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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?¹), 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.
Clinical Symptoms of Cholelithiasis and Abdominal Ultrasound Findings in the Radiology Installation of RSD Dewi Darmayanti; Liasari Armaijn; Nani Supriyatni
Indonesian Journal of Global Health Research Vol 7 No 2 (2025): Indonesian Journal of Global Health Research
Publisher : GLOBAL HEALTH SCIENCE GROUP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37287/ijghr.v7i2.5501

Abstract

Cholelithiasis is one of the main causes of abdominal pain morbidity worldwide. The prevalence of cholelithiasis in developed countries is around 10-15% of the adult population, while in Asian countries the epidemiology of cholelithiasis ranges from 3-10%, with the prevalence of cholesterol cholelithiasis. This study aims to determine the relationship between clinical symptoms of cholelithiasis and abdominal USG findings at the radiology installation of Tidore Islands City Hospital. Methods: The type of research is observational with a cross-sectional study design. The research was conducted at the Radiology Installation of RSD Kota Tidore Kepulauan. The research sample consisted of 104 patients, with a total sampling method. Data were collected using secondary data obtained from the medical records of patients showing clinical symptoms of cholelithiasis from January to December 2023. data analysis used the Fisher’s exact test statistical method. Results and Discussions: The results of the study showed that the characteristics of patients aged 46-65 years were 50 people (48.1%), female gender was 66 people (63.5%), the largest patient clinical was cholelithiasis as many as 98 people (94.2%), the largest patient ultrasound findings were cholelithiasis as many as 98 people (94.2%), the results of the correlation between clinical cholelithiasis and ultrasound findings showed that clinical cholelithiasis with ultrasound findings of cholelithiasis was the most with a total of 95 people. The results of the Fisher's exact test obtained a p value = 0.002, which means that there is a correlation between clinical cholelithiasis and ultrasound findings of cholelithiasis.
Study of Coastal Community Health in North Maluku in the Utilization of TOGA Liasari Armaijn; Nur Upik En Masrika; Amran Nur; Ismail Rahman; Muhammad Fakhrur Rajih; Abdul Hamid Siragih
SAINTIFIK@: Jurnal Pendidikan MIPA Vol 11 No 1 (2026): SAINTIFIK@: Jurnal Pendidikan MIPA EDISI MARET 2026
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/saintifik.v11i1.10951

Abstract

Background: This study aims to examine the profile of Family Medicinal Plant (Tanaman Obat Kelaurga (TOGA) utilization among coastal communities on Hiri and Guaeria Islands as part of local wisdom-based health improvement efforts. Method: The study employed a mixed methods design involving 210 respondents. Quantitative data were obtained through questionnaires regarding knowledge, attitudes, and practices regarding TOGA utilization, while qualitative data were obtained through in-depth interviews and observations of medicinal plant processing and use practices in households. The results indicate that community knowledge of TOGA is in the fair category (53%), with an average score of 2.13. The community is generally familiar with several types of medicinal plants, such as ginger, turmeric, lemongrass, and betel leaf, for minor treatments. However, utilization practices remain limited, particularly in terms of sustainable processing and maintenance of medicinal plants. The main obstacles include limited land, knowledge of formulations, and lack of support from health workers. Conclusion: Overall, TOGA in coastal areas still has significant potential for development as part of a health promotion strategy and the resilience of traditional medicine communities. Community-based interventions are needed to increase community capacity in sustainable TOGA cultivation, processing, and utilization.