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本文研究1994年春、秋季东海陆架海区水体POC的分布特征。0和10m层的水平分布图呈现：近岸海区水体的POC含量最高，并往外海递减，黑潮区域是POC的低值区。在离岸通的深水海区受长江径流影响削弱，POC分布比较均匀。秋季POC等值线呈现与岸平行并往外海递减，这是受陆地径流、海区生物活动所控制。春季POC的分布呈现受水团推移的迹象，在PN线上的406－408－411站位附近海区出现POC高值区，与表层水叶绿素a高值区的位置相吻合。垂直分布图显示：近岸浅海水域由于上下水体混合均匀，水体POC分布比较一致。外海深水区域POC呈现表层高，并往底层衰减。接近底层的部分水体受底部沉积物再悬浮的影响，POC含量略有起伏。水深20或35m以深的水体POC含量（以碳计）在60～40μg／dm3间。海域的2个典型站位（111、410站）周日连续观测表明，春、秋季水体上部真光层的POC含量的最高值都出现在深夜24：00，而表层海水的叶绿素a都在傍晚18：00出现最高值。可见，水体POC的分布明显受海区物理、化学和生物活动的影响。
This paper studies the distribution of POC in the East China Sea shelf waters in the spring and autumn of 1994. The horizontal distribution of the 0 and 10 m layers shows that the POC content of the coastal waters is the highest and declines to the outside, and the Kuroshio area is the low POC area. Affected by the runoff from the Yangtze River, the POC distribution was more evenly distributed in the off-shore water area. Fall POC contour line parallel with the shore and sea descending, which is controlled by land runoff, sea biological activities. The distribution of POC in spring showed a sign of water mass shift. The high POC value appeared in the sea area near the 406-408-411 station on the PN line, which coincided with the location of chlorophyll a in the superficial water. The vertical distribution shows that the coastal POC distribution is consistent because of the uniform mixing of upper and lower water bodies in shallow coastal waters. The POC in the deepwater offshore area shows a high surface layer and decays toward the bottom. The part of the water near the bottom is affected by the resuspension of the bottom sediment, and the POC content fluctuates slightly. The water POC content (in terms of carbon) between 20 and 35 m deep is between 60 and 40 μg / dm3. Continuous observations at two typical stations (111 and 410 stations) in the sea area showed that the highest POC content of the upper true euphratic layer in spring and autumn occurred at 24:00 in the middle of the night, while the chlorophyll a of surface seawater was at 18 : 00 The highest value appears. Obviously, the distribution of POC in water bodies is obviously influenced by the physical, chemical and biological activities in the sea area.