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Seasonal variation of atmospheric elemental carbon aerosols at Zhongshan Station,east Antarctica

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Advances in Polar Science 2022年第4期33卷 301-312页

作者： liU Yan li Chuanjin WANG Xiaoming DING Minghu DU Zhiheng SHI Guitao SUN Bo KANG Shichang XIAO Cunde State Key Laboratory of Cryospheric Science Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China College of Resources and Environment University of Chinese Academy of Sciences(UCAS)Beijing 100049China institute of Meteorological Sciences in Tibetan Plateau and Polar Regions Chinese Academy of Meteorological SciencesBeijing 100081China Key Laboratory of Geographic Information Science Ministry of EducationSchool of Geographic Sciences and State Key Lab of Estuarine and Coastal ResearchEast China Normal UniversityShanghai 200241China Key Laboratory for Polar Science MNRPolar Research Institute of ChinaShanghai 200062China State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal UniversityBeijing 100875China

Elemental carbon(or black carbon)(EC or BC)aerosols emitted by biomass burning and fossil fuel combustion could cause notable climate *** Hemisphere biomass burning emissions have contributed substantially to EC deposition in ***,we present the seasonal variation of EC determined from aerosol samples acquired at Zhongshan Station(ZSS),east *** concentration of EC in the atmosphere varied between 0.02 and 257.81 ng·m^(-3)with a mean value of 44.87±48.92 ng·m^(-3).The concentration of EC aerosols reached its peak in winter(59.04 ng·m^(-3))and was lowest(27.26 ng·m^(-3))in *** trajectory analysis showed that biomass burning in southern South America was the major source of the EC found at ZSS,although some of it was derived from southern Australia,especially during *** 2019–2020 Australian bush fires had some influence on EC deposition at ZSS,especially during 2019,but the contribution diminished in 2020,leaving southern South America as the dominant source of EC.

关键词： Zhongshan Station elemental carbon aerosols seasonal variations

基于人工神经网络的高分五号高光谱影像悬浮泥沙浓度反演方法

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红外与毫米波学报 2022年第1期41卷 323-336页

作者：刘一鸣张磊周梅梁建王妍孙力李庆利华东师范大学上海市多维度信息处理重点实验室上海200241 北京跟踪与通信技术研究所北京100094 华东师范大学空间信息与定位导航上海高校工程研究中心上海200241 华东师范大学纳光电集成与先进装备教育部工程研究中心上海200241 南通智能感知研究院江苏南通226000

悬浮泥沙浓度是水体监测中极为重要的指标。本论文基于神经网络具有弥补传统经验算法固有误差的潜力,设计并开发了基于人工神经网络的神经网络校正器来对经验反演结果进行二次校正。为了防止在小数据集的情况下出现过拟合问题,采用了特... 详细信息

悬浮泥沙浓度是水体监测中极为重要的指标。本论文基于神经网络具有弥补传统经验算法固有误差的潜力,设计并开发了基于人工神经网络的神经网络校正器来对经验反演结果进行二次校正。为了防止在小数据集的情况下出现过拟合问题,采用了特殊设计的正则化项。基于高分五号高光谱遥感数据以及在长江口和沿海水域同时收集的悬浮泥沙浓度实地测量结果,研究了4种基线经验模型,并评估了使用神经网络校正器后的精度。在每个基线模型上都测试了神经网络校正器模型的两个典型应用,包括基线模型校正和时间校正。在这两种应用中,结果均表明,经校正的D′Sa模型具有最高的准确性。通过使用基线模型校正,均方根误差从0.1495 g/L降低至0.1436 g/L,平均绝对百分比误差从0.7821降低至0.7580,决定系数从0.6805升高至0.6926。实施时间校正后,平均绝对百分比误差从0.8657降低至0.7817,决定系数从0.6688升高至0.7155。最后,基于神经网络校正器校正后精度最高的模型处理了整幅高分五号高光谱图像。本论文结果为各种经验反演算法提供了一种通用的二次校正方法,以最大程度地减少基线模型的固有误差,并且保证了反演精度。

关键词：神经网络校正器机器学习高光谱高分五号卫星水质悬浮泥沙浓度

Molecular phylogeny and taxonomy of four Remanella species(Protozoa, Ciliophora): A flagship genus of karyorelictean ciliates, with descriptions of two new species

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Zoological research 2022年第5期43卷 827-842页

作者： Ming-Zhen Ma Yu-Jie liu Yuan Xu Bo-Rong Lu Yu-Qing li Saleh AAL-Farraj Giulio Petroni Wei-Bo Song Ying Yan institute of Evolution&Marine Biodiversity Ocean University of ChinaQingdaoShandong 266003China State Key Laboratory of estuarine and coastal research East China Normal UniversityShanghai 200241China Zoology Department College of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia Department of Biological University of PisaPisa 56100Italy Laboratory for Marine Biology and Biotechnology Qingdao National Laboratory for Marine Science and TechnologyQingdaoShandong 266237China

During faunal studies of psammophilic ciliates along the coast of Qingdao, china, several marine karyorelictean species were isolated. Among them,four species within the genus Remanella were investigated, including two species new to science:i.e., R. rugosa, Remanella elongata sp. nov.,Remanella aposinica sp. nov.,and ***. Remanella rugosa has been reported several times, but this study is the first to provide detailed morphological characters and phylogenetics. Remanella elongata sp. nov. can be distinguished from its congeners by the presence of complex cortical granules, fewer macronuclei, and longer body size. Remanella aposinica sp. *** from its congeners by having 14–17 right lateral ciliary rows and 24–37 dikinetids of intrabuccal kinety. Poorly known Remanella rugosa var. unicorpusculata(Kahl, 1933) Foissner, 1996should be elevated from subspecies to species level,Remanella unicorpusculata(Foissner, 1996) ***., based on detailed redescriptions with statistical data, living morphology, infraciliature, and species definitions. Small subunit(SSU) rDNA was sequenced for the four species, and phylogenetic analysis revealed that all known taxa in Remanella formed the outline branch to the genus Loxodes with moderate to high bootstrap support among Remanella lineages.

关键词： Marineciliates Morphology Infraciliature Phylogeny

The hidden risk of microplastic-associated pathogens in aquatic environments

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Eco-Environment & Health 2023年第3期2卷 142-151页

作者： Huan Zhong Mengjie Wu Christian Sonne Su Shiung Lam Raymond W.M.Kwong Yuelu Jiang Xiaoli Zhao Xuemei Sun Xuxiang Zhang Chengjun li Yuanyuan li Guangbo Qu Feng Jiang Huahong Shi Rong Ji Hongqiang Ren School of Environment Nanjing UniversityState Key Laboratory of Pollution Control and Resource ReuseNanjing 210023China Department of Bioscience Arctic Research CentreAarhus UniversityRoskildeDenmark Higher Institution Centre of Excellence(HICoE) Institute of Tropical Aquaculture and Fisheries(AKUATROP)Universiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia Department of Biology York University4700 Keele StreetTorontoON M3J 1P3Canada Tsinghua Shenzhen International Graduate School Shenzhen 518055China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China Yellow Sea Fisheries research institute Chinese Academy of Fishery SciencesQingdao 266071China institute of Environmental research at Greater Bay Area Key Laboratory for Water Quality and Conservation of the Pearl River DeltaMinistry of EducationGuangzhou UniversityGuangzhou 510006China Key Laboratory of Environment and Health(HUST) Ministry of Education&Ministry of Environmental Protectionand State Key Laboratory of Environmental Health(Incubation)School of Public HealthTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China School of Environmental Science and Engineering Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation TechnologySun Yat-sen UniversityGuangzhou 510275China State Key Laboratory of estuarine and coastal research East China Normal UniversityShanghai 200241China university Centre for research and Development Department of ChemistryChandigarh UniversityGharuanMohaliPunjabIndia

Increasing studies of plastisphere have raised public concern about microplastics(MPs)as vectors for pathogens,especially in aquatic ***,the extent to which pathogens affect human health through MPs remains unclear,as controversies persist regarding the distinct pathogen colonization on MPs as well as the transmission routes and infection probability of MP-associated pathogens from water to *** this review,we critically discuss whether and how pathogens approach humans via MPs,shedding light on the potential health risks *** on cutting-edge multidisciplinary research,we show that some MPs may facilitate the growth and long-range transmission of specific pathogens in aquatic environments,ultimately increasing the risk of infection in *** identify MP-and pathogen-rich settings,such as wastewater treatment plants,aquaculture farms,and swimming pools,as possible sites for human exposure to MP-associated *** review emphasizes the need for further research and targeted interventions to better understand and mitigate the potential health risks associated with MP-mediated pathogen transmission.

关键词： Microplastics Pathogens Colonization Transmission Public health

Biodiversity of zooplankton in 0-3000 m waters from the eastern Indian Ocean in spring 2019 based on metabarcoding

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Water Biology and Security 2022年第1期1卷 41-52页

作者： Xia-Wen Cheng Lan-Lan Zhang Fei Gao Ye-Hui Tan Rong Xiang Zhuo-Ya Qiu li-Jun He State Key Laboratory of Marine Resources Utilization in South china Sea College of Marine ScienceHainan UniversityHaikou570228China Key Laboratory of Ocean and Marginal Sea Geology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou511458China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou511458China State Key Laboratory of estuarine and coastal research East China Normal UniversityShanghai200241China

To increase knowledge on zooplankton diversity in the deep sea,42 zooplankton samples(depths of 0–3000 m)were taken across five stations throughout the northeastern Indian Ocean using a vertical multi-plankton *** to metabarcoding results of the V4 region of the 18S rRNA gene,Copepoda,Hydrozoa and Malacostraca were present at all stations,while Polychaeta,Scyphozoa,and Thaliacea mainly appeared in the Bay of Bengal.A correlation heatmap showed that the abundance of surface species belonging to Copepoda,Gastropoda,Thaliacea,and Sagittoidea responded most closely to temperature,dissolved oxygen and chlorophyll-a,while the abundance of deep-water species belonging to Thecofilosea,Copepoda,Sagittoidea,and Polychaeta was negatively correlated with temperature,suggesting that temperature differences were driving depth-based variation in zooplankton community distributions in the tropical ***,Copepods are important for differentiating depth assemblages in the Indian *** minutus,Lucicutia ovalis,Heterostylites major and Metridia asymmetrica prefer the mesopelagic *** vertical distribution of zooplankton diversity showed a bimodal ***,communities between 200 and 400 m at stations ZS1,ZS3 and ZS4 differed greatly from those of 0–200 ***,at stations ZS2 and ZS5,communities between 200 and 400 m had high similarity with those of 0–200 m,possibly due to the influence of *** from this study significantly improve our understanding of zooplankton diversity and ecological functions in the deep sea.

关键词： Indian Ocean 18S rRNA Zooplankton diversity Depth profile Spatial variation

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鄱阳湖环湖灌区枯季缺水量分析及对策建议

湖泊科学 2022年第2期34卷 601-615页

作者：李振旗程和琴李纪人向诗月滕立志华东师范大学河口海岸学国家重点实验室上海200241 中国水利水电科学研究院北京100038

近年来,在以三峡大坝为代表的一系列流域人类活动作用下,鄱阳湖出现了枯水期延长、水位提前消落的现象,导致了一系列生态环境和民生问题.本文从环湖灌溉缺水入手,采用11种概率分布分析19532018年星子站水位,进行比较优选后选择Wakeby分... 详细信息

近年来,在以三峡大坝为代表的一系列流域人类活动作用下,鄱阳湖出现了枯水期延长、水位提前消落的现象,导致了一系列生态环境和民生问题.本文从环湖灌溉缺水入手,采用11种概率分布分析19532018年星子站水位,进行比较优选后选择Wakeby分布作为理论分布,得到90%保证率下的湖泊年平均水位及枯季9月至翌年2月月平均水位,并据历年平均水位选取代表水文年,进行环湖灌区水资源供需分析,获得缺水量.在此基础上,建立灌区缺水量变化与长江干流流量变化的量化关系,讨论其应对策略.结果表明:自2003年三峡工程运行以来,由于湖泊枯季水位降低,90%保证率下鄱阳湖环湖灌区9月至翌年2月的缺水量已达到2.26亿、2.12亿、0.57亿、0.58亿、0.55亿、0.25亿m^(3).通过调节长江干流流量满足环湖灌区用水需求的方案受到时段和“五河”来水状况的限制,即该方案仅适用于枯季910月“五河”来水减少的情况下.受限于这些条件,调节长江来水并非治本之策,目前仍需采取其他更为有效的手段以恢复鄱阳湖的水位及其过程.

关键词：环湖灌区鄱阳湖湖泊水位灌溉保证率枯季缺水量

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大陆岛入海沉积物通量的估算研究

海洋学报 2021年第12期43卷 60-69页

作者：李高聪蔡廷禄李志强高抒广东海洋大学海洋技术系广东湛江524088 广东省海洋遥感与信息技术工程技术中心广东湛江524088 自然资源部第二海洋研究所浙江杭州310012 华东师范大学河口海岸学国家重点实验室上海200062

大陆岛入海沉积物通量(Q_(s))信息对于精确解译大陆架沉积记录的研究是个重要补充。针对如何估算大陆岛Q_(s)的科学问题,本文以中国东南部海域的8227个大陆岛为例,提出了一种基于邻近大陆中小型河流Q_(s)的经验公式计算大陆岛Q_(s)的解... 详细信息

大陆岛入海沉积物通量(Q_(s))信息对于精确解译大陆架沉积记录的研究是个重要补充。针对如何估算大陆岛Q_(s)的科学问题,本文以中国东南部海域的8227个大陆岛为例,提出了一种基于邻近大陆中小型河流Q_(s)的经验公式计算大陆岛Q_(s)的解决方案。该方案在实施时需设置两个假定,即大陆岛的Q_(s)法则遵循邻近大陆中小河流的Q_(s)法则和可将1个大陆岛当作1个河流流域计算其Q_(s)。结果表明:(1)经验公式计算的大陆岛Q_(s)为其最小估计值;如考虑大陆岛流域的具体情况,实际的Q_(s)值会稍微增加,但其增幅不超过n^(0.13)(n为流域数量);(2)经验公式能获取大陆岛Q_(s)的大致数量级信息;大陆岛的总面积为4418.49 km^(2),对应Q_(s)的数量级为10^(6) t/a,与邻近大陆中型河流入海通量的数量级相当;(3)在大河河口湾充填阶段完成以前,大陆岛沉积物是内陆架泥质沉积体的主要物源之一。因此,大陆岛入海沉积物会对大陆架沉积体系的形成和演化造成一定程度的影响,需引起研究人员的高度重视。

关键词：沉积物通量大陆岛邻近大陆中小型河流经验公式修正中国东南部海域

基于CASA模型的长江口崇明东滩湿地植被净初级生产力与固碳潜力

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生态学杂志 2022年第2期41卷 334-342页

作者：原一荃薛力铭李秀珍华东师范大学河口海岸学国家重点实验室上海200241 崇明生态研究院上海200062 长江三角洲河口湿地生态系统教育部/上海市野外科学观测研究站上海200241

湿地生态系统具有很强的储碳、固碳能力,在全球碳循环中占有重要地位。为了解盐沼的固碳能力,以崇明东滩南部典型盐沼潮沟体系为对象,结合实验观测与遥感影像解译,估算了盐沼湿地的净初级生产力,并探讨了环境变化下盐沼湿地固碳潜力的... 详细信息

湿地生态系统具有很强的储碳、固碳能力,在全球碳循环中占有重要地位。为了解盐沼的固碳能力,以崇明东滩南部典型盐沼潮沟体系为对象,结合实验观测与遥感影像解译,估算了盐沼湿地的净初级生产力,并探讨了环境变化下盐沼湿地固碳潜力的变化。结果表明:盐沼植物净初级生产力表现出显著的时空差异,时间差异体现在年际和季节差异,即2013年和2017年盐沼植物净初级生产力总量分别为245.70和257.75 t C·a^(-1),呈现略微增长趋势;夏季植物净初级生产力(97.70±69.31 g C m^(-2)·month^(-1))显著高于其他季节(P<0.05);空间差异表现为净初级生产力随高程降低而降低,其中芦苇群丛的净初级生产力(1079.64±168.34 g C·m^(-2)·a^(-1))显著高于其他覆被类型(P<0.05);2017—2018年,研究区盐生植物固碳能力仍低于同一区域的陆地植被平均固碳水平,随崇明东滩盐沼逐渐成熟,固碳能力可进一步提高;在海平面上升背景下,盐沼植被的陆向演替,弥补了盐沼前缘侵蚀造成的有机碳损失,植物总固碳潜力每年递增130.24~250.12 t;而全球气温的持续升高以及河口环境的动态变化,如海平面上升、岸线侵蚀、植被演替及人为干扰等,增加了盐沼固碳能力的不确定性。在全球变化背景下,合理分析并预测其对碳循环的贡献,将为利用滨海湿地固碳增汇提供科学参考。

关键词：盐沼净初级生产力固碳能力

Spatiotemporal distribution of sea-island prehistoric dune sites,Holocene sea levels,and aeolian sand activities in Fujian Province,china

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Journal of Geographical Sciences 2022年第6期32卷 1157-1176页

作者： JIN Jianhui liNG Zhiyong li Zhizhong ZUO Xinxin FAN Xuechun HUANG Yunming WANG Xiaoyang WEI Changfu REN Yongqing QIU Junjie Key Laboratory of Subtropical Resources and Environment of Fujian Province Fujian Normal UniversityFuzhou 350007China Center for Southeast Environmental Archaeology of china Fujian Normal UniversityPingtan 350400FujianChina Qinghai institute of Salt Lake CASXining 810008China International institute of Austronesian of Pingtan Pingtan 350400FujianChina Fujian Provincial institute of Archaeology Fuzhou 350001China College of Humanities Minjiang UniversityMinhou 350108FujianChina

The lower reaches of the Minjiang River and its adjacent areas were among the most active prehistoric archaeological areas in Fujian *** accumulation types of Neolithic archaeological strata are roughly divided into dune sites and dune/shell mound *** sites can also be roughly divided into estuarine,coastal,and sea-island sites based on their geomorphic *** cultural development of these prehistoric sites is of great significance for understanding the migration and spread of Austronesian *** on luminescence dating of typical Neolithic sites on Haitan Island,their quartz-OSL(optically stimulated luminecesence)burial ages were *** previously published results,the temporospatial distribution characteristics of the sea-island sites on Haitan Island are discussed,and the relationship between Neolithic human activities and regional geomorphic processes is *** results show that:(1)the spatial and temporal distribution of the Haitan Island Neolithic sites are closely related to small-scale geomorphic features and are controlled by mesoscale geomorphic *** sites were mainly distributed in the foothills of two high hills along an NNE-SSW *** an increase in altitude,the features were distributed as“single site(I)–superimposed site–single site(II)”and appear *** type sites(I)mainly appeared at low sea level,whereas single type sites(II)mainly appeared at high sea *** sites were not subject to sea level *** relative elevation of the superimposed sites in the study area indicates the optimal residential area for human activities in the *** single site with an elevation lower than the optimal residential area was mainly restricted by the lowest residential area,whereas the single site at a higher elevation than the optimal residential area was mainly affected by livelihood patterns.(2)High sea level caused by the“backwater effect”in low latitude areas i

关键词： Neolithic period dune/shell mound site optically stimulated luminescence Holocene sea level change aeolian activity