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An Ecological Risk Assessment of Sediments in a Developing Environment—Batticaloa Lagoon, Sri Lanka
Journal of Marine Science and Engineering ( IF 2.7 ) Pub Date : 2021-01-13 , DOI: 10.3390/jmse9010073
Madurya Adikaram , Amarasooriya Pitawala , Hiroaki Ishiga , Daham Jayawardana , Carla M. Eichler

The land-sea interface is considered as a threatening environment due to anthropogenic development activities. Unplanned developments can cause effects on important ecosystems, water and human health as well. In this study, the influence of rapid regional development on the accumulation of trace elements to the sediments of an important ecosystem, Batticaloa lagoon, Sri Lanka was examined. Surface sediment pollution status and ecological risk was compared with that of the recent sedimentary history of about 1 m depth. Sediment core samples were collected and analyzed for grain size, organic matter and carbonate contents and trace elements (As, Pb, Zn, Cu, Ni and Cr) by the X-Ray Fluorescence (XRF) technique. The chemical results of core samples and recently published data of surface sediments of the same project were evaluated by pollution load index (PLI), potential ecological risk index (PERI) and sediment quality guidelines (SQG). Except for Cr, all other elements in cores show lower concentrations than the SQGs confirming the high Cr contents as recorded in the most of other Sri Lankan sediments. The sediment cores indicate an unpolluted, low ecological risk sedimentary history for all core sampling locations, whereas most of the surface sediments of the lagoon are less polluted with low potential ecological risk. Present anthropogenic practices and illiteracy of this rapid developing region can damage the green environment and hence environmental management planning is suggested for a sustainable future.

中文翻译:

发育环境中沉积物的生态风险评估—斯里兰卡Batticaloa泻湖

由于人为开发活动,陆海界面被认为是威胁环境。计划外的发展也会对重要的生态系统,水和人类健康造成影响。在这项研究中,研究了区域快速发展对重要生态系统斯里兰卡拜蒂克洛泻湖的沉积物中微量元素积累的影响。将地表沉积物污染状况和生态风险与最近约1 m深度的沉积历史进行了比较。收集沉积物岩心样品,并通过X射线荧光(XRF)技术分析其粒度,有机物,碳酸盐含量和微量元素(As,Pb,Zn,Cu,Ni和Cr)。通过污染负荷指数(PLI),潜在生态风险指数(PERI)和沉积物质量准则(SQG)对同一项目的核心样品的化学结果和最近发表的表面沉积物数据进行了评估。除Cr外,岩心中所有其他元素的浓度均低于SQG,这证实了斯里兰卡其他大多数沉积物中所记录的高Cr含量。沉积物岩心表明所有岩心采样位置的污染历史都没有污染,低生态风险,而泻湖的大多数表层沉积物污染程度较低,潜在生态风险也很低。该快速发展地区目前的人为做法和文盲可能会破坏绿色环境,因此建议为可持续的未来制定环境管理计划。潜在生态风险指数(PERI)和沉积物质量指南(SQG)。除Cr外,岩心中所有其他元素的浓度均低于SQG,这证实了斯里兰卡其他大多数沉积物中所记录的高Cr含量。沉积物岩心表明所有岩心采样位置的污染历史都没有污染,低生态风险,而泻湖的大多数表层沉积物污染程度较低,潜在生态风险也很低。该快速发展地区目前的人为做法和文盲可能会破坏绿色环境,因此建议为可持续的未来制定环境管理计划。潜在生态风险指数(PERI)和沉积物质量指南(SQG)。除Cr外,岩心中所有其他元素的浓度均低于SQG,这证实了斯里兰卡其他大多数沉积物中所记录的高Cr含量。沉积物岩心表明所有岩心采样位置的污染历史都没有污染,低生态风险,而泻湖的大多数表层沉积物污染程度较低,潜在生态风险也很低。该快速发展地区目前的人为做法和文盲可能会破坏绿色环境,因此建议为可持续的未来制定环境管理计划。岩心中所有其他元素的浓度均低于SQG,这证实了斯里兰卡其他大多数沉积物中所记录的高Cr含量。沉积物岩心表明所有岩心采样位置的污染历史都没有污染,低生态风险,而泻湖的大多数表层沉积物污染程度较低,潜在生态风险也很低。该快速发展地区目前的人为做法和文盲可能会破坏绿色环境,因此建议为可持续的未来制定环境管理计划。岩心中所有其他元素的浓度均低于SQG,这证实了斯里兰卡其他大多数沉积物中所记录的高Cr含量。沉积物岩心表明所有岩心采样位置的污染历史都没有污染,低生态风险,而泻湖的大多数表层沉积物污染程度较低,潜在生态风险也很低。该快速发展地区目前的人为做法和文盲可能会破坏绿色环境,因此建议为可持续的未来制定环境管理计划。
更新日期:2021-01-13
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