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根据2000年秋季和2001年春季在南黄海24个大面站进行的大型底栖生物定量采集样品资料,利用Brey’s(1990)的经验公式对调查海区进行了大型底栖生物栖息密度、生物量、次级生产力和P/B值的研究计算.结果表明,该海域大型底栖生物平均栖息密度在2000年秋季为154.2个/m2,与2001年春季的147.8个/m2相当,平均生物量以去灰干重计,秋季为6.92g/m2,远高于春季的2.81g/m2;年平均次级生产力以去灰干重计,为4.98gm-2a-1.与生物量的分别格局相似,次级生产力在所调查海域的西南和东南部有两个高生产力分布区域,而该二区域正好在黄海冷水团的两侧,由此验证大型底栖生物的生物量和次级生产力受海水温度的影响较大.平均P/B值在研究海域为1.10a-1.与渤海研究结果比较,证明了底栖生物群落生产力随水深增大而下降,P/B值随水温升高而升高.图2表2参31
Based on the quantitative data of meiofauna collected from 24 large stations in the South Yellow Sea in autumn of 2000 and spring of 2001, the habitat density, biomass, Secondary productivity and P / B were calculated.The results showed that the average macrobenthos habitat density in the sea area was 154.2 per m2 in the autumn of 2000, equivalent to 147.8 per m2 in the spring of 2001. The average biomass went to Ash dry weight, 6.92g / m2 autumn, far higher than the spring 2.81g / m2; annual average secondary productivity to ash dry weight, 4.98gm-2a-1 and the biomass of the pattern similar, Secondary productivity There are two regions of high productivity distribution in the southwest and southeast of the surveyed sea area, which are located on both sides of the Yellow Sea cold water mass, which verifies that the biomass and secondary productivity of macrobenthos are affected by seawater temperature The average P / B value is 1.10a-1 in the study sea area.Compared with the Bohai Sea research results, it is proved that the productivity of benthic community decreases with the increase of water depth, and the P / B value increases with the increase of water temperature Figure 2 Table 2 参 31