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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Jurnal Ilmu Pertanian Indonesia Agromet Forum Pasca Sarjana Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Jurnal Ilmu Lingkungan Jurnal Perikanan dan Kelautan Jurnal Kebijakan Publik JURNAL TEKNOLOGI LINGKUNGAN Journal of Tropical Soils Jurnal Keteknikan Pertanian Majalah Geografi Indonesia Jurnal Penelitian Hutan Tanaman Agrovigor: Jurnal Agroekoteknologi Jurnal Sumberdaya Lahan Journal of Degraded and Mining Lands Management Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Jurnal Agroteknos Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Tataloka Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Caraka Tani: Journal of Sustainable Agriculture Informatika Pertanian JTERA (Jurnal Teknologi Rekayasa) Jurnal Irigasi Jurnal Penelitian Pengelolaan Daerah Aliran Sungai Journal of Environmental Engineering & Waste Management Forest and Society Musamus AE Featuring Journal Jurnal Sumberdaya Lahan Jurnal Tanah dan Iklim Jurnal Green Growth dan Manajemen Lingkungan Jurnal Penelitian Kehutanan Wallacea Policy Brief Pertanian, Kelautan, dan Biosains Tropika
Suria Darma Tarigan
Departemen Ilmu Tanah Dan Sumberdaya Lahan, Fakultas Pertanian IPB, Jl. Meranti Kampus IPB Dramaga, Bogor 16680
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Mechanical Engineering Nursing Social Sciences

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POLICY NETWORK ANALYSIS ON FOREST AND LAND FIRE AT PELALAWAN REGENCY Adiwijoyo, Adiwijoyo; Purnomo, Heri; Tarigan, Suria Darma
Jurnal Kebijakan Publik Vol 17, No 1 (2026)
Publisher : Fakultas Ilmu Sosial dan Ilmu Politik Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkp.v17i1.8952

Abstract

Forest and land fires in Pelalawan Regency, Riau Province, represent a persistent and multidimensional environmental governance challenge shaped not only by ecological factors, but also by land-use change dynamics, plantation expansion, and the complexity of cross-sectoral and multi-level policy networks. This study aims to examine the interrelationships among land cover change, hotspot dynamics, and the structural configuration of the forest and land fire control policy network in Pelalawan Regency. The research adopts an integrated approach combining spatial analysis and policy network analysis. Spatial analysis assesses land cover change and the distribution of fire hotspots for the 2000–2022 period using Terra and Aqua satellite data from the Moderate Resolution Imaging Spectroradiometer (MODIS) with a confidence level of ≥50%, overlaid with land cover data from the Ministry of Environment and Forestry. Subsequently, policy network analysis is conducted using a Social Network Analysis (SNA) approach applied to 53 regulatory instruments at the national, provincial, and regency levels, measuring degree centrality, betweenness centrality, closeness centrality, and eigenvector centrality. The findings indicate that hotspot surges prior to 2016 are strongly correlated with plantation expansion and weak policy implementation effectiveness, despite the presence of an extensive normative regulatory framework. Law No. 32/2009 is identified as the most central normative node within the policy network, while the strengthening of operational policies after 2016 has contributed significantly to the reduction of forest and land fire incidents. This study underscores that the effectiveness of forest and land fire control is determined not by regulatory proliferation, but by the integration of policy networks and cross-sectoral implementation capacity.
Assessing Land Use Intensity and Ecosystem Service Dynamics in Citarum Watershed, Indonesia Nahib, Irmadi; Widiatmaka, Widiatmaka; Tarigan, Suria Darma; Ambarwulam, Wiwin; Ramadhani, Fadhlullah
Caraka Tani: Journal of Sustainable Agriculture Vol 40, No 2 (2025): April
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v40i2.93122

Abstract

Changes in land use and land cover (LULC) significantly impact ecosystem services (ES), often leading to land degradation and disrupting natural balance. This study examines how LULC changes have influenced total ecosystem services (TES) in Citarum Watershed over the past decade. Specifically, researchers analyze (1) the shifts in LULC and key ES components—water yield (WY), soil conservation (SC), and carbon storage (CS)—from 2010 to 2020, (2) the spatial relationship between land use intensity (LUI) and ES, and (3) the synchronization and distribution patterns of LUI and TES using a coupling coordination degree (CCD) model. The findings reveal significant LULC changes between 2010 and 2020, with bare/shrubland and agricultural areas expanding by 88.37% and 2.25%, while forest land and lakes declined by 0.78% and 0.09%. These transformations affected ES values, as WY and CS decreased by 15.01% and 4.98%, whereas SC increased by 12.03%. Overall, TES declined by 7.54%, with the steepest reduction (17.70%) observed in the downstream region. The coupling coordination analysis highlights an imbalance between LUI and TES, with 65 to 68% of sub-districts classified as imbalanced. These results underscore the urgent need for integrated land-use planning strategies to restore ecosystem balance and promote sustainability in Citarum Watershed.
Optimization of Empty Fruit Bunch Application to Improve Soil Organic Carbon, Total Soil Nitrogen, Earthworm Populations, and Oil Palm Performance on Spodosols Ardiyanto, Adhy; Tarigan, Suria Darma; Widyastuti, Rahayu; Nugroho, Budi; Rivai, Fathan Aldi
Caraka Tani: Journal of Sustainable Agriculture Vol 41, No 2 (2026): April
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v41i2.110106

Abstract

Using oil palm empty fruit bunches (EFB) as an organic amendment is a crucial strategy to improve soil quality in oil palm plantations, particularly on nutrient-poor Spodosol soils. This study aimed to evaluate the effects of 2 EFB application methods (incorporation into the soil and surface mulching) on soil organic carbon (SOC), nitrogen content, earthworm populations as soil biological indicators of fertility, and oil palm performance. A 12-month field experiment was conducted with observations every 4 months, using a completely randomized design (CRD) with 3 treatments and 9 replications each (n = 27 experimental units). The treatments included no EFB application (T0), EFB incorporated into the soil (T1), and EFB applied as surface mulch (T2). The results showed that both EFB application methods significantly increased SOC compared to the control, with the highest SOC observed in T2 (2.30±0.34%) after 12 months. Earthworm populations also increased progressively, reaching 19.33 individuals m-2 in T2. Pearson correlation analysis revealed a strong positive relationship between SOC content and earthworm abundance (r = 0.60; p < 0.001). These results confirm that EFB application, especially through surface mulching, is an effective and sustainable approach to enhancing soil quality, biological activity, and ecosystem functioning on Spodosols in oil palm plantations.
Co-Authors . Asisah . HIKMATULLAH . Hikmatullah Adiwijoyo, Adiwijoyo Afri Fajar Agus Setiyono Agus Wahyudi AH. Maftuh Hafidh Zuhdi Ai Dariah Alim, Nurmaranti Ambarwulam, Wiwin Andria Harfani Qalbi Ardiyanto, Adhy Aries Suharso Ario Damar Asisah, . Asyhari, Adibtya Atang Sutandi Austin Ullyta Baba Barus Bambang Dwi Dasanto Bambang Hendro Trisasongko Bandung Sahari Bejo Slamet Boedi Tjahjono Budi Kartiwa Budi Kuncahyo Budi Nugroho Bunasor Sanim Cahyo Wibowo Darda Effendi Dede Sulaeman Dede Sulaeman, Dede Desi Nadalia Despry Nur Annisa Ahmad, Despry Nur Annisa Dodik Ridho Nurrochmat Dudung Darusman Dwi P T Baskoro Dwi Putro Tejo Baskoro Dyah Retno Panuju Enni Dwi Wahjunie Enni Dwi Wahyunie Erizal , ERNA SURYANI Erwin Hermawan Evy Damayanthi Fadhlullah Ramadhani Fajar Nugraha Faqihna Pidin Fata, Yulia Amirul Fatoni, Arif Fitriani Hayati Gangga, Adi Gunadi Firdaus Haki Yusdinar Hari Agung Haris Syahbuddin Harisson, Rhett D. Hasim Hefni Effendi Hendrayanto . Hengky Wijaya Heri Purnomo Hery Widijanto Hidayat Pawitan Hidayat Pawitan Hidayat Pawitan Hidayat Pawitan Hidayat Pawitan I Nengah Surati Jaya Idqan Fahmi Iin Ichwandi Imas Sukaesih Sitanggang IPB, DGB Irdika Mansur Irmadi Nahib Irwan Irwan Ishak Yassir ISKANDAR ZULKARNAEN SIREGAR Jamhari Jamhari Jepri, Kristoporus kartika triasary Kerstin Wiegand Kiki Rishki Ananda Kukuh Murtilaksono Kukuh Murtilaksono Kukuh Murtilaksono La Baco S Laksono Trisnantoro Lala M Kolopaking Latief Mahir Rachman Lutfy Abdulah M Agus Setiadi M. Sri Saeni M. Yanuar J. Purwanto Ma'mun Sarma Mahardika, Rabbirl Yarham Mahendra Harjianto Mahendra Harjianto Mariana Lusia Resubun Mariana Lusiana Resubun Marimin , Marisa Dwi Putri Meilasari, Nabilla Mihyal Ain Muhammad Buce Saleh Muhammad Yanuar J. Purwanto Nahrowi Naik Sinukaban Naik Sinukaban Naik Sinukaban Naik Sinukaban Naik Sinukaban Naik Sinukaban Najla Anwar Fuadi Naro Pandapotan Pasaribu Nevky Emiraj Saputra Nicko Widiatmoko Novia Mustikasari Nurdiyanto Agung Prasetya Nurlaila Mubarokah Nurmaranti Alim Oktariza, Wawan Omo Rusdiana Oteng Haridjaja Oteng Haridjaja Oteng Haridjaja Patri, Syiskhaeka Prasetya, Nurdiyanto Agung Pungkas Syahadat Purwanto, Yanuar Jarwadi Purwiyatno Hariyadi Qalbi, Andria Harfani RAHAYU WIDYASTUTI Rasminto Ravelle, Adzan Pandu Reni Kusumo Tejo Reyna Prachmayandini Reza Hanjaya Rikky Mulyawan Rima Purnamayani Rivai, Fathan Aldi Rudolf Kristian Tukayo Saiful Akhyar Lubis Sakti, Harry Hardian Santikayasa, I Putu Santun R.P Sitorus Santun R.P. Sitorus Sarif Robo Selamet Kusdaryanto Silalahi, Mangarah Sri Purwaningsih, Sri Sudradjat Sudradjat Sudradjat Sumiati Sunarti Sunarti Sunarti Sunarti Suprihatin Suprihatin Surya Cipta Ramadhan Kete Suryanto Suryanto Syafrani Syafrani Takeshi Katsumi Tania June Trihono Kadri Tukayo, Rudolf Kristian Ulfah Juniarti Siregar Ulfah Sarach Sheftiana Untung Sudadi Veybi Djoharam Vinni Lovita Widiatmaka Widya Ulfah Utami Yandra Arkeman Yayat Hidayat Yudha Kristanto Yulia Amirul Fata Yunita Lisnawati Yuri Ardhya Stanny Yusdinar, Haki Yustika, Rahmah Dewi Yusuf, Sri Malahayati