【摘要】 海河是流经天津市的主要河流。本文报道了1984年5月和9月两次对海河干流5个站位的浮游动物调查的结果。两次采样共获浮游动物40种。海河干流的氯度变动幅度大,从上游Ⅰ站到下游Ⅴ站变动幅度为0.058—2.204克/升。因此,所获浮游动物中,多数优势种类是广盐性种类。而且,从上游至下游各站位的种类数和个体数随着氯度的增高而减少。同时,还讨论了其他影响海河浮游动物种类分布和变动的因素。更多还原

【Abstract】 Zooplankton samples were collected in the main stream of Haihe River between May and September 1984. 40 species were identified. The dominant species are euryhalinous species, which reflects the relatively high chlorinity between 0.058—2.204g/l. in the river. The number of species and total individuals of zooplankton decrease with the increasing chlorinity from the upper to the lower reach. Other factors affecting the distributions and fluctuations of zooplankton are also discussed.更多还原