Study of zooplankton ecology in Zhejiang coastal upwelling system-Species distribution and diversity of zooplankton   总被引：2，自引：0，他引：2  

He Dehu  Yang Guanming  Shen Weilin  Liu Hongbin 《海洋学报(英文版)》1988,7(2):304-313

The species distribution and diversity of zooplankton and the effects of hydrodynamic factors of Zhejiang coastal waters during the active period of upwelling are discussed.High dominance (low diversity), high biomass and short food chain were found in the landward margins of the central region of the upwelling. There were evident interactions between the distribution of zooplankton and the environmental factors. The expression of these interactions is that different ecotypes of zooplankton adapt to different hydrological situations. There is significant positive correlation between the diversity indices of zooplankton and the mean water temperature in the survey area. It is noted that the vertical distribution of Calanus sinicus indicates to a certain extent the colder water environment of the upwelling (Fig. 7, Table 2, Reference (Hargreaves, 1981).  相似文献   

大沙河容许负荷量及新建工业区废,污水排放对河口和深圳湾的影响     

罗家海  梁秩Shen 《南海研究与开发》1994,(4):1-11

  相似文献   

Study of zooplankton ecology in Zhejiang coastal upwelling system-Zooplankton biomass and abundance of major groups   总被引：1，自引：0，他引：1  

He Dehu  Yang Guanming  Fang Shaojin  Shen Weilin  Liu Hongbin  Gao Aigen  Huang Shuxin 《海洋学报(英文版)》1988,7(4):607-620

The studied area is a shallow water area that belongs to the East China Sea continent shelf. The distribution of zooplankton biomass is higher inshore than offshore. The maximum abundance is in the inshore edge of the centre of upwelling, which is the superposed area of the salinity front and temperature front, due to the fact that the mixture of three different waters has brought about a concentration of nutrients. The herbivorous Euphausia, Copepoda and Tunicata are the major groups of the abundant area. Tunicata possess the possibility to compete against other kinds of herbivorous zooplankton. This means that there is negative correlation between the distribution of Tunicata and that of Copepoda and Euphausia. The positions of maximum areas of zooplankton biomass, phytoplankton individual and the concentration of phosphates and chlorophyll-a overlap one another. In the centre of upwelling, zooplankton can not adapt itself to the environment of lower temperature and less oxygen even with rich nutrient  相似文献   

珠江伶仃河口湾及邻近内陆架的纵向环流与物质输运分析   总被引：7，自引：0，他引：7  

陈子Shen 《热带海洋》1993,12(4):47-54

根据实测资料分析了珠江伶仃河口湾与邻近内陆架在不同径流影响下的水体混合空间状态和季节变化特征。主要由河口湾表、中层冲淡水和内陆架底层上溯的高盐补偿流构成了河口湾和内陆架之间的净环流，在高径流量和西南大风的情况下，环流下移向内陆架扩展增强。计算表明，７月纵断面上的净环流输运是盐分纵向净通量的控制因素，输运方向指向上游，而其余季节则以向海的净平流输运为主。悬沙净通量主要受净平流及潮抽吸输运控制，潮抽吸  相似文献   

A new family of polychaeta-Euniphysidae     

Shen Shoupeng  Wu Baoling 《海洋学报(英文版)》1991,10(1):129-140

Euniphysa, originally a genus of the family Eunicidae, was erected by Wesenberg-Lund in 1949, and for a longtime there has been only one species in this genus. The present report is based on our samples collected from the South China Sea, and we consider that the differences between Euniphysa and Eunice are very significant: Five occipital tentacles distributed unequidistantly; the jaw consists of 6 pairs of maxillary plates; the body may be divided into anterior region and posterior region, etc. Therefore we suggest that Euniphysa should be separated from Eunicidae, and become a new family Euniphysi-dae. At present this family includes 3 genera, namely, Euniphysa , Paraeuniphysa and 1 new genira Heterophysa; Totally there are 7 species, including 3 new species and 1 new combination species.  相似文献   

深圳湾蚝场环境及近年死蚝事件的初步调查     

梁秩Shen  曾毓业 《南海研究与开发》1995,(1):4-10

  相似文献   

Application of Dangerous Probability Function in Risk Estimation of Surface Rupture Earthquake：Taking the Lingwu Fault in Ningxi1 Region as on Example     

Chai Chizhang  Zhang Wenxiao  Liao Yuhu  Xu Wenjun  Shen Xuhui  Tian Qinjian  Wei Kaibo  Chen Zhengwei 《中国地震研究》2002,16(1):60-70

Based on the fitting on paleoearthquake data of intra-plate regions in the northern part of Chi-na and giving a statistical model of time interdependence,the potential damage earthquakes in a definite future period and characteristics of present shocks along the Lingwu fault have been analyzed by using dangerous probability function and some new data concerned.We have in-ferred that the fault has entered a period that earthquakes will probably occur.There exists a potential danger that a strong earthquake with Ms7.0-7.5 will occur in 10-100a.  相似文献   

非单一水平均匀下垫面空气动力学参数的确定   总被引：17，自引：2，他引：17       下载免费PDF全文

张宏Shen  陈家宜 《应用气象学报》1997,8(3):310-315

文章介绍了一种利用单一高度风速、温度湍流资料确定空气动力学参数的方法。该方法无须进行风速廓线的测量，可以应用于非单一水平均匀下垫面和非中性层结，避免了主观性。用该方法计算了北京城市北部边缘325 m气象塔附近的零值位移d和地表粗糙 z0。结果表明:该处下垫面零值位移d和地表粗糙度z0与风向有很强的依赖关系，与气象塔周围的城市建设相对应。  相似文献   

Mineralization Ages of the Jiapigou Gold Deposits,Jilin   总被引：1，自引：0，他引：1  

Li Junjian  Shen Baofeng  Mao Debao  Li Shuangbao  Zhou Huifang  Cheng Yuming Tianjin Institute of Geology  Mineral Resources  Chinese Academy of Geological Sciences  Tianjin Nonferrous Metal Geological Exploration Bureau  Changchun  Jilin 《《地质学报》英文版》1997,71(2):180-188

The Jiapigou gold deposits are typical vein type deposits associated withArchaean greenstone belts in China. According to the crosscutting relationships between dykesand auriferous veins, single hydrothermal zircon U-Pb dating and quartz K-Ar,~(40)Ar-~(39)Ar andRb-Sr datings, the main mineralization stage of the Jiapigou deposit has been determined to be2469-2475 Ma, while mineralization superimposition on the gold deposit occurred in1800-2000 Ma and 130-272 Ma. They form a mineralization framework of one oldermetallogenic epoch (Late Archaean-Early Proterozoic) and one younger metallogenic epoch(Mesozoic) of gold deposits in Archaean greenstone belts in China.  相似文献   

Characteristics of Energy Accumulation and Release of Seismogenic Tectonics and Seismic Risk Analysis in Some Areas in the Tianshan Mountains, Xinjiang1     

Shen Jun 《中国地震研究》2005,19(1):1-11

INTRODUCTIONHowtocombinethestudyofseismogenictectonicswithearthquakepredictionisanurgentscientificdifficulty .Thereexistbiggapsbetweenstudymethodsandcurrentknowledgeonseismogenitectonics ,earthquakeprediction ,seismogenesisandthephysicsofearthquakeoccurre…  相似文献