Ground water hydrochemical characteristics: seawater intruded area in eastern and southern coast of Laizhou Bay

Eastern and southern coastal zones of Laizhou Bay are the most representative seawater intruded areas in the world, with two intrusion sources of contemporary seawater and paleobrine. In order to reveal the complicated hydrochemical changing process and the mechanism of fresh groundwater being polluted by saltwater, we conducted long-term observation and hydrochemical analysis at four observing sections of typical salt-fresh water transitional zone. The study indicates that seawater and brine intrusion processes have different hydrochemical features, and that ion exchange and adsorption actions between water and aquifer produce great influence on the intrusion.

浅析莱州湾东部近岸海域人工鱼礁建设

论文分析了莱州湾渔业资源、生态环境及国内外人工鱼礁发展的现状。根据莱州湾近岸海域人工鱼礁试验区主要经济生物资源分布的水下调查结果,发现人工鱼礁对刺参、褶牡蛎、脉红螺等经济种类具有明显的诱集效果,起到了资源增殖的作用,认为在莱州湾东部近岸海域规划建设人工鱼礁切实可行,可实现良好的经济效益、生态效益和社会效益,将有效地改善莱州湾渔业资源衰退及生态环境恶化的现状,并从规划、资金、立法、功能整合、科研、宣传等方面提出相关保障性建议,确保莱州湾渔业可持续发展。

莱州湾东部近岸海域氮、磷污染状况研究

依据2016—2020年5、8、10月对莱州湾东部海域水环境调查资料,对该海域中无机氮、活性磷酸盐污染现状进行分析和评价。结果表明,该海域内无机氮具有明显的季节性变化,8月监测结果明显低于5月和10月;由于该海域属于水体交换不良的海域和多方面的影响,5月和10月各站位监测的浓度值各有高低;该海域近岸监测站位活性磷酸盐浓度波动性明显高于莱州湾中部的监测站位,并且该海域活性磷酸盐浓度与降水量成正比,说明地表径流对该海域活性磷酸盐有明显影响。