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Mentawai Tribe's Natural Disaster Mitigation Model Through Local Wisdom Dewi Rahmadani Siregar; Eri Barlian; Indang Dewata; Nurhasan Syah
Jurnal Penelitian Pendidikan IPA Vol 11 No 1 (2025): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i1.9570

Abstract

This study aims to identify and analyze mitigation and adaptation to natural disasters carried out by the Mentawai tribe. This study uses a qualitative research type with an ethnographic approach. Determination of informants in this study used the snowball sampling method, a sampling technique that starts with a small number then develops along with the data collection process. Data collection techniques: direct observation in the field, interviews, documentation, and literature studies. Data analysis was carried out through the stages of data collection, data reduction, data presentation, and drawing conclusions. Results of this study indicate that there are two models of natural disaster mitigation based on local wisdom, namely the stilt house (Uma) which is located in coastal communities and arat sabulungan which is located in hilly communities. Local wisdom of Uma which is located in coastal areas is used and trusted for mitigating earthquakes, tsunamis and floods. Local wisdom of arat sabulungan for mitigating landslides in the Mentawai hills. This study also shows structural adaptation strategies, socio-cultural adaptation and economic adaptation of the community in dealing with natural disasters in the Mentawai Islands region. Conclusion is that with local wisdom, communities are able to maintain the existence of their lives.
Kajian Daya Dukung Daerah Aliran Sungai (DAS) Anai Provinsi Sumatera Barat Aisyah Amini; Eri Barlian; Nurhasan Syah; Iswandi Umar; Dewi Rahmadani Siregar
Jurnal Penelitian Pendidikan IPA Vol 11 No 12 (2025): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i12.11727

Abstract

This study aims to assess the carrying capacity of the Anai River Basin (Watershed) in West Sumatra Province in response to increasing anthropogenic pressures and environmental changes. The research employed a spatial analysis approach utilizing remote sensing data and geographic information systems (GIS) to evaluate land cover conditions, water quality, and erosion levels. Carrying capacity analysis was conducted by calculating an environmental carrying capacity index, which included hydrological aspects, water quality, and the ecosystem's capacity to provide environmental services. The results indicate that the Anai River Basin is experiencing significant ecological pressure from land use changes, particularly the conversion of forests into agricultural land and settlements. Erosion rates in several sub-watersheds reached moderate to severe categories, with an average value of 15-25 tons/ha/year. River water quality demonstrated a decline in several parameters, especially increased turbidity levels and sediment content during the rainy season. The hydrological carrying capacity of the Anai watershed remains in a moderate category (index 0.65) but has shown a declining trend over the last five years. The findings indicate the necessity for implementing sustainable watershed management strategies. Management recommendations include forest conservation in upstream areas, the application of soil and water conservation techniques on agricultural land, the development of a regular water quality monitoring system, area zoning based on vulnerability levels, rehabilitation of 2,500 hectares of critical land, and the strengthening of watershed management institutions involving the active participation of local communities.