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All Journal AL KAUNIYAH Jurnal Penelitian Pendidikan IPA (JPPIPA)
Widiatmaka
IPB University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Physics

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Stakeholder Interactions in Plastic Waste Management along The Ciliwung Riverbanks in DKI Jakarta Ferry Fauzi Fauzi; Widiatmaka; M Ekayani; I Firmansyah; M. R Cordova
Al-Kauniyah: Jurnal Biologi Vol. 19 No. 2 (2026): AL-KAUNIYAH: JURNAL BIOLOGI
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/kauniyah.v19i2.50332

Abstract

Plastic waste management represents a sustainable development challenge, particularly in urban riverbank areas such as the Ciliwung River in DKI Jakarta. Plastic waste management along riverbanks involves multiple actors with diverse roles, including government institutions, local communities, community organizations, universities, the private sector, and non-governmental organizations. This study aims to develop an actor-based model of plastic waste management along the Ciliwung riverbanks in DKI Jakarta using the MACTOR method. Actor identification was conducted through a literature review and interviews with key informants. The results indicate that the Balai Besar Wilayah Sungai Ciliwung Cisadane, universities, and the private sector function as dominant actors influencing policy directions in waste management. Local government agencies, technical implementation units, community organizations, and residents serve as key relay actors in policy implementation, while the informal sector represents dependent stakeholders with tangible contributions but limited involvement in decision-making processes. All actors support efforts to reduce the volume of plastic waste along the Ciliwung Riverbanks, accompanied by improvements in river water quality and reductions in public health risks.
Evaluation of Soil Degradation Due to Land Use Change Using Geospatial Analysis in the Ecological Zone of North Konawe Regency Safiun; Widiatmaka; Dwi Putro Tejo Baskoro
Jurnal Penelitian Pendidikan IPA Vol 12 No 7 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i7.15216

Abstract

Land use change is one of the major factors affecting environmental quality, particularly soil degradation. North Konawe Regency has experienced rapid regional development characterized by the expansion of agricultural land, oil palm plantations, settlements, and mining activities. This study aimed to evaluate soil degradation caused by land use change in the ecological zone of North Konawe Regency during 2003, 2013, and 2023. The results showed that forest area decreased from 451,821.4 ha (88.0%) in 2003 to 432,564.5 ha (84.3%) in 2013 and further declined to 421,032.7 ha (82.0%) in 2023. The reduction of 30,788.7 ha of forest area indicates an increasing extent of degraded land due to land conversion. In contrast, oil palm plantations increased from 3,413.0 ha to 24,986.4 ha, while mining areas expanded from 424.3 ha to 12,463.2 ha. Converted lands, particularly mining areas, showed higher levels of soil degradation characterized by reduced soil porosity and permeability. The findings indicate that increasing land use intensity contributes directly to soil degradation in North Konawe Regency.
Co-Authors Dwi Putro Tejo Baskoro Ferry Fauzi Fauzi I Firmansyah M Ekayani M. R Cordova Safiun