ASSESSING DEGRADATIVE EFFECTS OF OPENCAST HYDRAULYC TIN MINING ON SOIL QUALITY ON BANGKA ISLAND, INDONESIA

Sabaruddin, Sabaruddin (2025) ASSESSING DEGRADATIVE EFFECTS OF OPENCAST HYDRAULYC TIN MINING ON SOIL QUALITY ON BANGKA ISLAND, INDONESIA. Lamd Degradation and Management. 0-0. (Unpublished)

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Abstract

Tin mining on Bangka Island, Indonesia boosts regional economy but brings social and environmental issues. This study assessed soil degradation (SDS) in tin-mining areas using a Relative Frequency of Soil Degradation (RFSD) score. We selected a minimum dataset on landscape and soil characteristics for this assessment. Converting the agroforestry fields (CSs) into the tin mining areas (ATMAs) significantly reduced plant species, vegetation coverage, and solum thickness (P < 0.01), while increasing surface rockiness. The open-pit hydraulic tin mining significantly affected soil physical characteristics (SPCs) as well as soil chemical and biological characteristics (SCBCs). Changes in landscape attributes, SPCs, and SCBCs led to varying levels of soil degradation at study sites. RFSD values ranged from 80% to 100% in all ATMAs, resulting in a total RFSD score of 32, categorizing the SDS as heavily degraded. The lack of variations in the SDS across the ATMAs indicated similar pressures from tin mining activities. In contrast, the RFSD values at the CSs ranged from 0% to 100%, resulting in a total RFSD score of 2 to 14, categorizing the SDS as slightly degraded. The low RFSD values (0% to 50%) and corresponding low total scores (2 to 14) indicated relatively undisturbed soil with optimal landscape and favorable conditions. However, elevated total RFSD scores were observed for four specific indicators at some CS locations: soil fraction (sf), total porosity (tp), soil permeability (spm), and soil acidity (sa), pointing to ongoing soil disturbances despite being designed as AF systems. These findings highlight the complexities involved in the soil degradation processes within systems intended for sustainability.

Item Type:	Article
Subjects:	S Agriculture > S Agriculture (General) > S590-599.9 Soils. Soil science. Including soil surveys, soil chemistry, soil structure, soil-plant relationships
Divisions:	05-Faculty of Agriculture > 54294-Soil Science (S1)
Depositing User:	Ph.D. Sabaruddin Kadir
Date Deposited:	08 Aug 2025 04:32
Last Modified:	08 Aug 2025 04:32
URI:	http://repository.unsri.ac.id/id/eprint/180667

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