中文摘要：

根据在在 EastChina 海的从 1997～2000 的四个季节的普查( 23 掳3 0 鈥诧綖3 3 掳N ， 118 掳3 0 鈥诧綖1 28 掳E )， pteropods 的水平分发，他们的丰富的季节变异和这些变化的动态机制与量、质的方法被接近。结果证明全部的许多 pteropods 在秋天的减少的一份订单与季节清楚地变化了( 108 x 10 ~(-2) ind./m~3 )，夏天( 33 x 10 ~(-2) ind./m~3 )，冬季( 28x10 ~(-2) ind./m~3 )和春天( 10 x10~(-2) ind./m~3 )。没在华东海的向北近的岸观察的 Pteropodswere (29 掳 3 0 鈥诧綖 3 3 掳 N， 122 掳 3 0 鈥诧綖 1 25 掳 E ) 在冬季和春天。在所有季节， peteropod 丰富在北方并且更高比那在南方是更高的在比那近海在近的岸。影响 peteropod 丰富的主要种类是在春天，在夏天的 Creseis virgula，在秋天的 Desmopterus papilio 和在冬季的 Limacina trochiformis 的 Creseis acicula。翼足目的丰富的变化与表水温度和 10 m 显示出一道突出的线性相关水温，而是与底部水温和咸度的没有重要关联。Insummer， pteropods 的高丰富的分发区域位于 TaiwanWarm 水流从自台湾东面的菲律宾海流向日本的暖流分叉的地方。在秋天，有比 250x10 ~ 高的丰富的分发区域(-2) ind./m~3 在混合区域以内与台湾暖流一起向北方膨胀了在哪儿 Changjiang 淡水，福建—浙江沿海的水和 Huanghai 海 ColdWater 一起相遇了。水温和暖流是在华东海影响了翼足目的丰富的变化的最重要的环境因素。

英文摘要：

On the basis of the census in four seasons from 1997 to 2000 in the East China Sea （23°30＇-33°N, 118°0＇-128°E）, the horizontal distribution of pteropods, the seasonal variations of their abundance and dynamic mechanisms of these variations were approached with quantitative and qualitative methods. Results showed that the total abundance of pteropods varied clearly with the seasons in an order of decrease of autumn （108×10-2 ind./m^3）, summer （33×10^-2 ind./m^3）, winter（28×10^-2 ind./m^3） and spring （10×10^-2 ind./m^3）. Pteropods were not observed in the north nearshore of the East China Sea （29°30＇-33°N, 122°30＇-125°E）in winter and spring. In all seasons, the peteropod abundance was higher in the south than that in the north and higher in the offshore than that in the nearshore. The major species influencing the peteropod abundance were Creseis acicula in spring, Creseis virgula in summer, Desmopterus papilio in autumn and Limaeina trochiforrnis in winter. The variation of pteropod abundance showed a prominent linear correlation with the surface water temperature and 10 m water temperature, but no significant correlation with both the bottom water temperature and salinity. In summer, the high-abundance distribution area of pteropods was located in the place where the Taiwan Warm Current branched from the Kuroshio. Inautumn, thedistribution area with anabundance higher than 250×10^-2ind/m^3expanded northward along with the Taiwan Warm Current within the mixing area where the Changjiang freshwater, the Fujian-Zhejiang coastal water and the Huanghai Sea Cold Water met together. Water temperature and warm currents were the most important environmental factors that influenced the changes ofpteropod abundance in the East China Sea.