Assessment of heavy metals and nutrients availability in oil palm plantation effected by bauxite mining using geostatistical and multivariate analyses

Zulkifli, Mazidah and A, Amalyn and Muhamad Tajudin, Nur Shuhada and Miskon, Mohd Fuad and Faudzi, Fikriah and Mohamad Anuar, Izzuddin (2022) Assessment of heavy metals and nutrients availability in oil palm plantation effected by bauxite mining using geostatistical and multivariate analyses. In: 11th IGRSM International Conference and Exhibition on Geospatial and Remote Sensing, IGRSM 2022, 7- 9 March 2022, Virtual.

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Abstract

The study aimed at evaluation of soil heavy metals in oil palm plantation and selected nutrients availability effected by mining. It was investigated using multivariate and geostatistical analyses followed by assessment using environmental indices. Samples were collected from both mining and oil palm cultivated area, prepared, and analyzed using ICPMS. Semi-variogram and kriging were done by using GS+ and ArcGIS 10.8, respectively. Content of Cu, Cr and Zn were higher compared to the Dutch target values and the 95% ‘Investigation Levels’ determined for Malaysia soil, while Pb showed a lower value. Analysis of Principal Component suggested that the heavy metals were from one source of contamination, particularly the mining activities and long-term agricultural practices. Geostatistics analyses revealed that Zn, Cu, Pb and Fe confront to a strong spatial dependence structure and in line with multivariate and statistical analysis, except for Cr, which had a moderate spatial dependence. Geoaccumulation Index demonstrated contamination occurred in the order of Cr>Cu>Fe>Zn>Ni>Pb. The heavy metals contamination has impacted the micronutrients contents as lower K, Ca and Mg were observed. These findings highlight that combining multivariate and geostatistical analysis can be valuable tools for assessing environmental contamination.

Item Type:	Conference or Workshop Item (Plenary Papers)
Subjects:	S Agriculture > S Agriculture (General) S Agriculture > S Agriculture (General) > S494.5.S86 Sustainable agriculture
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science Kulliyyah of Science > Department of Marine Science Kulliyyah of Science > Department of Plant Science Kulliyyah of Science > Institute of Oceanography and Maritime Studies
Depositing User:	Nur Shuhada bt Muhamada Tajudin
Date Deposited:	02 Sep 2022 08:33
Last Modified:	02 Sep 2022 09:00
URI:	http://irep.iium.edu.my/id/eprint/99784

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