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靖海湾富营养化海域浮游动物群落变化及其影响因素

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渔业科学进展 2024年第2期45卷 14-27页

作者：陈学杨丁东生崔正国曲克明魏玉秋天津农学院水产学院天津300392 中国水产科学研究院黄海水产研究所农业农村部海洋渔业与可持续发展重点实验室山东青岛266071 崂山实验室海洋渔业科学与食物产出过程功能实验室山东青岛266071

沿海生态系统对生物多样性过程至关重要,因为陆地和海洋环境之间存在着强烈的相互作用。浮游动物是海洋生态系统中重要的次生生产者和生物泵的主要驱动因素,其群落变化可能会对沿海生态系统产生影响。因此,综合评价各种环境因素对沿海... 详细信息

沿海生态系统对生物多样性过程至关重要,因为陆地和海洋环境之间存在着强烈的相互作用。浮游动物是海洋生态系统中重要的次生生产者和生物泵的主要驱动因素,其群落变化可能会对沿海生态系统产生影响。因此,综合评价各种环境因素对沿海生态系统中浮游动物群落变化的影响具有重要意义。为研究靖海湾海域浮游动物群落与环境因子的关系,分别于2021年至2022年5月(春季)和8月(夏季)对该海域进行4个航次的环境因子和浮游动物调查,并应用冗余分析(RDA)和Pearson相关性分析探究了环境因子对浮游动物优势种和群落的影响。结果显示,2021-2022年靖海湾海域富营养化程度有显著增加,尤其是在2022年夏季,靖海湾海域受到严重的富营养化污染。2021年浮游动物平均丰度高于2022年,在富营养化最严重的2022年夏季,浮游动物的平均丰度降至54.07个/m^(3)。此外,主坐标分析(PCoA)也显示,2022年夏季浮游动物群落与前3个航次有显著的区别。4个航次共鉴定出浮游动物10类47种,其中,桡足类是春季最优势的种群,浮游幼虫是夏季最优势的种群。太平洋纺锤水蚤(Acartiapacifica)和短尾类溞状幼体[Zoealarva(Brachyura)]在4个航次中均为优势种,但在2022年夏季优势度和丰度均出现下降。通过结合RDA和Pearson相关性分析发现,影响靖海湾海域浮游动物群落结构和丰度变化的主要环境因素为富营养化,而盐度影响了浮游动物的季节变化。此外,通过PCoA分析以及对比2021年和2022年的数据发现,台风这类偶发性事件可能也是影响浮游动物群落变化的重要原因之一。研究结果将有利于后续研究靖海湾生态系统以及了解近海海湾浮游动物群落动态的控制因素,有助于科学管理靖海湾生态环境和深入了解海湾浮游动物群落变化的机制。

关键词：富营养化盐度台风浮游动物群落结构靖海湾

基于里德堡原子电场传感的计量、通信以及混合量子系统

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Science Bulletin 2024年第10期69卷 1515-1535页

作者：张好马宇廖开宇杨文广刘宗凯丁冬生颜辉李文辉张临杰 State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Laser SpectroscopyShanxi UniversityTaiyuan 030006China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230036China Key Laboratory of Atomic and Subatomic Structure and Quantum Control(Ministry of Education) Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of MatterSchool of PhysicsSouth China Normal UniversityGuangzhou 510006China Centre for Quantum Technologies National University of SingaporeSingapore 117543Singapore Hefei National Laboratory Hefei 230088China

Rydberg atoms-based electric field sensing has developed rapidly over the past decade.A variety of theoretical proposals and experiment configurations are suggested and realized to improve the measurement metrics,such as intensity sensitivity,bandwidth,phase,and *** Stark effect and electromagnetically induced transparency(EIT)or electromagnetically induced absorption(EIA)are fundamental physics principles behind the ***,various techniques such as amplitude-or frequency-modulation,optical homodyne read-out,microwave superheterodyne and frequency conversion based on multi-wave mixing in atoms are utilized to push the metrics into higher *** this review,different technologies and the corresponding metrics they had achieved were presented,hoping to inspire more possibilities in the improvement of metrics of Rydberg atom-based electric field sensing and broadness of application scenarios.

关键词： Rydberg atom Electric field sensing Atomic sensor

青岛近岸海域不同生态系统浮游植物群落结构对比研究

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海洋湖沼通报（中英文） 2024年第3期46卷 149-157页

作者：李晓娇崔正国孙雪梅贾军丁东生陈碧鹃陈聚法上海海洋大学水产与生命学院上海201306 青岛海洋科学与技术试点国家实验室海洋渔业科学与食物产出过程功能实验室中国水产科学研究院黄海水产研究所山东青岛266071

基于2019年春季(5月)和夏季(8月)在青岛近岸的现场调查,研究了青岛近岸浮游植物群落结构变化特征及其与环境相关性,分析了浮游植物群落结构形成及变化的原因。结果显示,青岛近岸海域春夏两季共鉴定出浮游植物109种,隶属4门52属。与历史... 详细信息

基于2019年春季(5月)和夏季(8月)在青岛近岸的现场调查,研究了青岛近岸浮游植物群落结构变化特征及其与环境相关性,分析了浮游植物群落结构形成及变化的原因。结果显示,青岛近岸海域春夏两季共鉴定出浮游植物109种,隶属4门52属。与历史同期资料对比,青岛近岸浮游植物群落出现明显的群落演替现象,中肋骨条藻(Skeletonema costatum)的优势地位下降。胶州湾浮游植物细胞丰度明显大于崂山近岸,夏季崂山近岸的多样性指数大于胶州湾。对浮游植物群落结构与环境因子进行相关性分析和冗余分析发现,浮游植物细胞丰度与磷酸盐、DIN呈极显著正相关关系(P<0.01),与COD呈显著正相关关系(P<0.05),与盐度、pH呈显著负相关关系(P<0.05)。

关键词：浮游植物群落结构优势种青岛近岸营养盐

Sedimentary environment of Ediacaran glacigenic diamictite in Guozigou of Xinjiang, China

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Chinese Science Bulletin 2009年第23期54卷 3283-3294页

作者： ding HaiFeng MA dongsheng YAO ChunYan SHU LiangShu State Key Laboratory for Mineral Deposits Research School of Earth Sciences and Engneering Nanjing University Nanjing 210093China

The Talisayi Formation found in the Guozigou region on the southern side of Sayram Lake of Xinjiang, China is a Neoproterozoic glacigenic diamictite succession that has not been adequately researched. According to its isotopic geochronology and regional stratigraphic correlation, the Talisayi Formation is equivalent to the Ediacaran glacial sediments. The present paper provides the geochemical data of the Talisayi Formation that reveals the tectonic setting and sedimentary environment in this area during the Ediacaran period. The oxides of Si, K, Na and Al and their ratios of matrix materials from glacigenic diamictites and bulk rock of siltstone and argillaceous siltstones indicate that the sedimentary environment of this formation evolved from a tectonically active region to a passive continental margin. Values of CIA (carbonate-corrected Chemical Index of Alteration) ranging from 54 to 74 show a low-middle weathering action under a glacial environment. Total organic carbon (TOC), V/Cr, Ni/Co and U/Th ratios suggest that the sediments deposited in shallow water with an oxic and weak hydrodynamic condition. There is an abrupt rise in TOC, V/Cr, Ni/Co and U/Th ratios respectively in the overlying Lower Cambrian dolomitic limestones and in the bottom of Talisayi Formation, indicating a rapidl increase in biologic productivity and a variation in redox conditions, which was probably caused by seawater mixing of deep anoxic water and surface oxic water.

关键词：沉积环境杂砾岩果子沟迪卡新疆中国冰川沉积物泥质粉砂岩

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Towards realising high-speed large-bandwidth quantum memory

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Science Foundation in China 2016年第3期24卷 57-71页

作者： SHI BaoSen ding dongsheng Key Laboratory of Quantum Information University of Science and Technology of China Synergetic Innovation Center of Quantum Information & Quantum Physics University of Science and Technology of China

Indispensable for quantum communication and quantum computation,quantum memory executes on demand storage and retrieval of quantum states such as those of a single photon,an entangled pair or squeezed *** the various forms of quantum memory,Raman quantum memory has advantages forits broadband and high-speed characteristics,which results in a huge potential for applications in quantum networks and quantum ***,realising Raman quantum memory with true single photons and photonic entanglementis *** this review,after briefly introducing the main benchmarks in the development of quantum memory and describing the state of the art,we focus on our recent experimental progress inquantum memorystorage of quantum states using the Raman scheme.

关键词： Quantum storage Quantum memory Quantum entanglement Quantum communication

Potential risks of organic contaminated soil after persulfate remediation:Harmful gaseous sulfur release

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Journal of Environmental Sciences 2024年第1期135卷 1-9页

作者： Yuyang Long Zixiao Wu Xiaodong ding Jiansong Chen dongsheng Shen Jiali Shentu Cai Hui Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling Zhejiang Engineering Research Center of Non-ferrous Metal Waste RecyclingInstrumental Analysis CenterSchool of Environmental Science and EngineeringZhejiang Gongshang UniversityHangzhou 310012China Shangyu Yingtai Fine Chemical Co. Ltd.Shaoxing 312000China Hangzhou Ecological Environment Monitoring Center Hangzhou 310007China

Persulfate is considered a convenient and efficient remediation agent for organic contaminated ***,the potential risk of sulfur into the soil remediation by persulfate remains *** this study,glass bottles with different persulfate dosages and groundwater tables were set up to simulate persulfate remediation of organic pollutants(aniline).The results found sulfate to be the main end-product(83.0%–99.5%)of persulfate remediation after10 ***,H_(2)S accounted for 93.4%–99.4%of sulfur reduction end-products,suggesting that H_(2)S was the final fate of sulfur.H_(2)S was released rapidly after one to three days at a maximum concentration of 33.0 ppm,which is sufficient to make a person *** to the fitted curve results,H_(2)S concentration decreased to a safe concentration(0.15 ppm)after 20–85 ***,the maximum concentration of methanethiol reached 0.6 *** results indicated that secondary pollution from persulfate remediation could release harmful gases over a long ***,persulfate should be used more carefully as a remediation agent for soil contamination.

关键词： Gaseous sulfur release H_2S Long period potential risk Organic contaminated soil remediation Persulfate

Fractional-order Integral State Space Modeling and Quasi State Analysis via Block Operational Matrix Scheme

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Fractional-order Integral State Space Modeling and Quasi Sta...

Improved spatio-temporal alignment measurement method for hull deformation

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作者： dongsheng ding Donglian Qi Qiao Wang College of Electrical Engineering Zhejiang University

In this paper, the fractional-order integral state space realization of a class of any proper fractional transfer function is presented. The operational matrix is generalized into the block form for fitting to carry out the quasi state analysis of the fractional-order integral state space model. Finally, some examples are exhibited to prove the validity of the proposed developments.

关键词： Fractional-order System Fractional-order Integral State Space Model Chebyshev Polynomial Block Operational Matrix

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Journal of Systems Engineering and Electronics 2024年第2期35卷 485-494页

作者： XU dongsheng YU Yuanjin ZHANG Xiaoli PENG Xiafu School of Automation Beijing Institute of TechnologyBeijing 100081China School of Aerospace Engineering Xiamen UniversityXiamen 361005China

In this paper,an improved spatio-temporal alignment measurement method is presented to address the inertial matching measurement of hull deformation under the coexistence of time delay and large misalignment *** misalignment angle and time delay often occur simultaneously and bring great challenges to the accurate measurement of hull deformation in space and *** proposed method utilizes coarse alignment with large misalignment angle and time delay estimation of inertial measurement unit modeling to establish a brand-new spatiotemporal aligned hull deformation measurement *** addition,two-step loop control is designed to ensure the accurate description of dynamic deformation angle and static deformation angle by the time-space alignment method of hull *** experiments illustrate that the proposed method can effectively measure the hull deformation angle when time delay and large misalignment angle coexist.

关键词： inertial measurement spatio-temporal alignment hull deformation

Benthodytes occidentpalauta ***.,a new species of deep-sea holothuroid(Elasipodida:Psychropotidae)from the west of Kyushu-Palau Ridge in the Western Pacific Ocean

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Journal of Oceanology and Limnology 2024年第1期42卷 252-262页

作者： Chongzhen YUAN Chunsheng WANG dongsheng ZHANG Key Laboratory of Marine Ecosystem Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082China School of Oceanography Shanghai Jiao Tong UniversityShanghai 200030China

Benthodytes occidentpalauta *** collected from the Kyushu-Palau Ridge at a depth of 5481 m in *** new species is characterized by a gelatinous body wall,violet skin,six pairs of dorsal papillae,and a rough mid-ventral surface without tube *** dorsal deposits are rod-shaped and *** types of papillae deposits as crosses with four arms with central bipartite *** deposits are *** ossicles are rod-shaped with end *** deposits are rodshaped,tripartite,and *** phylogenetic analyses based on cytochrome oxidase subunit 1(COI)and 16S individually and a concatenated dataset of COI and 16S genes of this species support that *** *** to Benthodytes.

关键词： Holothuroidea Benthodytes cytochrome oxidase subunit 1(COI) 16S phylogenetic analysis