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根据1983年9月,1984年4—5月,7—8月和12月4个航次采自南海中部0—200m水层的166份浮游动物定量样品,报道了南海中部管水母的种类、总个体数和优势种的季节变化和平面分布,并就其与环境的关系做了分析.着重讨论了近岸性生态类群的分布与近岸水的关系;大洋深水性生态类群的分布与底层水抬升的关系.认为,春季、夏季和秋季,影响调查区的近岸水源自爪哇海及巽它陆架;冬季,影响调查区的近岸水有广东近岸水和部分菲律宾近岸水.调查区西侧的次表层水终年有不同程度的涌升,属于大洋深水类群的北极单板水母在海区西侧终年可见.冬季和春季,除海区西侧外,北极单板水母在海区南部普遍出现,而在海区东北部,其在夏秋季仍有出现,但此时却完全消失,这正反映了冬春季海区南部底层低温水的抬升,以及进入海区东北部的西北太平洋次表层水的温度比南海中部相应水层偏高的特性的调查区的水环境状况.
Based on the quantitative samples of 166 zooplankton collected from 0-200m water layer in the middle of the South China Sea from September 1983 to April-May 1984, July-August and December 1984, the species of jellyfish in the middle part of the South China Sea were reported. The seasonal variation and the plane distribution of individuals and dominant species, and the relationship between them and the environment were analyzed.The relationship between the distribution of nearshore ecological groups and nearshore water was mainly discussed.The distribution of deep-water ecological groups in the ocean and the distribution of bottom water It is considered that in the spring, summer and autumn, the coastal waters affecting the survey area originate from the Java Sea and the Shelf shelf. In winter, the coastal waters affecting the survey area are Guangdong coastal waters and some Philippine coastal waters. Arctic veneer jellyfish belonging to the oceanic deepwater group can be seen all the year round in the west of the sea area. In winter and spring, in addition to the west side of the sea area, Arctic veneer jellyfish commonly occurs in the southern part of the sea area In the northeast of the sea area, however, it still appears in summer and autumn, but disappears completely at this time. This reflects the uplift of low-temperature water in the southern part of the winter and spring and the temperature ratio of sub-surface water in the northwest Pacific entering the northeast of the sea Central South China Sea phase Water Environment Survey areas of high water layer properties.