observed drainage patterns stem from blocked channels, informal settlements, and outdated infrastructure. Land cover analysis (2017–2023) reveals substantial growth in impervious surfaces, especially over former green or agricultural areas, increasing runoff and decreasing infiltration. Field surveys confirm drainage blind spots, unplanned flow paths, and encroached outlets in industrial and residential zones. The study also maps building types and clusters of flood-prone areas, often overlapping with marginalized neighborhoods and public facilities. By integrating elevation data, UAV imagery, and ground mapping, this research provides a spatially detailed assessment of urban flood hazards, emphasizing the importance of watershed-scale planning, infrastructure renewal, and the role of UAVs in adaptive flood risk management.
From Engagement to Empowerment: Transformative Ecological Citizenship among the Tengger Indigenous Community through Tri Hita Karana Local Wisdom Triyanto, Triyanto; Noventari, Widya; Maulana, Bariq; Anggraheni, Siska Fitri; Ibrahim, Mohd Hairy
Jurnal Pemberdayaan Masyarakat Vol 4, No 4 (2025)
Publisher : Yayasan Keluarga Guru Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46843/jpm.v4i4.539

Abstract

This research explores how the Tengger indigenous community in Indonesia practices a transformative model of ecological citizenship, rooted in the local cosmology of Tri Hita Karana, which integrates harmony between humans, nature, and God. In response to the growing global attention to community-based environmental governance, this study aims to analyse how spiritual and cultural practices among the Tengger people shape sustainable ecological behaviour and collective resource management. Using a participatory ethnographic approach, the research engaged seven key informants, including dukun adat (traditional leaders), youth, women's groups, and local government representatives. Data were collected through in-depth interviews, participatory observations, and document analysis to capture the community's everyday ecological practices and moral reasoning. The findings reveal that rituals such as Yadnya Kasada, along with collective practices like forest protection and water management, are legitimized through sacred values and customary norms that sustain environmental stewardship. Moreover, the increasing participation of youth and women in ecological education and sustainable livelihood programs signifies a shift towards inclusive and participatory governance. This study contributes to the theoretical development of indigenous-based ecological citizenship by conceptualizing it as a vernacular, spiritually grounded, and participatory model of environmental governance that bridges local cosmology with global sustainability frameworks.