【摘要】 于2002—2003年夏、秋、冬季和春季分别对扩建前的英那河水库非生物环境、生物群落和渔产力进行了调查。结果表明:英那河水库属于富营养型,N∶P值达62.62,属于磷限制型水库;浮游植物共有151个种属,密度为2.5×107个/L,生物量为10.58 mg/L,以硅藻和绿藻占优势,叶绿素a含量为15.31μg/L;浮游动物共见到83个种属,密度为992个/L,生物量为4.21 mg/L,以枝角类和桡足类为主;超微藻类的密度为(0.73~5.80)×107个/L;浮游细菌总数为2.57×107个/L,夏季最高,达5.78×107个/L;异氧菌密度平均为2.53×106个/L;底栖动物5种,密度平均为471个/m2,生物量为1.21 g/m2,以粗腹摇蚊幼虫和水丝蚓占优势;共有水生维管束植物2种,鱼类39种,软体动物2种。此外,还对英那河水库的水质类型、营养状况和鱼产力进行了讨论。更多还原

【Abstract】 The water quality,communities of aquatic organisms and evaluation of fishery productivity were studied in Yingnahe Reservoir in summer,autumn,winter and spring from 2002 to 2003.The Yingnahe Reservoir as a phosphorus limiting reservoir was found to be eutrophication waters with N∶P ratio of 62.62.A total of 151 taxa of phytoplankton and 83 taxa of zooplankton were identified in Yingnahe Reservoir.There were abundance of phytoplankton of 2.5×107 ind./L and biomass of 10.58 mg/L.The diatom and green algae were of the predominant phytoplankton species.The abundance of total zooplankton was 992 ind./L and the biomass of 4.21 mg/L.The predominant zooplankton were cladocera and copepoda.The density of picoplankton reached(0.73-5.80)× 107 ind./L,and the total abundance of bacteriaplankton 2.57×107 ind./L,the peak in summer(5.78× 107 ind./L).There was 2.53 ×106 ind./L of heterbacerria.Five taxa of benthos were identified with mean density of 471 ind./m2 and biomass of 1.21 g/m2.The predominant species were Pelopia and Limnodrilus hoffmeisteri.Two species of water macrophytes,39 fish species and 2 shellfish species were distributed in Yingnahe Reservoir.The eutrophic situation,and fishery productivity were discussed.更多还原