中文摘要：

根据在 23 ° 3 0' ～的四季节的调查 33 ° N and118 ° 3 0' ～从 1997 ～ 2000 的 Easl 中国海的 128 ° E， Calanussinicus 的季节的分发与聚集紧张，回归贡献和另外的统计法被学习。它被推断那 C。sinicu 是从冬季介绍给夏天的 s 优势，特别在春天和夏天，因为它的优势等于 0。62 和 0.29 分别地。它在桡脚类的动物丰富的丰富的百分比在夏天是 76.71% ，比 66 大。60% 在春天，比 19.02% 大在冬季，比 4.02% 大在里面秋天。在冬季和春天的出现频率是 83.08% 和 93。89% ，比那高在夏天和秋天， 76.71% 和 73。87% 。与桡脚类的动物的另外的优势种相比， C。sinicu 对桡脚类的动物丰富的 s 贡献显然比在冬季，夏天和春天的另外的种类的大，但是在秋天更小。C。中国我们趋于有聚集的分布。clumping 索引在夏天达到顶点(50。19 ) ，在春天列在后面(19。60 ) ，在秋天衰退了(13。18 ) 并且在冬季(3.04 ) 是最低的。丰富在不同季节和区域变化了，关于在春天和秋天的温度然而并非咸度，到在夏天的咸度然而并非温度；到在冬季的既不温度也不咸度。在春天和夏天，它的高丰富区域经常位于台湾暖流， Huanghai 海冷水团，沿海的水群众和 Changjiang 形成的混合水团冲淡水。在春天和秋天，它的丰富被暖流影响，以及从大陆河的流量在夏天影响了它。它能被推断那 C。中国我们被使适应宽咸度和温度，，在华东海的 euryhalinous 和 eurythermousspecies。

英文摘要：

On the basis of the four-season investigation in 23°30′ ~ 33°N and 118°30′ ~ 128°E of the East China Sea from 1997 to 2000, the seasonal distribution of Calanus sinicus was studied with aggregation intensity, regression contribution and other statistical methods. It was inferred that C. sinicus＇ s predominance presented from winter to summer, especially in spring and summer, because its dominance amounted to 0.62 and 0.29 respectively. The percent of its abundance in copepod abundance was 76.71% in summer, greater than 66.60% in spring, greater than 19.02% in winter, greater than 4.02% in autumn. The occurrence frequency in winter and spring was 83.08% and 93.89% , higher than that in summer and autumn, 76.71% and 73.87%. Compared with other dominant species of copepods, C. sinicus＇ s contribution to the copepod abundance was obviously greater than that of the other species in winter, summer and spring, but smaller in autumn. C. sinicus tended to have an aggregated distribution. The clumping index peaked in summer （50.19） , followed in spring （19.60） , declined in autumn （13.18） and was the lowest in winter （3.04）. The abundance changed in different seasons and areas, relating to temperature but not salinity in spring and autumn, to salinity but not temperature in summer; to neither temperature nor salinity in winter. In spring and summer, its high abundance area was often located in the mixed water mass formed by the Taiwan Warm Current, the Huanghai Sea Cold Water Mass, the coastal water masses and the Changjiang Dilute Water. In spring and autumn, its abundance was affected by the warm current, as well as the runoff from continental rivers affected it in summer. It can be inferred that C. sinicus was adapted to wide salinity and temperature, as a euryhalinous and eurythermous species in the East China Sea.