检索结果-南通市图书馆

Environmental Drivers of Temporal and Spatial Fluctuations of Mesozooplankton Community in Daya Bay, Northern South China Sea

引用

Journal of Ocean University of China 2021年第4期20卷 1013-1026页

作者： LI Kaizhi MA Jie HUANG Liangmin TAN Yehui song xingyu Key Laboratory of Tropical Marine Bio-Resources and Ecology(LMB)Guangdong Provincial Key Laboratory of Applied Marine Biology(LMB)South China Sea Institute of Oceanology Chinese Academy of SciencesGuangzhou 510301China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou)Guangzhou 511458 China School of Life Sciences East China Normal UniversityShanghai 200241China University of Chinese Academy of Sciences Beijing 100049China Nansha Marine Ecological and Environmental Research Station South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China

The response of zooplankton to the ecological environment in Daya Bay is unclear under the influence of both climate changes and anthropogenic activities on a seasonal to inter-annual *** on monthly surveys and historical data,we found the zooplankton community had changed temporally and spatially.A total of 134 species was recorded during the study,and copepods dominated numerically in terms of diversity and *** copepods and cladocerans were the main contributors to zooplankton *** community structure of zooplankton was temporally classified into the warm and cold groups,and spatially into the three groups located in the marine cage-culture area(MCCA),the outflow of nuclear power plants(ONPP)and unpolluted waters(UPW).The zooplankton was characterized by low biomass(dry weight),high diversity and abundance in the warm period in contrast to that in the cold *** with the other two groups,the MCCA group of zooplankton showed high abundance,low diversity and *** in dominant species were closely related to temperature,salinity and chlorophyll a *** diversity and dry weight decreased in comparison with 30 years ago,while zooplankton abundance *** seasonal variation in zooplankton was affected mainly by temperature that was controlled by monsoon,while the spatial difference in the community structure was probably due to eutrophication in the MCCA and thermal water discharge from *** zooplankton community is undergoing great changes with the tendency of miniaturization and gelatinization in recent 30 years in Daya Bay.

关键词： zooplankton monsoon eutrophication thermal water discharge Daya Bay South China Sea

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Chlorophyll a increase induced by surface winds in the northern South China Sea

引用

Acta Oceanologica Sinica 2012年第4期31卷 76-88页

作者： GAO Shan WANG Hui LIU Guimei HUANG Liangmin song xingyu College of Environmental Science and Engineering Ocean University of ChinaQingdao 266100China National Marine Environmental Forecasting Center State Oceanic AdministrationBeijing 100081China State Key Laboratory of Oceanography in the Tropics Guangzhou 510301China Key Laboratory of Marine Bio-resources Sustainable UtilizationChinese Academy of SciencesGuangzhou 510301China

The response of chlorophyll a （Chl a） concentration to wind stress is analyzed in the South China Sea （SCS）, using in-situ data of Chl a and remote sensing data （QuikScat-sea surface wind （SSW）, AVHRR-sea surface temperature （SST）, AVISO merged-sea level anomalies （SLA）, SeaWiFS- derived Chl a and MODIS Terra-derived Chl a） in August/September/October 2004, 2006 and 2009. The variability of SSW, SST and SLA 7 d before in-situ Chl a sampling （including the work day of in^situ Chl a sampling） with the same latitude and longitude of the study area are investigated, and the correlation coefficients are calculated between these hydrographic factors and in-situ Chl a concentration. The results show that the Chl a-SSW correlation coefficients at upper layers （such as 0 m and 25 m） are more significant than those at deeper layers （such as 50, 75 and 100 m） 1 3 d before, which indicates that there is a time lag of strong surface winds stimulating phytoplankton bloom. By analyzing the relationship among the daily remote sensing derived （RS- derived） SSW, SST, SLA and 3 d averaged SeaWiFS/MODIS-derived Chl a concentration in the northern SCS in September 2004 and 2009 respectively, it shows that the intensity and speed of surface winds could have great influence on extend of Chl a increase. If surface winds reach 4-5 m/s over, Chl a concentration would increase 1-3 d after the process of strong surface winds in open sea area of the northern SCS mainly during September.

关键词： South China Sea phytoplankton bloom chlorophyll a surface wind vertical ,nixingand upwelling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Influence of mesoscale eddies on primary production in the South China Sea during spring inter-monsoon period

引用

Acta Oceanologica Sinica 2014年第3期33卷 118-128页

作者： HU Zifeng TAN Yehui song xingyu ZHOU Linbin LIAN Xiping HUANG Liangmin HE Yinghui Key Laboratory of Marine Bio-resources Sustainable Utilization (LMB) South China Sea Institute of Oceanology Chinese Academy of Sciences University of Chinese Academy of Sciences Marine Biology Research Station at Daya Bay Chinese Academy of Science State Key Laboratory of Tropical Oceanology (LTO) South China Sea Institute of Oceanology ChineseAcademy of Sciences

Mesoscale eddies have been suggested to have an impact on biological carbon fixation in the South China Sea （SCS）. However, their overall contribution to primary production during the spring inter-monsoon pe riod is still unknown. Based on large-scale biological and environmental in situ observations and synchro nous remote sensing data, the distribution patterns of phytoplankton biomass and the primary production, and the role of mesoscale eddies in regulating primary production in different eddy-controlled waters were investigated. The results suggested that the surface chlorophyll a concentrations and water column inte grated primary production （IPP） are significantly higher in cyclonic eddies and lower in the anticyclonic eddies as compared to that in non-eddy waters. Although eddies could affect various environmental factors, such as nutrients, temperature and light availability, nutrient supply is suggested to be the most important one through which mesoscale eddies regulated the distribution patterns of phytoplankton biomass and pri mary production. The estimated IPP in cyclonic and anticyclonic eddies are about 29.5% higher and 16.6% lower than the total average in the whole study area, respectively, indicating that the promotion effect of mesoscale cold eddies on the primary production was much stronger than the inhibition effect of the warm eddies per unit area. Overall, mesoscale eddies are crucial physical processes that affect the biological car bon fixation and the distribution pattern of primary production in the SCS open sea, especially during the spring inter-monsoon period.

关键词： mesoscale eddies chlorophyll a primary production vertically generalized production model,remote sensing South China Sea

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Seasonal Community Structure of Mesozooplankton in the Daya Bay,South China Sea

引用

Journal of Ocean University of China 2013年第3期12卷 452-458页

作者： LIU Huaxue LI Kaizhi HUANG Honghui song xingyu YIN Jianqiang HUANG Liangmin Key Laboratory of South China Sea Fishery Resource Exploitation & Utilization Ministry of Agriculture (LSF)South China Sea Fisheries Research InstituteChinese Academy of Fisheries Sciences Key Laboratory of Marine Bio-resources Sustainable Utilization (LMB) South China Sea Institute of OceanologyChinese Academy of Sciences

Mesozooplankton are key components of coastal ecosystems,linking the microbial food web to the classic food *** this study,species composition and abundance of mesozooplankton is studied for the Daya Bay in April(spring) and October(fall),2006.A total of 27 species of mesozooplankton were identified in spring and 58 species in *** species were Oithona tenuis,Flaccisagitta enflata,Penilia avirostris and Centropages tenuiremis in spring,shifting to Microsetella norvegica,Oithona tenuis and Parvocalanus crassirostris in *** mesozooplankton abundance was found at Aotou Cove and Dapeng'ao Cove compared to other stations,indicating the influence of eutrophication on mesozooplankton community in the Daya *** outbreak of Noctiluca scintillans bloom in spring reduced the species diversity and abundance of mesozooplankton.

关键词： community structure mesozooplankton Noctiluca Daya Bay

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Mechanisms of high-frequency dinoflagellate blooms of Scrippsiella trochoidea in Daya Bay,South China Sea

引用

Journal of Oceanology and Limnology 2021年第4期39卷 1293-1304页

作者： Yuan TIAN Simin HU Xianzhi LIN Hui HUANG xingyu song Yan YAN Xuedong XIE Tao LI Sheng LIU Key Laboratory of Tropical Marine Bio-resources and Ecology Guangdong Provincial Key Laboratory of Applied Marine BiologySouth China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China University of Chinese Academy of Sciences Beijing 100049China Tropical Marine Biological Research Station in Hainan Chinese Academy of SciencesSanya 572000China Nansha Marine Ecological and Environmental Research Station Chinese Academy of SciencesGuangzhou 510301China Guangdong Ocean and Fishery Environment Monitoring and Forecasting Center Guangzhou 510222China

Harmful algal blooms(HABs),such as dinoflagellate blooms,have adverse eff ects on coastal water environments,causing seafood contamination and aquaculture economic *** on historical HAB records data(1983-2017)and phytoplankton data(1982-2008),field investigation and laboratory experiments on frequently bloomed dinoflagellate species,we analyzed the possible mechanisms of high frequency dinoflagellate blooms in Daya Bay,South China *** HAB records data show that the proportion of dinoflagellate blooms increased from 15% before 1994 to 77.27% after *** bloom occurred mostly in summer(57.58%)in Yaling Bay(76.92%).The species inducing dinoflagellate blooms tended to be singular over time,with high proportion of Scrippsiella trochoidea(42.86%-88.88%).Laboratory experiment and field investigation of *** bloom showed that this species grew rapidly at 30℃ and 32.1℃(r=0.47,P7 m/s),which disturbed the resting cysts in the sediment and bring them into surface *** into account of environmental parameters,algae source,and atmospheric conditions,the probable mechanism of *** bloom could be *** cysts were resuspended by the spring tide or strong wind,germinated at the bottom layer,reproduced rapidly at higher temperature,and then aggregated in the inner bay(Yaling Bay),resulting the frequent *** *** the influences of global warming and human activities,it should be taken more attention that dinoflagellate blooms might increase along the coastal waters.

关键词： harmful algal blooms dinoflagellate Daya Bay Scrippsiella trochoidea

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Recent advances in two-dimensional photovoltaic devices

引用

Journal of Semiconductors 2024年第5期45卷 26-40页

作者： Haoyun Wang xingyu song Zexin Li Dongyan Li Xiang Xu Yunxin Chen Pengbin Liu Xing Zhou Tianyou Zhai State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Research Institute of Huazhong University of Science and Technology in Shenzhen Shenzhen 518057China Optics Valley Laboratory Wuhan 430074China

Two-dimensional(2D)materials have attracted tremendous interest in view of the outstanding optoelectronic properties,showing new possibilities for future photovoltaic devices toward high performance,high specific power and *** recent years,substantial works have focused on 2D photovoltaic devices,and great progress has been ***,we present the review of recent advances in 2D photovoltaic devices,focusing on 2D-material-based Schottky junctions,homojunctions,2D−2D heterojunctions,2D−3D heterojunctions,and bulk photovoltaic effect ***,advanced strategies for improving the photovoltaic performances are demonstrated in ***,conclusions and outlooks are delivered,providing a guideline for the further development of 2D photovoltaic devices.

关键词： two-dimensional materials photovoltaic devices photodetectors solar cells heterostructures

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Variations in silicate concentration affecting photosynthetic carbon fixation by spring phytoplankton assemblages in surface water of the Strait of Malacca

引用

Acta Oceanologica Sinica 2013年第4期32卷 77-81页

作者： LI Gang LIN Qiang SHEN Pingping NI Guangyan song xingyu WANG Shengfu FAN Yanzhi HUANG Liangmin TAN Yehui Key Laboratory of Marine Bio-resources Sustainable Utilization South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems South China Botanical Garden Chinese Academy of Sciences Guangzhou 510160 China

The Strait of Malacca （SoM）, the world＇s busiest sea-route, is increasingly polluted as the rapid develop- ment of world trades, affecting phytoplankton primary productivity therein. The variations of surface phy- toplankton biomass, size-structure and carbon fixation were investigated across the SoM during the spring period （May 4 to 9, 2011）. Chlorophyll a concentration increased from 0.12 ptg/L at the northwest entrance of the SoM to a maximal 0.63 #g/L at narrowest section, and decreased to 0.10/.tg/L at the southeast entrance. Photosynthetic carbon fixation by phytoplankton coincided well with Chl a biomass, and increased from 10.8 to 22.3 pg C/（L.d）, then decreased to 9.21/zg C/（L.d）; while the carbon fixation rate showed an inverse pattern to the changes of Chl a, and decreased from 87.1 to 35.5 #g C/（#g Chl a.d） and increased thereafter to 95.3 btg C/（/2g Chl a.d）. Picophytoplankton cells （〈3/2m） contributed to more than 60% and 50% of the total Chl a and carbon fixation at both the entry waters; while the contributions of pico-cells decreased sharply to the minimum of 18.3% and 27.5% at the narrowest part of the SoM. In particular, our results showed that the silicate concentration positively regulated Chl a biomass and carbon fixation, reflecting that the higher silicate favoured the growth of phytoplankton and thus led to higher primary production in this strait.

关键词： photosynthetic carbon fixation phytoplankton the Strait of Malacca

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Chemometric study of spatial variations of environmental and ecological characteristics in the Zhujiang River (Pearl River) Estuary and adjacent waters

引用

Acta Oceanologica Sinica 2011年第4期30卷 60-74页

作者： song xingyu HUANG Liangmin ZHANG Jianlin YIN Kedong LIU Sheng TAN Yehui YIN Jianqiang Key Laboratory of Marine Bio-resources Sustainable Utilization South China Sea Institute of Oceanography Chinese Academy of Sciences Guangzhou 510301 China State Key Laboratory of Oceanography in the Tropics Guangzhou 510301 China Australian Rivers Institute Griffith University Brisbane 4111 Australia

Chemometric approach based on principal component analysis（PCA） was utilized to examine the spatial variances of environmental and ecological characteristics in the Zhujiang River（Pearl River） Estuary and adjacent waters（ZREAW） in the South China Sea. The PCA result shows that the ZREAW can be divided into different zones according to the principal components and geographical locations of the study stations,and indicates that there are distinct regional variances on environmental features and the corresponding phytoplankton biomass and community structures among different areas. The spatial distribution of ecological features was implied to be influenced by various degrees of the different water resources,such as the Pearl River discharges,the coastal current and the oceanic water from the South China Sea. The variation of the biomass maximum zone and the complex impacts on the spatial distributions of phytoplankton biomass and production were also evaluated.

关键词： principal component analysis spatial variations environmental conditions ecological distribution phytoplankton Zhujiang River (Pearl River) Estuary

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

混合暗支撑联肢剪力墙非线性有限元数值模拟

引用

地震工程与工程振动 2013年第6期33卷 81-87页

作者：汪梦甫宋兴禹湖南大学土木工程学院湖南长沙410082

混合暗支撑联肢剪力墙是一种新型延性双肢剪力墙,其在地震作用下受力机理复杂,故准确模拟其非线性受力过程是结构抗震分析的重要课题。本文利用先进的数值模拟技术,在已有试验研究的基础上,对混合暗支撑联肢剪力墙进行合理建模,并系统... 详细信息

混合暗支撑联肢剪力墙是一种新型延性双肢剪力墙,其在地震作用下受力机理复杂,故准确模拟其非线性受力过程是结构抗震分析的重要课题。本文利用先进的数值模拟技术,在已有试验研究的基础上,对混合暗支撑联肢剪力墙进行合理建模,并系统分析了轴压比、配筋率、高宽比和连梁刚度等对混合暗支撑联肢剪力墙承载力和变形性能的影响规律。分析结果表明,数值模拟结果和试验结果吻合较好;轴压比、配筋率对混合暗支撑联肢剪力墙的弹性和弹塑性性能影响显著;连梁刚度主要影响混合暗支撑联肢剪力墙开裂后的性能;而高宽比既影响混合暗支撑联肢剪力墙的承载力和变形性能,又决定着混合暗支撑联肢剪力墙的破坏形式。研究结果对混合暗支撑联肢剪力墙的地震弹塑性计算具有一定的参考价值。

关键词：混合暗支撑联肢剪力墙非线性有限元数值模拟抗震性能

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于代理模型的三立柱半潜平台多目标优化

引用

上海交通大学学报 2021年第1期55卷 11-20页

作者：丘文桢宋兴宇张新曙上海交通大学海洋工程国家重点实验室高新船舶与深海开发装备协同创新中心上海200240

在半潜平台初始设计阶段,平台主尺度是影响平台水动力性能和建造成本的关键性因素.因此,对半潜平台主尺度进行多目标优化是一项极具工程意义的研究工作.首先,采用试验设计法确定平台的设计变量和样本数据库.其次,对半潜平台采用面元法... 详细信息

在半潜平台初始设计阶段,平台主尺度是影响平台水动力性能和建造成本的关键性因素.因此,对半潜平台主尺度进行多目标优化是一项极具工程意义的研究工作.首先,采用试验设计法确定平台的设计变量和样本数据库.其次,对半潜平台采用面元法和莫里森公式结合的方法进行水动力特性分析.同时在静水面上布置波面升高监测点,计算平台气隙值.根据数值模拟得到的数据库建立基于径向基函数的代理模型,并通过缺一交叉验证法得到径向基函数中的形参数值.所建立的代理模型可以极大提高优化效率.最后,采用多目标粒子群优化算法,以平台安全性和经济性作为两个优化目标,以平台稳性、气隙高度、水平方向运动性能作为约束条件,得到半潜平台的优化方案.通过对半潜平台多目标优化方案的分析,最终提出三立柱半潜平台最高效的优化策略.

关键词：多目标粒子群优化算法代理模型缺一交叉验证法径向基函数

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：