Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia.
Institute of Oceanography and Environment, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia.
Mar Pollut Bull. 2024 Dec;209(Pt A):117102. doi: 10.1016/j.marpolbul.2024.117102. Epub 2024 Oct 14.
Pulau Kapas is tropical island which dominantly depends on land-supplied and groundwater for freshwater sources. The groundwater quality was monitored monthly, to identify the possible factors effecting the groundwater quality throughout May to October 2022. Physico-chemical parameters were in-situ measured and groundwater were collected for nutrients analysis in the laboratory. The concentration of ammonium, phosphate, nitrite, and nitrate were in the range of 0.07-1.08 mg/L, 0.00-0.06 mg/L, BDL-18 × 10 mg/L and 0.01-0.19 mg/L, respectively. The cluster and principal component analysis unveiled the seawater intrusion for freshwater needs was the dominant factor affecting the groundwater. Followed by the dissolution of soil particles surrounds the groundwater table, and the surface run-off by rainfall. In conclusion, the groundwater was affected by geogenic factors as it was not extensively extracted due to movement control order of Covid-19 event. This has provided significant insight for a better management plan in sustaining the groundwater of Pulau Kapas.
卡帕斯岛是一个热带岛屿，主要依赖陆地供应和地下水作为淡水来源。监测了每月的地下水质量，以确定 2022 年 5 月至 10 月期间影响地下水质量的可能因素。现场测量了理化参数，并采集地下水进行实验室养分分析。铵、磷酸盐、亚硝酸盐和硝酸盐的浓度分别在 0.07-1.08 mg/L、0.00-0.06 mg/L、BDL-18×10mg/L 和 0.01-0.19 mg/L 范围内。聚类和主成分分析揭示了为满足淡水需求而发生的海水入侵是影响地下水的主要因素。其次是地下水周围土壤颗粒的溶解，以及降雨引起的地表径流。总之，地下水受到地球成因因素的影响，由于新冠疫情期间实施的行动管制令，地下水并未被大量开采。这为制定更好的管理计划以维持卡帕斯岛的地下水提供了重要的见解。
