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在两年的周期内,对秦皇岛4个砂滩的海洋线虫进行了6次芯样采集。灯塔、新煤码头、汤河口和北戴河赤土山4个砂滩均系分选好的细砂或中细砂,其中值粒径为140-285μm。对连续16个芯样计数的变异性所做的测试证明,1,2和3个芯样计算所得95％C.L.分别是0.539X—1.855X,0.647X—1.547X和0.700X—1.428X。秦皇岛砂滩海洋线虫的年平均密度:中潮带上区为1381±441 inds.10cm~(-2)。中潮带下区为1264±538 inds.10cm~(-2)。灯塔和新煤码头砂滩,8月出现高密度值,与温度的季节变化相符合,而汤河口则出现最低值,可能与污染物的大量排出有关。多数砂滩的大部分芯样显示了明显的重直分布,即种群数量的大部分集中在芯样顶部的两个分层:0～4和5～8cm。没有发现垂直分布的季节变化趋势。与世界其他海区砂滩的资料进行了比较。
During the two-year cycle, 6 samples of marine nematodes were collected from 4 sandy beaches in Qinhuangdao. The lighthouse, the new coal terminal, Tanghekou and Beidaihe, the three sandy beaches are sorted fine sand or fine sand, the median particle size of 140-285μm. Testing of the variability of 16 consecutive core sample counts demonstrated that 95% of C.L. calculated for 1, 2 and 3 core samples were 0.539X-1.855X, 0.647X-1.547X and 0.700X-1.428X, respectively. The annual average density of marine nematodes in Qinhuangdao sand beach was 1381 ± 441 inds.10cm ~ (-2) in the upper tidal zone. The tidal zone was 1264 ± 538 inds.10cm ~ (-2). The beacon and the sand beach of the new coal terminal showed a high density in August and coincided with the seasonal change in temperature, while the lowest in Tanghekou, which may be related to the massive discharge of pollutants. Most of the core samples of most sand beaches show a pronounced redistribution, ie most of the population is concentrated in two layers at the top of the core sample: 0-4 and 5-8 cm. Did not find the vertical distribution of seasonal changes. Comparisons were made with the information on the sand beaches in other parts of the world.