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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) BULLET : Jurnal Multidisiplin Ilmu
Dasrizal
Universitas PGRI Sumatera Barat
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Nursing Physics

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Perubahan Penggunaan Lahan Di Kecamatan Nanggalo Kota Padang Arie Zella Putra Ulni; Dasrizal; Elvi Zuriyani; Afrital Rezki; Erna Juita
BULLET : Jurnal Multidisiplin Ilmu Vol. 2 No. 3 (2023): BULLET : Jurnal Multidisiplin Ilmu
Publisher : CV. Multi Kreasi Media

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Abstract

Changes in land use are basically unavoidable in the implementation of development. Rapid population growth and the increasing demand for land by the community, often results in conflicts of interest over land use and discrepancies between land use and its allotment plan. The land is limited and cannot be added except by reclamation activities, so that limited land in urban areas causes cities to develop physically towards the outskirts of the city. The increase in the number of urban residents also means an increase in the need for land. Because land cannot increase, what happens is a change in land use which tends to reduce the proportion of land that was previously agricultural land use to non-agricultural land. Changes in land use are all human interventions, both permanently and cyclically, to a collection of natural resources and artificial resources, which as a whole is called land, with the aim of fulfilling their needs, both material and spiritual, or both. Likewise with the land use that occurred in the District of Nanggalo, in 2006 there were still many agricultural lands found.
What Can Spatial Assessment Reveal About Flash Flood Risk and Ecosystem Carrying Capacity in Tropical Highland Environments? Erna Juita; Dasrizal; Mohd Hairy Ibrahim; Elsa Yuniarti; Arie Zella Putra Ulni; 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.
Co-Authors Afrital Rezki Arie Zella Putra Ulni Elsa Yuniarti Elvi Zuriyani Erna M.Si Juita S.Pd Mohd Hairy Ibrahim Soni