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Geological reservoir and resource potential(10^(13.m^(3.)of gas hydrates in the south china sea

china Geology 2024年第3期7卷 422-444页

作者： Pi-bo Su Wei Wei yun-bao sun Yao-yao Lü Huai Cheng Wei-feng Han Wei Zhang Jin-qiang Liang National Engineering Research Center for Gas Hydrate Exploration and Development Guangzhou 511458China Sanya institute of south china {3. Geology Guangzhou Marine Geological SurveySanya 572025China Central Laboratory of Geological sciences Research Institute of Petroleum Exploration and DevelopmentLangfang 065007China Qingdao institute of Marine Geology Qingdao 266237China Laboratory for Marine Mineral Resources Qingdao Marine Science and Technology CenterQingdao 266237China

A detailed understanding of the distribution and potential of natural gas hydrate(NGHs)resources is crucial to fostering the industrialization of those resources in the south china {3.,where NGHs are *** this study,this study analyzed the applicability of resource evaluation methods,including the volumetric,genesis,and analogy methods,and estimated NGHs resource potential in the south china {3. by using scientific resource evaluation methods based on the factors controlling the geological accumulation and the reservoir characteristics of ***,this study compared the evaluation results of NGHs resource evaluations in representative worldwise {3. areas via rational *** results of this study are as follows:(1)The gas hydrate accumulation in the south china {3. is characterized by multiple sources of gas supply,multi-channel migration,and extensive accumulation,which are significantly different from those of oil and gas and other unconventional resources.(2)The evaluation of gas hydrate resources in the south china {3. is a highly targeted,stratified,and multidisciplinary evaluation of geological resources under the framework of a multi-type gas hydrate resource evaluation system and focuses on the comprehensive utilization of multi-source heterogeneous data.(3.Global NGHs resources is n×10^(15)m^(3.,while the NGHs resources in the south china {3. are estimated to be 10^(13.m^(3.,which is comparable to the abundance of typical marine NGHs deposits in other parts of the *** the south china {3.,the NGHs resources have a broad prospect and provide a substantial resource base for production tests and industrialization of NGHs.

关键词： Reservoir characteristics Natural gas hydrates Gas migration Resource potential Resource evaluation methods Hierarchical evaluation system Volumetric method south china sea Clean energy exploration engineering

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Carotenoids in Aquaculture:An Overview

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Journal of Animal Science and Biotechnology 2011年第1期2卷 44-58页

作者： Jin Niu Lixia Tian Heizhao Lin Yongjian liu2 south china sea Fisheries Research institute Chinese Academy of Fishery Sciences Guangzhou Guangdong510300 China Nutrition Laboratory Institute of Aquatic Economic Animals School of Life Science Sun Yat-sen University Guangzhou Guangdong 510275 China

Recent studies on the role of carotenoids in aquaculture have investigated their function in regulating pigmentation, growth, survival, and immune activity of aquatic animals. These carotenoids include astaxanthin, canthaxanthin, lutein, zeaxanthin, and tunaxanthin. Astaxanthin and canthaxanthin are the main synthetic carotenoids used world-wide in the aquaculture industry. They play an important role in protecting cells and organisms against photosensitized oxidations. Direct evidence of carotenoids functioning as antioxidants in vivo has been reported in animal models. In addition to their established biological effects as antioxidants, carotenoids appear to have a great variety of cellular actions that make them remarkable physiological modulators. Consequently, recent attention has been focused on improving our understanding of carotenoids on the physiology and metabolism in aquatic animals with a view to enhance the efficacy of astaxanthin as a carotenoid pigment. This review aims to summarize the function and research progress of carotenoids in aquaculture. We discuss the methods used to study the absorption, transport, metabolic transformation and deposition of carotenoids, and their spatial and temporal expression.

关键词： absorption and transport aquaculture caromnoids function metabolism and deposition

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Phytoplankton growth and microzooplankton grazing in the central and northern south china sea in the spring intermonsoon season of 2017

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Acta Oceanologica Sinica 2020年第6期39卷 84-95页

作者： Dawei Chen Congcong Guo Linhui yu yuanzhen Lu Jun sun Tianjin Key Laboratory of Marine Resources and Chemistry Tianjin University of Science and TechnologyTianjin 300457China Research Centre for Indian Ocean Ecosystem Tianjin University of Science and TechnologyTianjin 300457China State Key Laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China

Phytoplankton growth rates and mortality rates were experimentally examined at 21 stations during the 2017 spring intermonsoon(April to early May)in the northern and central south china sea(SCS)using the dilution technique,with emphasis on a comparison between the northern and central SCS areas which had different environmental *** had been higher temperature but lower nutrients and chlorophyll a concentrations in the central SCS than those in the northern *** mean rates of phytoplankton growth(μ0)and microzooplankton grazing(m)were(0.88±0.3.)d–1 and(0.55±0.22)d–1 in the central SCS,and both higher than those in the northern SCS with the values ofμ0((0.81±0.16)d–1)and m((0.3.±0.09)d–1),*** growth and microzooplankton grazing rates were significantly coupled in both *** microzooplankton grazing impact(m/μ0)on phytoplankton was also higher in the central SCS(0.63.0.12)than that in the northern SCS(0.3.±0.06).The microzooplankton abundance was significantly correlated with temperature in the *** might more effectively promote the microzooplankton grazing rate than phytoplankton growth rate,which might contribute to higher m and m/μ0 in the central *** with temperature,nutrients mainly affected the growth rate of *** the nutrient enrichment treatment,the phytoplankton growth rate(μn)was higher thanμ0 in the central SCS,suggesting phytoplankton growth in the central SCS was nutrient *** ratio ofμ0/μn was significantly correlated with nutrients concentrations in the both areas,indicating the limitation of nutrients was related to the concentrations of background nutrients in the study stations.

关键词： dilution technique phytoplankton growth microzooplankton grazing south china sea spring intermonsoon season

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The influence of coupling mode of methane leakage and debris input on anaerobic oxidation of methane

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Acta Oceanologica Sinica 2021年第8期40卷 78-88页

作者： Rui Xie Daidai Wu Jie liu Guangrong Jin Tiantian sun Lihua liu Nengyou Wu Key Laboratory of Gas Hydrate Guangzhou Institute of Energy ConversionChinese Academy of SciencesGuangzhou 510640China guangzhou Marine Geological Survey China Geological SurveyMinistry of Natural ResourcesGuangzhou 510075China Institution of south china sea Ecology and Environmental Engineering Chinese Academy of SciencesGuangzhou 510301China Evaluation and Detection Technology Laboratory of Marine Mineral Resources Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Key laboratory of Gas Hydrate Ministry of Natural ResourcesQingdao 266071China

Anaerobic oxidation of methane(AOM) is an important biogeochemical process, which has important scientific significance for global climate change and atmospheric evolution. This research examined the δ^(3.)S, terrigenous clastic indices of TiO_(2) and Al_(2)O_(3., and times for formation of the Ba front at site SH1, site SH3.and site 973.4 in the {3. china sea. Three different coupling mechanisms of deposition rate and methane flux were discovered. The different coupling mechanisms had different effects on the role of AOM. At site 973.4, a high deposition rate caused a rapid vertical downward migration of the sulphate–methane transition zone(SMTZ), and the higher input resulted in mineral dissolution. At site SH3. the deposition rate and methane flux were basically in balance,so the SMTZ and paleo-SMTZ were the most stable of any site, and these were in a slow process of migration. At site SH1, the methane flux dominated the coupled mode, so the movement of the SMTZ at site SH1 was consistent with the general understanding. Understanding the factors influencing the SMTZ is important for understanding the early diagenesis process.

关键词： methane seep terrestrial detrital material anaerobic oxidation of methane gas hydrate

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海岸带和内陆水体透明度动态变化特征及其主导影响因素

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光学学报 2018年第3期38卷 223-235页

作者：贾后磊苏文黄华梅孙庆杨姜广甲马荣华国家海洋局南海规划与环境研究院广东广州510310 国家海洋局南海环境监测中心广东广州510300 中国科学院南京地理与湖泊研究所江苏南京210008

基于太湖、鄱阳湖、珠江口和大亚湾水域大量的生物-光学数据,提出透明度高度(SD_H)法评价水域的透明度,并将该方法应用于新一代水色卫星传感器Suomi NPP VIIRS,揭示了水体透明度的动态变化特征。分析了不同水域透明度的主导影响因素,对... 详细信息

基于太湖、鄱阳湖、珠江口和大亚湾水域大量的生物-光学数据,提出透明度高度(SD_H)法评价水域的透明度,并将该方法应用于新一代水色卫星传感器Suomi NPP VIIRS,揭示了水体透明度的动态变化特征。分析了不同水域透明度的主导影响因素,对比了珠江口水域VIIRS和中分辨率成像光谱仪(MODIS)的透明度产品,并讨论了两者的水环境监测能力。结果表明,基于VIIRS的488,555,672nm波段构建的SD_H模型适用于研究水域,可以解释79%的透明度变化。将所提模型应用于预处理后的VIIRS卫星遥感影像,可得到太湖、鄱阳湖、珠江口和大亚湾水体透明度的空间分布特征。相对于浮游植物,悬浮物和有色溶解有机物是影响海岸带和内陆水体透明度的主导因子。VIIRS和MODIS的透明度产品在空间上保持一致,但VIIRS透明度产品的空间分辨率优于MODIS,环境监测能力较强。

关键词：海洋光学水体光学 Suomi NPP VIIRS 光学特性 MODIS 准分析算法

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Talachalasins A-C,Undescribed Cytochalasans with a 16β-Methyl or 2-Oxabicyclo[3.3.1]nonan-3.one unit from the Deep-sea-Derived Fungus Talaromyces muroii *** 4043.

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chinese Journal of Chemistry 2023年第8期41卷 915-923页

作者： Xuemin Ding Weixia Ye Bin tan Qiaoyun Song yuchan Chen Wei {3. Lili sun Wei tang yulei Qiao Qingbo Zhang Haibo Zhang Ying Wang Weimin Zhang Changsheng Zhang Wenjun Zhang Key Laboratory of Tropical Marine Bio-resources and Ecology Guangdong Key Laboratory of Marine Materia MedicaRNAM Center for Marine Microbiology South China Sea Institute of OceanologyChinese Academy of Sciences164 West Xingang RoadGuangzhouGuangdong510301 China University of chinese Academy of sciences Beijing100049 China Sanya institute of oceanology SCSIOYazhou Scientific BaySanyaHainan572000 China Center for Bioactive Natural Molecules and Innovative Drugs Research College of PharmacyJinan UniversityGuangzhouGuangdong510632 China State Key Laboratory of Applied Microbiology southern china Guangdong Institute of MicrobiologyGuangzhouGuangdong510070 China

Comprehensive Summary Talachalasins A-C(1-3.,three new cytochalasans(CYTs),were isolated from deep-sea-derived fungus Talaromyces muroii *** *** structures of 1-3.including absolute configurations,were determined based on HRESIMS,NMR spectroscopic data,ECD comparison,and single crystal X-ray diffraction *** A-C(1-3.represented the first examples of cytochalasans possessing a unique 16β-methyl group,distinct from>500 reported *** C(3.was an unprecedented 20,21-seco-cytochalasans characterized by a 2-oxabicyclo[3.3.1]nonan-3.one *** A(1)displayed moderate cytotoxic activity against four tumor cell lines(IC_(50)3.40-10.02μM).Talachalasin B(2)showed comparable anti-RSV and HSV-1 activities(IC5012.5μM or IC5020.0μM).

关键词： Cytochalasans 166-Methyl group 20,21-seco-Cytochalasans 2-Oxabicyclo-[3.3.1]nonan-3.one unit Cytotoxic activity

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Global-Scale Diversity and Distribution Characteristics of Reef-Associated Symbiodiniaceae via the Cluster-Based Parsimony of Internal Transcribed Spacer 2 Sequences

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Journal of Ocean University of china 2021年第2期20卷 296-306页

作者： GONG Sanqiang CHAI Guangjun sun Wei ZHANG Fengli yu Kefu LI Zhiyong Marine Biotechnology Laboratory State Key Laboratory of Microbial Metabolism and School of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghai 200240China Key Laboratory of Tropical Marine Bioresources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology South China Sea Institute of OceanologyGuangzhou 510301China southern Marine Science and Engineering Guangdong Laboratory(guangzhou) Guangzhou 511458China Coral Reef Research Center of china Guangxi UniversityNanning 530004China

Photosynthetic species belonging to Symbiodiniaceae play important ecological roles in coral reef ecosystems. Nine phylogenetically supported Symbiodiniaceae clades(each containing multiple genetically distinct molecular types) have been detected in reef-associated animals and in seawater or sediments near coral reef areas. Although major advances in research on Symbiodiniaceae diversity have been made, information on the global-scale diversity and distribution characteristics of Symbiodiniaceae clades/types is still limited or must be expanded because most studies on Symbiodiniaceae have mainly focused on a limited number of hosts associated with Symbiodiniaceae or coral reef areas. Here, the diversity and distribution characteristics of Symbiodiniaceae data derived from reef-associated animals and seawater or sediments near coral reef areas were analyzed using 3.99 qualified Symbiodiniaceae internal transcribed spacer 2(ITS2) sequences retrieved from the GenBank database in May 2017. These sequences were annotated as Symbiodiniaceae ITS2 types via sequence alignment against database of Symbiodiniaceae ITS2 types. Results showed that photosynthetic Symbiodiniaceae ITS2 sequences could be annotated as 119 Symbiodiniaceae ITS2 types within nine clades(A–I), and Symbiodiniaceae ITS2 types mainly inhabited coral reefs between 3.?N and 3.?S. Symbiodiniaceae ITS2 types could be associated with multiple host taxa. Interestingly, these results implied that the distribution of Symbiodiniaceae ITS2 types was distinct in the Atlantic Ocean, the Red sea, the Mediterranean sea, and the Indo-Pacific Ocean. Although future field research should be performed to verify our results, this study provided a broad perspective of the diversity of Symbiodiniaceae clades/types on a global scale.

关键词： Symbiodiniaceae diversity reef-dwelling animals coral reefs global scale

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季节划分和变化研究进展

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地理科学进展 2024年第4期43卷 826-840页

作者：林蔚孙秀宝任国玉张键彬福建理工大学智慧海洋科学技术学院福州350118 中国科学院南海海洋研究所热带海洋环境国家重点实验室广州510301 中国地质大学(武汉)环境学院武汉430074 国家气候中心气候研究开放实验室北京100081 中国科学院大学北京100049

季节是全球和区域人类农业生产活动遵循的重要气候年内变化规律。近半个世纪以来全球地表气温明显升高,与地表气温相关联的季节起讫和持续时间等参数也随之发生显著变化。首先,论文总结了目前广泛应用的三大类季节定义方式,包括从行星... 详细信息

季节是全球和区域人类农业生产活动遵循的重要气候年内变化规律。近半个世纪以来全球地表气温明显升高,与地表气温相关联的季节起讫和持续时间等参数也随之发生显著变化。首先,论文总结了目前广泛应用的三大类季节定义方式,包括从行星角度出发的固定长度季节定义法、气温的绝对和相对阈值季节定义法、区域地理因素和天气平均态转变的季节定义法;其次,回顾了当前利用不同动态指标定义季节主要获得的历史时期冷季缩短、暖季变长的时空规律,以及气候变暖背景下自然变率和外强迫对季节长度变化原因的解释;最后,从季节定义方法的应用领域和空间上通用性角度评述了各个方法的优缺点,并从数据偏差影响、通用指数发展、气候变暖背景下变化机理三方面对未来进行了展望。研究结果明确了季节划分方式间的差别、季节变化特征及原因,不仅有利于指导农业生产,也可以为妥善应对气候变化提供可靠科学信息。

关键词：季节划分季节长度变化原因全球气候变暖

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Crustal activities recorded incoral reefs in the northwestern south china sea

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chinese Science Bulletin 2006年第B12期51卷 89-94页

作者： ZHAN Wenhuan YAO Yantao ZHANG Zhiqiang sun Zongxun ZHAN Meizhen sun Longtao liu Zaifeng CAS Key Laboratory of Marginal sea Geology South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China

Coral reefs in the northwest of south china sea have recorded the information from not only the environmental variation but also the crustal activities there during their development. The main crustal activities correlated with the coral reef development include fault, seismic, and volcano activities, etc. The high-resolution spark seismic profiles in the northwestern south china sea show that the fault activities in the coral reef region have been clearly recorded, and appear as neonatal faults incising reefs. Earthquakes in the coral reef region are rather intense, especially the two occurring on December, 3., 1994, and January, 10, 1995, around the southwest of Leizhou Peninsula, with the magnitude of 6.1 and 6.2, respectively. They have great influence on the growth of the local coral reefs. Quaternary volcanos are active in the northwestern south china sea, especially around the southwest of Leizhou Peninsula, and they have obvious control of the coral reef development. Some submarine volcanoes form the substrates of coral reef, while a few emerge above the sea surface and form coral islands.

关键词：南海西北部海域珊瑚礁外壳活动性环境变化

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Enzymatic Synthesis of a Diastereomer of Neoabyssomicin Derivative Using the Diels-Alderase Abyu

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chinese Journal of Chemistry 2021年第7期39卷 1871-1877页

作者： Wenjuan Ding Changbiao Chi Xiaoyi Wei Changli sun Jiajia Tu ming Ma Qinglian Li Jianhua Ju CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology Guangdong Key Laboratory of Marine Materia MedicaRNAM Center for Marine MicrobiologySouth China Sea Institute of OceanologyChinese Academy of Sciences164 West Xingang RoadGuangzhouGuangdong510301 China College of oceanology University of Chinese Academy of Sciences19 Yuquan RoadBeijing100049 China southern Marine Science and Engineering Guangdong Laboratory(guangzhou) No.1119Haibin Rd.Nansha DistrictGuangzhouGuangdong510301 China State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical SciencesPeking UniversityBeijing100191 China Key Laboratory of Plant Resources Conservation and Sustainable Utilization South China Botanical GardenChinese Academy of SciencesGuangzhouGuangdong510650 China

Main observation and conclusion The enzyme Abyu catalyses a Diels-Alder(DA)reaction during abyssomicin C *** this study,Abyu is shown to convert the native substrate of another Diels-Alderase(DAase),AbmU,to a new abys... 详细信息

关键词： Biosynthesis Bioorganic chemistry Enzyme catalysis Neoabyssomicin Diels-Alderase

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