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Hendrata Wibisana
Universitas Pembangunan Nasional “Veteran” Jawa Timur
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Analisis Strategi Pengelolaan Hutan Rakyat Berbasis Skema Forest Stewardship Council untuk Mitigasi Dampak Deforestasi (Studi Kasus di Forest Management Unit Wana Semeru Agung, Lumajang) Wenddy Adiguna; Hendrata Wibisana; Hervina Puspitosari
Rekayasa Vol 19, No 1: January - April 2026
Publisher : Universitas Trunodjoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v19i1.33968

Abstract

The deforestation rate in the buffer zone of Bromo Tengger Semeru National Park (TNBTS) poses a serious threat to the stability of the local ecosystem. This study aims to analyze land cover dynamics and evaluate community forest management strategies based on the Forest Stewardship Council (FSC) scheme as a deforestation mitigation instrument at FMU Wana Semeru Agung, Lumajang. The research contribution is providing a comprehensive analysis of the integration between international certification standards and local policies in maintaining the buffer zone of a conservation area. The method employed is mixed methods, combining spatial analysis and William N. Dunn’s policy evaluation model. The results indicate that the integration of FSC standards has significantly suppressed deforestation rates, with open land area successfully reduced to 0 Ha during the 2023-2024 period. This strategy proved ecologically effective through the implementation of agroforestry systems and economically efficient, with 98% of farmers reporting an increase in income. In conclusion, the FSC scheme is effective as a site-level deforestation mitigation instrument, although the "emergency felling" (tebang butuh) phenomenon due to financial pressure remains a major challenge for land cover sustainability. It is recommended that local governments provide economic incentives such as "delayed felling" compensation or certification subsidies for farmers to maintain the consistency of community forest cover in the long term.
Pemetaan Suhu dan Tekanan Udara terhadap Faktor Kepadatan Lalu Lintas di Ruas Jalan Wilayah Kabupaten Mojokerto Agi Rahmantoko Erlangga; Hendrata Wibisana
Jurnal Talenta Sipil Vol 9, No 1 (2026): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v9i1.1095

Abstract

Mojokerto Regency, East Java, is a region with rapid population growth and high motor vehicle usage. This condition leads to significant traffic congestion, especially during peak hours, and contributes to increased exhaust gas emissions such as carbon dioxide (CO₂), carbon monoxide (CO), and sulfur dioxide (SO₂). These emissions not only deteriorate air quality but also affect temperature, air pressure, and public health. This study aims to: (1) calculate vehicle volume on major roads in Mojokerto Regency; (2) analyze the degree of saturation (DS) as an indicator of traffic density; (3) measure CO₂ emissions; and (4) map temperature and air pressure using Geographic Information Systems (GIS). The research method involved field surveys, direct observation, traffic volume data recording, and measurement of temperature, air pressure, and CO₂ concentration during peak hours in the morning (06.00–09.00) and afternoon (15.00–18.00). Data were analyzed using statistical approaches, regression, T-test, and ANOVA to identify relationships among variables. The results show that high vehicle volume is directly proportional to an increase in DS values, with several road segments approaching saturation. Furthermore, the increase in vehicle volume correlates with higher air temperature, air pressure, and CO₂ concentration. GIS-based mapping illustrates the spatial distribution of traffic density and environmental conditions. This study concludes that traffic management and sustainable transportation development are essential to reduce the negative impacts on the environment and public health in Mojokerto Regency.
Karakteristik Bahan Organik Alami pada Air Sungai Akibat Pengaruh Mikroalga Nitzschia sp. Dheas Rizqi Ameilia; Okik Hendriyanto Cahyonugroho; Hendrata Wibisana; Nur Laili Alfiatin Mukharomah
Jurnal Serambi Engineering Vol. 11 No. 3 (2026): Juli 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Bahan organik alami merupakan kumpulan senyawa organik alami yang banyak ditemukan di perairan dan berasal dari proses dekomposisi bahan organik maupun aktivitas organisme akuatik, termasuk mikroalga. Keberadaan mikroalga di perairan dapat memengaruhi karakteristik bahan organik alami melalui proses pertumbuhan, metabolisme, dan lisis sel yang menghasilkan berbagai senyawa organik. Penelitian ini bertujuan untuk mengetahui bagaimana keberadaan mikroalga Nitzschia sp. dapat memengaruhi bahan organik alami di air sungai. Penelitian ini dilakukan secara batch dengan reaktor kapasitas 1,5 L yang berisi air Sungai Tambak Oso dan kultur Nitzshia sp. yang diaerasi selama penelitian, kemudian dilakukan sampling pada waktu 0, 3, 6, dan 9 hari pengamatan. Hasil penelitian menunjukkan bahwa penambahan Nitzschia sp. memengaruhi karakteristik bahan organik alami, ditunjukkan oleh perubahan nilai COD. Pada fase pertumbuhan Nitzschia sp., nilai COD cenderung menurun akibat pemanfaatan senyawa organik untuk pembentukan biomassa, sedangkan pada fase kematian terjadi peningkatan akibat pelepasan senyawa organik hasil lisis sel ke dalam perairan. Perlakuan dengan rasio Nitzschia sp. 1:1 menghasilkan kandungan bahan organik lebih tinggi yaitu 1500 mg/L dibandingkan rasio 3:1 yang hanya 1333.3 mg/L. Hal ini menunjukkan bahwa semakin besar rasio mikroalga Nitzschia sp. yang ditambahkan maka semakin besar kontribusinya terhadap peningkatan kandungan bahan organik alami di dalam air sungai.
Co-Authors Agi Rahmantoko Erlangga Dheas Rizqi Ameilia Hervina Puspitosari, Hervina Nur Laili Alfiatin Mukharomah Okik Hendriyanto Cahyonugroho Wenddy Adiguna