Journal La Lifesci

Managing Carbon Emission in X Supermarket at one of Mining Company in Papua: A Case Study for Better Solution

2026-02-04T20:54:33+07:00

The economic calculation of carbon emissions from a human activity is very helpful to analyze the emissions produced from waste generation and electrical energy consumption. The waste produced in activities at supermarket X has been sorted and separated from organic and non-organic waste. The electrical energy consumed by supermarket X is also large, but in the financing it is all paid by PT Y as the supermarket's shelter. The awareness of consumers and employees of the supermarket is also high regarding cleanliness and waste disposal.

Study on the Use of Post-Mining Reclaimed Land for the Development of Horticulture-Based Green Infrastructure: A Case Study

2026-02-05T10:55:03+07:00

Large-scale mining activities are often not balanced with adequate post-mining management, causing post-mining land to become abandoned and environmental degradation. This study aims to evaluate the potential and opportunities for the implementation of post-mining land reclamation through the development of horticulture-based green infrastructure at PT Radik Jaya Indonesia, Kendal Regency. Identification of land conditions including soil and water characteristics, land cover, and the level of disaster vulnerability is carried out to support sustainable green infrastructure development planning. Research data was obtained through field surveys that included observations, measurements, and interviews, as well as laboratory analysis of soil quality. The collected data was analyzed using the scoring method to determine the level of land suitability in the development of green infrastructure. In addition, SWOT analysis is used to identify internal and external factors that affect the development of green infrastructure at the research site. The results of the study show that the development of horticulture-based green infrastructure has considerable potential as a component to support environmental sustainability as well as improve the community's economy. However, the development still faces a number of challenges, especially related to policy changes and the management of locations that are still actively used for mining activities. The resulting recommendations are expected to be the basis for planning and managing post-mining land reclamation in a sustainable manner, as well as contributing to environmental conservation and improving the economic conditions of the community in the research area.

Evaluation of Reclamation Activities on Post-Mining Land

2026-02-05T13:46:54+07:00

This study aims to evaluate reclamation activities on the post-mining land of PT Bumi Sentosa Jaya in Boedingi Village, Lasolo District, North Konawe Regency, Southeast Sulawesi Province. Mining activities carried out in the area have caused environmental degradation, particularly in soil quality and vegetation. Therefore, reclamation activities, including revegetation, need to be carried out to restore the ecological function of the land. This study uses the Normalized Difference Vegetation Index (NDVI) analysis method to evaluate the success rate of revegetation as an indicator of vegetation health and density. In addition, an analysis was conducted on the reclamation plan and the estimated costs required. The data used in this study consisted of Sentinel-2 satellite images and drone photos to obtain an accurate picture of topographical changes and vegetation growth. The results showed that the reclamation activities carried out by PT Bumi Sentosa Jaya succeeded in increasing vegetation density in the reclaimed area. The area of land that has been reclaimed reached 11.90 ha in the period from 2023 to 2024, with the success of revegetation measurable through an increase in NDVI values. The reclamation plan, which includes land preparation, planting of cover crops and pioneer plants, and plant maintenance, has been implemented in accordance with established standards. This study is expected to contribute to the development of reclamation and revegetation techniques in mining areas, as well as provide recommendations for companies and policy makers to improve the success of future reclamation activities.

Growth Response of Solanum melongena L. with Fly Ash-Bottom Ash Combination Planting Media and Compost Fertiliser

2026-02-05T14:00:46+07:00

The increase in coal combustion waste such as fly ash and bottom ash (FABA) has encouraged its use as a soil conditioner to support sustainable agriculture. This study aims to determine the vegetative growth response of Solanum melongena L. to a combination of FABA and compost as a planting medium. The study was conducted from June to October [2025] at the Experimental Garden using a completely randomised design (CRD) consisting of six treatments and four replicates, namely T0 = soil (control), T1 = soil 100% compost, T2 = soil compost 75% + FABA 25%, T3 = soil compost 50% + FABA 50%, T4 = soil compost 25% + FABA 75%, and P5 = soil FABA 100%. The parameters observed included plant height, stem diameter, and number of leaves at 6-10 weeks after planting. The data were analyzed using ANOVA and followed by Duncan's test and BNT at a 5% level. The results showed that the combination of growing media had a significant effect on all vegetative growth parameters. The best treatments were T1 (100% compost) and T2 (75% compost-25% FABA) with plant heights of 15.9 cm and 11 cm, respectively, stem diameters of 5.8 mm, and 12.3 and 10.5 leaves, respectively. These findings demonstrate a practical, environmentally friendly method to improve crop growth and manage waste sustainably

The Impact of Nickel Mining Activities on Watershed Hydrology and Coastal Sedimentation

2026-02-05T14:58:46+07:00

growing rapidly and have the potential to put pressure on the hydrological system of the Watershed (DAS) and the dynamics of sedimentation in coastal areas. The applied open-pit mining system causes extensive land clearing and reduced vegetation cover, which can increase surface runoff and soil erosion. This study aims to analyze the spatial relationship between nickel mining land clearing, watershed hydrological response, and coastal sedimentation levels during the period 2016–2025. The data used are multi- temporal Sentinel-2 Level-2A satellite images analyzed using the Normalized Difference Vegetation Index (NDVI) to identify the condition of mining land clearing and the Normalized Difference Turbidity Index (NDTI) to represent the level of sedimentation and turbidity of coastal waters. Spatial analysis was carried out based on watershed units to examine the upstream–downstream relationship between the intensity of mining land clearing and sedimentation responses in the estuarine zone. The results show that watersheds with a dominant low NDVI value tend to experience increased surface runoff and potential soil erosion, which in turn contributes to increased coastal sedimentation as indicated by relatively high NDTI values. These findings confirm a strong link between land cover changes due to nickel mining activities, watershed hydrological responses, and coastal sedimentation intensity. This research emphasizes the importance of a watershed-based approach in nickel mining environmental management and sedimentation impact mitigation efforts to maintain the sustainability of coastal ecosystems.