Atmospheric input of trace elements to the western Pacific Ocean and the Kuroshio ocean area

ＡｔｍｏｓｐｈｅｒｉｃｉｎｐｕｔｏｆｔｒａｃｅｅｌｅｍｅｎｔｓｔｏｔｈｅｗｅｓｔｅｒｎＰａｃｉｆｉｃＯｃｅａｎａｎｄｔｈｅＫｕｒｏｓｈｉｏｏｃｅａｎａｒｅａ￥ＱｉａｎＦｅｎｌａｎ；ＹｕＨｏｎｇｊｉａｎ；ＬａｎＹｏｕｃｈａｎｇ；ＣｈｅｎＺｈｉ；Ｚｈｏｕ...     

盐藻和β-胡萝卜素研究述评

养殖盐藻生产β－胡萝卜素是近十几年新兴起的研究领域，因其应用前途广阔，现已成为微藻生物学的研究前沿和热点，预计本世纪末和下世纪初将有更大发展。鉴于我国在这方面文章不系统，不全面，本文从盐藻生物学，养殖学，β－胡萝卜素异构体，β－胡萝卜素形成生理等角度全面概念了该领域研究现状，并提出存在的问题与研究方向。     

长江河口硼的测定及分布规律研究

采用ＨＰＴＡ方法对长江口水中硼进行分析，并与姜黄素法进行比较，方法的标准偏差为０．００５，变动系数小于５％，对长江口水样分析结果与姜黄素法相比较，其相对误差为－０．４％。     

云贵高原湖泊沉积物─水界面碱度扩散通量研究

于１９９１－１９９５年间５次在云贵高原泸沽湖，洱海湖和贵州阿哈湖，百花湖的湖心采集沉积物柱芯，界面水和湖水样品，通过其ｐＨ值和ＨＣＯ３浓度剖面及界面碱度扩散通量的研究，首次定量评估高原湖泊界面扩散作用上不体碱度的影响程度，研究结果表明，云贵高原某些湖水寄宿时间对较长，湖水深度相对小的湖泊，界面扩散作用是水体碱度的重要来源之一，湖水寄宿时间较短，深度较小的湖泊，界面扩散对上覆水体的影响可以忽略不地。     

Morphology, reproduction, ecology and isoenzyme electrophoresis of Capitella complex in Qingdao

-Morphology, reproduction, ecology and isoenzyme electrophoresis of a Capitella complex in Qingdao were examined from 1983 to 1984. We determined that the Capitella complex in Qingdao was composed of at least three sibling species: Capitella cf capitata, Capitella sp. I and Capitella sp. IT. Although these three species are very similar in morphology, they differ in: three kinds of isoenzyme electrophoresis, staining reactions, developmental pattern, larval morphology and dispersal, reproductive strategies, breeding season and population ecology. In addition, they show a series of minor quantitative variations in adult morphology, especially in number and morphology of setae. Such differences can be detected only at the population level. Some ecological data such as density, growth rate, mortality and sex distribution are also provided in this paper.     

青藏高原东部多年冻土退化对环境的影响

退化是本区多年冻土变化的基本趋势，不同区段退化幅度有差异，影响退化的因素除了全球气候转暖外，还有局地气候和地下水迳流。在退化敏感的地带，工程建设，牧区生态平衡都有不可忽视的影响。     

薛家岛湾沉积动力学特征及海港开发研究

于１９９０年秋对胶州湾内的薛家岛湾进行海洋水动力条件及积动力学特征,泥沙运动规律研究,为开发建设港口提供科学依据。结果表明,湾内深大于１ｍ的海底泥沙发生“全面移动”的时间,一年内仅有１－２ｄ,其余处于稳定状态或“表面移动”状态。湾内泥沙来源很少,预计建港后,港池和航道年平均回淤量分别小于１６ｃｍ,１０ｃｍ对于开发中小型港口十分有利。     

中国对虾支原体的电镜研究

1990年7～8月,舟山地区的对虾养殖场暴发了流行性对虾黑鳃褐斑综合症,造成对虾大量死亡。作者根据这一病情,对病虾的主要器官组织进行了电镜观察。结果发现,病虾鳃丝细胞中有支原体感染。寄生部位为鳃呼吸上皮细胞的细胞质和核周腔。支原体多形态,呈近圆形、细长条形不等,无细胞壁,仅有单一膜包围,中心为一电子密度较低的区域。     

A new family of polychaeta-Euniphysidae

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.     

Practical implementation of Hilbert-Huang Transform algorithm

Hilbert-Huang Transform (HHT) is a newly developed powerful method for nonlinear and non-stationary time series analysis. The empirical mode decomposition is the key part of HHT, while its algorithm was protected by NASA as a US patent, which limits the wide application among the scientific community. Two approaches, mirror periodic and extrema extending methods, have been developed for handling the end effects of empirical mode decomposition. The implementation of the HHT is realized in detail to widen the application. The detailed comparison of the results from two methods with that from Huang et al. (1998, 1999), and the comparison between two methods are presented. Generally, both methods reproduce faithful results as those of Huang et al. For mirror periodic method (MPM), the data are extended once forever. Ideally, it is a way for handling the end effects of the HHT, especially for the signal that has symmetric waveform. The extrema extending method (EEM) behaves as good as MPM, and it is better t