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Submarine groundwater discharge and benthic biogeochemical zonation in the Huanghe River Estuary

Acta Oceanologica Sinica 2022年第1期41卷 11-20页

作者： Guangquan Chen Bochao xu Shibin Zhao Disong Yang William C.Burnett Shaobo Diao Maosheng Gao xingyong xu Lisha Wang Key Laboratory of Coastal Science and Integrated Management First Institute of OceanographyMinistry of Natural ResourcesQingdao 266061China Laboratory for Marine Geology Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Frontiers Science Center for Deep Ocean Multispheres and Earth System/Key Laboratory of Marine Chemistry Theory and Technology of Ministry of Education Ocean University of ChinaQingdao 266100China Marine Ecology and Environmental Science Laboratory Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China College of Chemistry and Chemical Engineering Ocean University of ChinaQingdao 266100China Department of Earth Ocean and Atmospheric ScienceFlorida State UniversityTallahassee 32306USA Qingdao Institute of Marine Geology China Geological SurveyQingdao 266071China

Submarine groundwater discharge(SGD)has received increasing attention by studies on coastal areas;however,its effects on biogeochemical zonation have not been investigated to *** Huanghe River Estuary(HRE)is a world class river estuary with high turbidity,and heavy human *** study investigated how SGD is related to the benthic biogeochemistry of the *** on the distribution of several parameters(e.g.,salinity,temperature,dissolved oxygen(DO)levels,p H,radium isotopes,and nutrients),the HRE was subdivided into six different zones,and the SGD fluxes within each zone were quantified and *** highest SGD flux was found in the northwest nearshore zone,where it was more than one order of magnitude higher than in the offshore *** SGD resulted in low DO and p H,but high nutrient levels in the benthic boundary *** southeast nearshore zone was also characterized by high SGD flux,but benthic waters were more oxic because of the dominating inputs by the Huanghe *** data suggest that such a zonation would help to understand benthic biogeochemical *** SGD may not only contribute to the estuarine nutrient budget,but may also contribute to the formation of hypoxia and acidification.

关键词： SGD zonation benthic biogeochemistry radium isotopes Huanghe River Estuary

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Simulation of transport mechanism of radium isotopes in aquifer on the southern coast of Laizhou Bay

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海洋学报:英文版 2023年第8期42卷 40-48页

作者： Yancheng Wang Guangquan Chen Hongjun Yu xingyong xu Yinqiao Zou Wenqing Zhao Weitao Han Wenzhe Lyu Zhen Cui Runtian Ding Key Laboratory of Marine Geology and Metallogeny First Institute of OceanographyMinistry of Natural ResourcesQingdao 266061China Laboratory for Marine Geology Laoshan LaboratoryQingdao 266237China Fourth Institute of Oceanography Ministry of Natural ResourcesBeihai 536000China Weifang Institute of Marine Development Weifang 261041China State Key Laboratory of Estuarine and Coastal Research East China Normal UniversityShanghai 200241China Qingdao Hailukong Environmental Automatic-control Engineering Co. Ltd.Qingdao 266000China

Naturally occurring radium(^(223)Ra,^(224)Ra,^(226)Ra,and^(228)Ra)isotopes have been widely applied as geochemical tracers in marine environments,especially when estimating the submarine groundwater discharge(SGD).In this sense,the influencing factors and transport mechanism of radium isotope activity in aquifers can be key information for SGD *** work evaluates the adsorption/desorption behavior of^(224)Ra and^(226)Ra in the solid-liquid phase through a leaching experiment and analysis of field *** results suggested that radium isotope activity was positively correlated with salinity and grain size,in the case of abundant *** ion analysis,we found that the ions(Na^(+),Ca^(2+),Mg^(2+),and Ba^(2+))exchanged with radium isotopes in the process of transport.A 1-D reactive transport model was established to simulate the transport process of radium isotope in *** model successfully simulated the variation of radium isotope desorption activity with salinity and was subsequently verified in the *** study contributes to the understanding of the geochemical behavior of radium isotopes in aquifers and provides guidance for selecting a suitable groundwater endmember in SGD estimation.

关键词： radium adsorption/desorption behavior leaching experiment reactive transport model coastal aquifer Laizhou Bay

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Activation of the wnt/β-catenin/CYP1B1 pathway alleviates oxidative stress and protects the blood-brain barrier under cerebral ischemia/reperfusion conditions

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Neural Regeneration Research 2024年第7期19卷 1541-1547页

作者： xingyong Chen Nannan Yao Yanguang Mao Dongyun Xiao Yiyi Huang xu Zhang Yinzhou Wang Department of Neurology Fujian Provincial HospitalShengli Clinical Medical College of Fujian Medical UniversityFuzhouFujian ProvinceChina Department of Neurology Cangzhou Central HospitalCangzhouHebei ProvinceChina Fujian Academy of Medical Science FuzhouFujian ProvinceChina Key Testing Laboratory of Fujian Province FuzhouFujian ProvinceChina

Accumulating evidence suggests that oxidative stress and the Wnt/β-catenin pathway participate in stroke-induced disruption of the blood-brain ***,the potential links between them following ischemic stroke remain largely *** present study found that cerebral ischemia leads to oxidative stress and repression of the Wnt/β-catenin ***,Wnt/β-catenin pathway activation by the pharmacological inhibito r,TWS119,relieved oxidative stress,increased the levels of cytochrome P4501B1(CYP1B1)and tight junction-associated proteins(zonula occludens-1[ZO-1],occludin and claudin-5),as well as brain microvascular density in cerebral ischemia *** r,rat brain microvascular endothelial cells that underwent oxygen glucose deprivation/reoxygenation displayed intense oxidative stress,suppression of the Wnt/β-catenin pathway,aggravated cell apoptosis,downregulated CYP1B1and tight junction protein levels,and inhibited cell prolife ration and *** ofβ-catenin or knockdown ofβ-catenin and CYP1B1 genes in rat brain mic rovascular endothelial cells at least partly ameliorated or exacerbated these effects,*** addition,small interfering RNA-mediatedβ-catenin silencing decreased CYP1B1 expression,whereas CYP1B1 knoc kdown did not change the levels of glycogen synthase kinase 3β,Wnt-3a,andβ-catenin proteins in rat brain microvascular endothelial cells after oxygen glucose deprivatio n/***,the data suggest that CYP1B1 can be regulated by Wnt/β-catenin signaling,and activation of the Wnt/β-catenin/CYP1B1 pathway contributes to alleviation of oxidative stress,increased tight junction levels,and protection of the blood-brain barrier against ischemia/hypoxia-induced injury.

关键词： blood-brain barrier CYP1B1 oxidative stress oxygen glucose deprivation/reoxygenation tight junction vascular endothelial cells Wnt/β-catenin pathway β-catenin

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Paleoenvironmental changes during the late Quaternary as inferred from foraminifera assemblages in the Laizhou Bay

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Acta Oceanologica Sinica 2014年第10期33卷 10-18页

作者： YAO Jing YU Hongjun xu xingyong YI Liang CHEN Guangquan SU Qiao Key Laboratory of Marine Geology and Environment Institute of Oceanology Chinese Academy of Sciences Key Laboratory of Marine Sedimentology and Environmental Geology First Institute of OceanographyState Oceanic Administration University of Chinese Academy of Sciences State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences

Controlled by climate changes, there were three large-scale transgressions and regressions around the Bohai Sea during the late Quaternary, which were accepted by most geologists. However, a big controversy still exists about the time when the transgressions occurred separately. In order to find out the process of the paleoenvironmental changes around the Bohai Sea in the late Quaternary, the foraminifera assemblages from a new borehole Lz908 in the southern coast of the Laizhou Bay were studied, and then the transgressive strata were indentified. Combined with accelerator mass spectrometry radiocarbon 14C（AMS14C） and optically stimulated luminescence（OSL） ages, the occurrence time of these transgressions were re-determined. The result showed that three major large-scale transgressions occurred separately at the beginning of marine isotopic stage 7（MIS7）, the last interglacial period（MIS5） and the Holocene. In addition, a small-scale transgression occurred in the mid-MIS6, and the corresponding transgressive stratum was deposited. The transgressive deposition of MIS3 was also discovered in this study. However, the characteristics of the foraminifera indicated the environment during this period was colder than that in the MIS5. By comparison with the global sea-level changes, the paleoenvironmental changes around the Bohai Sea in the late Quaternary can be consistent with the global climate changes.

关键词： foraminifera assemblage late Quaternary environmental changes Laizhou Bay Bohai Sea

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Individual idea about the micro-invasive aspiration and drainage of intracranial hematoma

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Neural Regeneration Research 2007年第12期2卷 751-759页

作者： Zhouping Tang Feng xu xingyong Chen Xiangwu Meng Wei Hu Suiqiang Zhu Wei Wang Department of Neurology Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 Hubei Province China

AIM： This study aimed to expound the individual idea of micro-invasive surgery from pre-operative preparation, intra-operative processing and post-operative management. METHODS： Pre-operative preparation was improved by analyzing pathological factors and hematoma property, and considering patients＇ age, basic disease, blood pressure control, with persistent haemorrhagia/rehaemorrhagia or not, operative occasion choice, positioning and other procedures. In the surgery, positioner was used. Initial aspiration volume was cautiously controlled. After operation, vital signs of patients were kept stable by cautiously using hematoma liquefacient and combining with free radical scavenger. RESULTS： The core content of individual micro-invasive surgery was mainly to relieve intracranial pressure. Under the condition of sufficient pre-operative preparation known by patients＇ family members, precise positioning was determined and individual therapeutic regimen was made. Meanwhile, caution should be taken in hematoma aspiration. Liquefaction and drainage should be paid more attention, and complications were processed actively. CONCLUSION： During the process of micro-invasive evacuation of intracranial hematoma for treating cerebral hemorrhage, attention should be paid to analyzing cerebral hematoma etiology and pathophysiological mechanism, and individual idea should be considered in surgical treatment aiming at patients＇ concrete disease condition.

关键词： intracerebral hematoma individual micro-invasive aspiration and drainage of intracranial hematoma

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The color reflectance of marine-terrigenous deposits in LZ908 borehole in south coastal plain of the Laizhou Bay

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Acta Oceanologica Sinica 2011年第4期30卷 53-59页

作者： ZHAO Na xu xingyong YU Hongjun YAO Jing SU Qiao PENG Shuzhen Yantai Institute of Coastal Zone Research Chinese Academy of Sciences Yantai 264003 China Graduate University of Chinese Academy of Sciences Beijing 100049 China the First Institute of Oceanography State Oceanic Administration People＇s Republic of China Qingdao 266061 China Taishan University Taian 271021 China

Color measuring is characterized by high resolution,high efficiency,and low cost. The application becomes increasingly common for tracing sediment sources and climate variation. Borehole LZ908 in the south coastal plain of the Laizhou Bay in northeast China,was used,of which the top 54 m containing all marine facies was focused,to test the feasibility of colorimetry as a climate indi-cator using visible light reflectance spectra and L＊a＊b＊measurement results. The results show a good correction between lightness and calcium carbonate content in marine-terrigenous deposits;therefore,these deposits can be used as a proxy to study climate changes. Factor-analysis on the first derivative values of the raw visible light reflectance spectra produced three principal factors corresponding to goethite,organic matter,and hematite. Down hole variations in the three fac-tor scores,lightness,calcium carbonate content,and grain size were quite consistent. Moreover,high lightness and low factor scores in goethite,hematite,and organics indicated glacial regression deposits,while low lightness and high factor scores in goethite,hematite,and organics indicated interglacial transgression deposits.

关键词： coastal plain the Laizhou Bay visible light reflectance factor analysis L*a*b* lightness

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Effect of Tides on the Stratigraphic Resistance of the South Coast of the Laizhou Bay

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Journal of Water Resource and Protection 2017年第6期9卷 590-600页

作者： Qiao Su xingyong xu Wenquan Liu Guangquan Chen Tengfei Fu Key Laboratory of Marine Sedimentology and Environmental Geology First Institute of Oceanography State Oceanic Administration Qingdao China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and Technology Qingdao China

Seawater intrusion is a global environmental problem that is becoming increasingly severe with the overexploitation of underground freshwater in coastal regions and sea-level rise caused by global climate change. Although a series of achievements has been made on seawater intrusion, the role of tidal effects has not been fully revealed. In this paper, a typical case of tidal effects on seawater intrusion is provided. The high-density resistivity method was applied to the high-frequency continuous measurement of the stratigraphic resistance of the south coast of the Laizhou Bay, followed by the panel data analysis method. The results indicate that the formation resistivity in coastal area was affected by the tidal level significantly, particularly in the seawater intrusion channel. The effect of tide on the intensity distribution of formation resistivity was evaluated using this method. Because of the presence of a brine layer in the section, the trends of the tidal level effect on the formation resistivity in the left and right sides of the section were opposite, and the intensity of the effect increased sideways.

关键词： Seawater Intrusion Tidal the High-Density Resistivity Method Panel Data

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莱州湾海域石油烃时空分布特征及来源分析

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环境科学与技术 2022年第1期45卷 130-136页

作者：李俊峰胡琳慧徐兴永许泽昊吕浩然梁生康青岛科技大学海洋科学与生物工程学院山东青岛266042 自然资源部第四海洋研究所广西北海536007 中国海洋大学海洋化学理论与工程技术教育部重点实验室山东青岛266100 中国海洋大学化学化工学院山东青岛266100

文章根据2018年10月(秋季)、2019年5月(春季)和2019年8月(夏季)在莱州湾进行的3次入海污染物通量和海域污染分布的陆海同步精细调查,估算了莱州湾主要入海河流及排污口石油类污染物排放通量,分析了莱州湾海域不同季节石油烃时空分布及... 详细信息

文章根据2018年10月(秋季)、2019年5月(春季)和2019年8月(夏季)在莱州湾进行的3次入海污染物通量和海域污染分布的陆海同步精细调查,估算了莱州湾主要入海河流及排污口石油类污染物排放通量,分析了莱州湾海域不同季节石油烃时空分布及影响因素,结合石油烃中正构烷烃组分及构成等,探讨了莱州湾海域水体中石油烃的来源。结果表明,莱州湾石油类污染物与盐度成显著的负相关,高值区主要位于湾底部的小清河河口等入海通量分担率最高的陆源排放影响区域,且不同季节石油类污染物浓度均值与入海通量变化趋势一致,均呈现夏季>春季>秋季的特征,表明陆源排放是莱州湾海域石油烃污染物浓度时空分布的决定性因素。同时,船舶运输、渔业活动等海上污染源对海域石油污染的贡献也不容忽视。莱州湾表层海水中正构烷烃的碳数呈明显的“低碳数”和“高碳数”的双峰分布,且低碳数峰群具有明显的奇偶优势,主峰分别为n-C15和n-C18,表明该海域石油主要来源于水生生物和陆生植物,但局部海域受到明显的外源石油污染。

关键词：莱州湾表层海水石油烃分布特征盐度入海通量

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山东鲁山混合岩表面发现第四纪冰川剥蚀的直接证据——颤痕

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地质学报 2012年第3期86卷 514-521页

作者：吕洪波徐兴永易亮李萍中国石油大学地球科学与技术学院山东青岛266555 国家海洋局第一海洋研究所山东青岛266061

本文首次报道了在山东鲁山南坡山谷发现混合岩表面的颤痕。颤痕是冰川底部携带的岩石碎块在下伏基岩表面刮凿而形成的一系列弧形裂隙,颤痕的弧形突出方向与冰川运动方向一致,而裂隙也是向下游方向深入基岩内部,其中突出的中间部位裂隙最... 详细信息

本文首次报道了在山东鲁山南坡山谷发现混合岩表面的颤痕。颤痕是冰川底部携带的岩石碎块在下伏基岩表面刮凿而形成的一系列弧形裂隙,颤痕的弧形突出方向与冰川运动方向一致,而裂隙也是向下游方向深入基岩内部,其中突出的中间部位裂隙最深,向两端逐渐变浅直至消失。作者探讨了颤痕的形成机理,认为:颤痕相当于主剪切面上的伴生构造——R剪切面,在剖面上看就是一系列雁列式排列的R面,它不仅是冰川在基岩上运动留下的重要证据,而且还能指示冰体的运动方向。除了颤痕之外,在鲁山山麓还分布着大量的冰碛地貌:巨漂砾、冰碛堤等,在鲁山山脊上还见有典型的壶穴、冲刷槽等冰川融水侵蚀标志。这些标志与颤痕一起构成了强大的证据群,揭示了中国东部曾经发育过第四纪冰川的历史。中国东部是否发育过第四纪冰川?地学界已经争论了80多年,而颤痕的发现为进一步肯定中国东部存在第四纪冰川活动提供了最直接的证据。

关键词：山东鲁山混合岩第四纪冰川剥蚀颤痕

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莱州湾南岸土壤剖面盐分离子分异规律研究

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土壤学报 2014年第6期51卷 1213-1222页

作者：刘文全于洪军徐兴永国家海洋局第一海洋研究所山东青岛266061 国家深海基地管理中心山东青岛266061

莱州湾南岸地区受海水入侵影响盐渍化问题严重，土壤盐渍化是制约区域农业生产和发展的主要障碍因子。运用经典统计学和地统计学的方法，研究了莱州湾南岸地区土壤剖面盐分离子的空间分异规律。结果表明：土壤全盐含量随深度的增加而增... 详细信息

莱州湾南岸地区受海水入侵影响盐渍化问题严重，土壤盐渍化是制约区域农业生产和发展的主要障碍因子。运用经典统计学和地统计学的方法，研究了莱州湾南岸地区土壤剖面盐分离子的空间分异规律。结果表明：土壤全盐含量随深度的增加而增加，表现出底聚趋势；各层土壤盐分离子均表现中等和强烈的变异性；土壤盐分主要以NaCl和Na2SO4的形式存在；偏相关分析说明不同盐分离子间的相关性差异较大；聚类分析表明盐分离子主要分为三大类：K＋、Mg2 、Ca2 和SO42-为第一类，Na 单独组成第二类，Cl-则为第三类；除全盐含量在30～60cm具有中等空间自相关外，其他各层土壤盐分属性均具有强烈的空间自相关性；盐渍化类型以硫酸盐型、氯化物—硫酸盐型和硫酸盐—氯化物型为主，盐渍化程度以轻度盐渍化为主。

关键词：莱州湾南岸土壤剖面盐分离子空间分布

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