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All Journal HAYATI Journal of Biosciences Jurnal Sains dan Teknologi Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Journal of Degraded and Mining Lands Management Rekayasa Sipil Proceedings ACES (Annual Civil Engineering Seminar) Jurnal Teknik JURNAL ENGGANO RACIC : Rab Construction Research Syntax Literate: Jurnal Ilmiah Indonesia Civil Engineering Dimension Jurnal Sinergitas PkM & CSR Riau Journal of Empowerment Jurnal Rekayasa Sipil Seminar Nasional Lahan Suboptimal JURNAL SAINTIS Jurnal Teknik Sipil dan Teknologi Konstruksi APTEK Jurnal Abdi Insani Madaniya SELODANG MAYANG Unri Conference Series: Community Engagement Jurnal Zona Jurnal UNITEK Dinamika Lingkungan Indonesia Journal of Infrastructure and Civil Engineering Makara Journal of Technology SAINSTEK Jurnal Teknologi & Rekayasa Sipil EcoNews JP2N: Jurnal Pengembangan Dan Pengabdian Nusantara
Sutikno, Sigit
Department Of Civil Engineering, Faculty Of Engineering, University Of Riau, Pekanbaru
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PENDAMPINGAN PETANI DALAM PERENCANAAN DESAIN PRASARANA PADI SAWAH LAHAN RAWA DI DESA TOPANG KEPULAUAN MERANTI Dewi , Novia; Herlon, Meki; Sutikno, Sigit; Metananda, Arya Arismaya; Gunawan, Wawan; Mubarak, Mubarak; Qomar, Nurul
JP2N : Jurnal Pengembangan Dan Pengabdian Nusantara Vol. 3 No. 1 (2025): JP2N: September- Desember 2025
Publisher : Yayasan Pengembangan Dan Pemberdayaan Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62180/xgkgm669

Abstract

The target location for land optimization in the Kepulauan Meranti Regency is situated in Topang Village, Rangsang District. Several constraints were encountered in the development planning of infrastructure for swamp paddy fields, including the remote location, high costs of transportation and materials, among others. This community service project, therefore, aims to provide assistance in the planning process for cost estimation and priority scaling of the infrastructure to be developed for the paddy fields in Topang Village. The objective of this assistance is to align the available funding with the feasible infrastructure projects. The target participants for this activity are paddy farmers in Topang Village with a cropping index of 100 per year, who are members of a farmers' group. The service method involved facilitation, opinion surveys, and discussions concerning the infrastructure priorities for the Topang Village paddy fields. The results indicate that the participants gained an understanding of the priorities for utilizing the grant funds from the Ministry of Agriculture and the types of infrastructure to be prioritized, such as channel normalization, the construction of automatic water gates, canal barriers, farm access bridges, and the procurement of water pumps.  
Hydrological modeling of small coastal peat island in degraded peatlands of Bengkalis Island, Riau Province Sutikno, Sigit; Yusa, Muhamad; Rinaldi, Rinaldi; Muhammad, Ahmad; Saputra, Hendra; Wardani, Khusnul Setia; Yamamoto, Koichi
Journal of Degraded and Mining Lands Management Vol. 13 No. 1 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.131.9163

Abstract

Small coastal peat islands such as Bengkalis (Riau, Indonesia) are hydrologically sensitive systems where groundwater level (GWL) controls ecosystem stability. Both extremes are hazardous: prolonged low GWL elevates peat-fire, subsidence, and carbon-loss risks, while excessively high GWL can trigger bog-burst. This study developed a simple empirical model to predict daily GWL in degraded peatlands on Bengkalis Island using in situ GWL data from three sites (drained, undrained inland, and undrained coastal) and GPM satellite rainfall (October 2023-April 2025). Calibrated over one year and validated over the next seven months, the model performed well at drained and coastal sites (R ~0.82, MAPE ~14%), capturing seasonal dynamics. In contrast, its performance at the inland site was lower (R ~0.5) due to minimal water table fluctuation. Coefficient values indicate the strongest rainfall response and fastest losses at the drained site, negligible daily loss at the inland site, and intermediate behavior at the coastal site. Scenario simulations highlight management-relevant risks: 15 rain-free days cause GWL to drop below the critical -0.40 m fire-risk threshold at the drained site and coastal site, whereas undrained inland remains just above it; conversely, 60 mm/day of rain for four days can raise GWL to the surface at coastal site (bog-burst risk). The model provides a practical tool for informing rewetting strategies to manage fire and collapse risks in degraded tropical peatlands.
Predictive model for California Bearing Ratio (CBR) in expansive coastal subgrades: a rapid geotechnical assessment for degraded and marginal lowland areas Nugroho, Soewignjo Agus; Satibi, Syawal; Putra, Agus Ika; Zulkifli, Zulkifli; Sutikno, Sigit; Yusa, Muhamad; Rinaldi, Rinaldi; Yamamoto, Koichi
Journal of Degraded and Mining Lands Management Vol. 13 No. 1 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.131.9329

Abstract

In geotechnical engineering, professional actions and expert judgment are often essential in soil investigation methods. In lowland and coastal areas, expansive, fine-grained soils and sandy sedimentation lead to reduced bearing capacity, posing significant challenges for sustainable infrastructure development on marginal and degraded lands. Such conditions are prevalent in post-mining or naturally poor coastal environments, necessitating cost-effective and rapid assessment tools. This study modeled a clayey sand mixture using bentonite and kaolin as fine fractions, which exhibit expansive behavior and poor gradation, simulating worst-case geotechnically degraded subgrades. The mechanical behavior of the soil was evaluated through modified compaction, using the CBR test and CPT test as bearing capacity parameters. Soil mixtures were simulated with sand fractions ?65% and bentonite-kaolin compositions with ?50% bentonite. Compaction was modeled using variations in energy compaction and water content under conditions below the maximum dry density. CBR prediction was conducted using Qc as the primary predictor and dry density as a supporting predictor. A hybrid stepwise regression analysis in the         Z-score scale identified positively correlated predictors: +3.00 (Qc), +0.55 (?dry), and +1.28 (Qc ?dry interaction). The regression model showed strong statistical performance with R² = 0.84 and high significance with the lowest p-values. The resulting regression equation offers an applicable approach to rapidly evaluate the bearing capacity of subgrade soils in degraded coastal or marginal conditions, thereby facilitating geotechnical engineering design and initial site assessment crucial for land management and rehabilitation actions.
Vegetation Structure and Species Composition Along a Canal-Distance Gradient Across Different Peatland Land Use Types Silviana, Sinta Haryati; Saharjo, Bambang H.; Sutikno, Sigit; Vetrita, Yenni
HAYATI Journal of Biosciences Vol. 33 No. 3 (2026): May 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.3.694-703

Abstract

Tropical peatlands are critical ecosystems that provide habitat for biodiversity and store large amounts of carbon, yet they are increasingly degraded due to land-use conversion, drainage, and recurrent fires. This study examined vegetation structure and species composition along a canal-distance gradient (10-350 m across three peatland land-use types: rubber plantation, secondary forest, and burned peatland. Vegetation surveys were conducted using 40 nested plots covering four growth strata (trees, poles, saplings/shrubs, and seedlings/herbs). Community structure was analyzed using the Importance Value Index (IVI), Shannon–Wiener diversity index (H′), Margalef’s richness index (DMg), Pielou’s evenness index (E), and Simpson’s dominance index (C). Differences in environmental parameters among land-use types were tested using one-way ANOVA (p<0.05). Secondary forests exhibited the highest species richness and diversity with balanced structural complexity, whereas rubber plantations showed simplified communities dominated by Hevea brasiliensis. Burned peatlands were characterized by pioneer tree species and dense fern understorey, indicating successional arrest. Secondary forests had higher biodiversity than rubber plantations, which in turn had higher biodiversity than burned peatlands. These findings highlight that land-use intensity, canal proximity, and fire history jointly regulate vegetation dynamics in tropical peatlands and highlight the importance of forest conservation, plantation diversification, and restoration through rewetting and enrichment planting.
Co-Authors ', Fitriani Achmad Noerkhaerin Putra Ade Mustika Martin Adri Patria Ganda Agus Ika Putra Ahmad Ade Kurniawan Ahmad Fauzi Ahmad Muhammad Ahmad Muhammad Ahmad Muhammad Ahmad Nawawi Ahmad Nurhuda Akhbar Putra Alkhair, Hafidz Almanna, Fajri Almasdi Syahza Aminuyati Andi Darmawan Andri Sulistyani Andy Hendri, MT, Andy Ari Sandhyavitri Ariani Kurnia, Ariani Arif Hidayatullah Arifudin Arifudin Aris Fadillah Asda Usradinda Askary, Muhammad Bambang H. Saharjo Bambang Sujatmoko Besri Nasrul Budisusanti, SPM Daly Riandi Defarian, Alvin Dewi , Novia Dewi, Dian Kharisma Diego Ariesta Lintano Dina Aulia Fitri Dwi Puspo Handoyo Dwi Puspo Handoyo, Dwi Puspo Dzaki Naufal Edi Kurniawan Eka Saputra Fauzi, Manyuk Febiola, Ollga Ferry Fatnanta Fian Syauqi Firdaus Firdaus Fitri Landari Fitriani Fitriani Frans Alfredo Hutapea Galuh Rio Harto, Galuh Rio Genta Putra Adietama Gina Khusnul Khotimah Gunandar, Arifa Gunawan, Irvan Gustin, Silvie Welya Hadthya, Reinhart ' Hafiz Alfarisyi Hapsoh Hardi Daim Haris Gunawan Hendra Saputra Herli Fajri Hidayat, Muhammad Fikky Hilda Febrina Hugo Pratama Idwar, Idwar Ilham Ziaulhaq Ilvi Rahmi Amalia Indradi Wijatmiko Indratmo Soekarno Insan Ikhsan Irfan, Riza Irpan, Apdani Jailani Jailani Jeffi Annisa Junius Nainggolan Karunia, Ariani Kei Mizuno Keisuke Murakami Keisuke Murakami Khairijon Khairijon Koichi Yamamoto Koichi Yamamoto Koichi Yamamoto Koichi Yamamoto, Koichi Kusairi, Muhammad Lilianti Lilianti Lita Darmayanti Luh Putu Ratna Sundari Lyona, Vinka M Fadhil Nur Mairiza Mairiza Mandataris Mardhotillah, Mutia Marlaily Idris Martin, Ade Mustika Melani Humairoh Merian, Rena Dian Metananda, Arya Arismaya Michiko Hosobuchi Milka Novita Manalu Mitri Irianti Mohtar Anwar Monita Olivia Mubarak Mubarak Mubarak Mubarak Mubarak Mudjiatko Mudjiatko Muhamad Yusa Muhammad Agung Pribadi Muhammad Fikky Hidayat Muhammad Kusairi Muhammad Nur Fajri Muhammad Randy Alfath Muhammad Yusa Muhammad Yusa Muhammad Yusa Mutia Ananda Perdana Neneng Sari Nensi Niko Erdi Putra Nur Hidayati Nurul Qomar Nurul Qomar Okta Karneli, Okta Osamu Kozan Panji Tegar Aji Pratama, Deni Pratama, Fernando putri, Novalin Putri, Tasha Ramadhery Radith Mahatma Rafit Mahendra Rahma Setya Linggasari, Rahma Setya Rahmatul Irfan Rahmayati Aprillia Putri Randa Kurniawan Refri Fadillah Rena Dian Merian Reski Daini Ramawilis Reza Ahmad Fadhli Reza Ahmad Fadhli, Reza Ahmad Rifandri, Danus Rifardi Rinaldi Rinaldi Rinaldi Rinaldi Rinaldi Rinaldi Rizki Rianda Putra Rizki Sahputra Romie Jhonnerie Roza Wahyuni S Siswanto Saldanela Saldanela Satibi, Syawal Seno Andri Setia Dewi Nurza Silviana, Sinta Haryati Sinta Afdeni Soewignjo Agus Nugroho Swary Aristi Syahrul Ramadhani Syamsul Arifin Syofiatul Safitri Syuhaya Wanisakdiah Teuku Ichsan Nurrady Theo Hasido Silalahi Tina Andriani Wahyu Frisnel Wardani, Khusnul Setia Wawan Gunawan Widya Ayu Safitri Wikrine Teriyoko Wiliya Wiliya Wiliya, Wiliya Yearni Yudika Friniati Putri Yenni Vetrita, Yenni Yesy Dian Permatasari, Yesy Dian Yogi Guntara Yohanna Lilis H Yosafat Sijabat Yuli Hendra Yundari, Yundari Zuli Laili Isnaini Zulkarnain Yusuf Zulkifli Zulkifli