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Journal : Jurnal Agriment

Estimation of Understorey Carbon Stocks in Post-Mining Land: A Case Study of One-Year Revegetation at PT Insani Baraperkasa Site Loa Janan, East Kalimantan Kiamah Fathirizki Agsa Kamarati; Agus Wiramsya Oscar; Pandhu Rochman Suosa Putra; Adnan Putra Pratama; Christine Elia Benedicta; Adelia Juli Kardika
JURNAL AGRIMENT Vol. 10 No. 1 (2025): Juni 2025
Publisher : Politeknik Pertanian Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/jurnalagriment.v10i1.3368

Abstract

Post-mining land rehabilitation is an important strategy to mitigate climate change and conserve tropical ecosystems. Surface mining activities in East Kalimantan have caused ecological degradation and the release of carbon stored in vegetation and soils. Revegetation has been widely practiced as the main approach to restore ecosystem functions, including initial carbon accumulation by understory plants. This study aims to estimate the carbon stock of the understory on post-mining land that has undergone revegetation for one year at the PT Insani Baraperkasa site in Loa Janan, East Kalimantan. The method used was destructive sampling of understory biomass from 10 plots measuring 5 m x 5 m, each with subplots measuring 0.5 m x 0.5 m. Biomass samples were dried and converted to carbon. The results showed an average carbon stock of 1.26 tons/ha. These results suggest that understorey vegetation plays an important role in early stage carbon recovery on post-mining land. Understory carbon monitoring can be an effective early indicator to measure the success of ecosystem restoration. Keywords: revegetation, understorey, post-mining, carbon
Land Suitability Study For Oil Palm Plantations On The Politani Samarinda Oil Palm Experimental Garden Land Laode Muh Asdiq Hamsin Ramadan; Kiamah Fathirizki Agsa Kamarati; Erna Rositah; Nurmaranti Alim
JURNAL AGRIMENT Vol. 10 No. 1 (2025): Juni 2025
Publisher : Politeknik Pertanian Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/jurnalagriment.v10i1.3370

Abstract

In order to achieve optimal production, oil palm plants necessitate adequate conditions that are in balance with the intended growth requirements and the land conditions of the environment in which these plants are grown. This study aims to determine the land suitability classfication and \limiting factors for oil palm plants in the Politani Samarinda oil palm experimental plantation. This study uses a quantitative descriptive methoddology based on in field observations and literature reviews. Data obtained from field observations and literature reviews is classified depending on land characteristics. The data grouping resulted are tabulated and compared with the growth growing requirements for oil palm plants. According to the results of the semi-detailed land suitability analysis for oil palm plants in the Politani Samarinda oil palm experimental plantation. The Politani Samarinda oil palm experimental plantation has limited land suitability (S3) with soil depth as the limiting factor of rooting media (rc).