【摘要】 望虞河为太湖流域引水、泄洪综合治理骨干工程之一,贯通江苏省东太湖与长江。全长60.8km。穿越苏州、无锡、常熟经济发达区,受流域性经济发达区所伴随的热污染和有机污染影响。1986年9月至10月在全河流共完成18个点的浮游植物、浮游动物、透明度调查,并勘察和收集高等水生植物、蚌类、增养殖、捕捞、栏围养规模、渔业经济等有关样品和资料。全河流被明显地分成三个不同富营养型河段,其中重、中的二个富营养型河段渔业发达且受益,但在夏季的中富营养型西河段,水温超越38℃已成为渔业危险期和危险区。工程可改善富营养化程度和环境质量,但在渔业上依赖浮游生物为主的渔业产品结构可被高质高值的品种所替换。更多还原

【Abstract】 Wangyu River is affected by heat and organic chemical pol-lation from industrial zones. Samples of photoplankton and zoopiankton as well as samples for measuring water transparency were collected at 18 sampling stations in the riverto examine the levels of pollution. The corresponding samples of higher hydrophyte, freshwater mussels, and "intor-mation for extensive stocking and intensive culture, catching, scope of net cage culture, and fish culture economy were also gathered. The river could obviously be divided into three different trophic sections. Fish-culture is flourishing in eutrophic and mesotrophic sections. However, fish-culture in the west mesotrophic section was endangered in summer due to the high water temperature (>38℃).更多还原