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All Journal Cannarium (Jurnal Ilmu-ilmu Pertanian) Techno: Jurnal Penelitian Journal of Rural Indonesia Journal of Degraded and Mining Lands Management SAINTIFIK@ : Jurnal Pendidikan MIPA Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Pengabdian Masyarakat Khatulistiwa Jurnal Pengabdian kepada Masyarakat Jurnal Abdimas Bina Bangsa Abdimas Awang Long: Jurnal Pengabdian dan Pemberdayaan Masyarakat Agrikan: Jurnal Agribisnis Perikanan BARAKATI: Journal of Community Service
Mardiyani Sidayat
Program Studi Agribisnis, Fakultas Pertanian, Universitas Khairun
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Public Health Social Sciences Other

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Assessing heavy metal contamination and soil fertility in degraded farmland adjacent to nickel mining: Pathway towards sustainable land management in Halmahera Region, Indonesia Ishak, Lily; Teapon, Amiruddin; Subur, Riyadi; Armaijn, Liasari; Sidayat, Mardiyani; Abdul Rachman, Idris; Ladjinga, Erwin
Journal of Degraded and Mining Lands Management Vol. 13 No. 3 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.133.10491

Abstract

A continuous decline in crop yields in the Halmahera region of Indonesia, has been attributed to potential soil contamination by heavy metals from mining activities. Yet, the extent to which such contamination directly drives farmland degradation in this region remains undercover. This study aims to quantify the concentration and spatial distribution of selected heavy metals, evaluate their ecological risks, assess soil fertility in the affected areas, and propose directions on future research for sustainable land management (SLM). Sixteen soil samples were collected and analyzed for physicochemical properties and concentrations of Fe, Ni, As, Cd, Co, and Hg. The results indicates that Fe exhibited the highest concentration (11,894 mg kg?ยน), whereas Hg was negligible. Strong positive correlations and similar spatial distribution patterns were observed among Fe, Ni, and Co, which distincted from those of As and Cd. The pollution load index revealed moderate contamination for Fe and low contamination for other metals, while geoaccumulation index values ranged from low to moderate, reflecting contributions from both natural and anthropogenic sources. Ecological risk assessment indicated a low risk level. Additionally, soil fertility was considered low, characterized by reduced organic carbon, nitrogen, potassium, cation exchange capacity, and base saturation. Findings of this study provide a crucial foundation for future research to develop a conceptual framework for SLM that supports farmland restoration, improves soil health, increases crop yields and ecosystem services, and enhances the knowledge and economic benefits of local communities in this region.
Co-Authors Abdul Rachman, Idris Adriani Adriani amiruddin teapon Armaijn, Liasari Ashwath, Nanjappa Baguna, Firlawanti Djumadil, Nurdiyanawati Eka Kusuma Dewi Eka Kusuma Dewi Fatmawati, Mila Fatmawaty Kaddas Haris Mahmud Herman Darwis Ishak, Lily Kaddas, Fatmawati Kadir Lahati, Betty karmila ibrahim Khairun Annisa Khairun Annisa Ladjinga, Erwin Mila Fatmawati NANJAPPA ASHWATH Natal Basuki Natal Basuki Nursamsi Nursamsi Nursamsi, Nursamsi Reginawanti Hindersah Riyadi Subur, Riyadi Siti Nurjannah Suhardi Suhardi Suhardi Suleyman Suleyman Syahroni Syahroni Syahroni Syahroni