摘要： 白音花水库冰下有菹草、扇叶水毛莨、聚草及金鱼藻等几种水生维管束植物存活，其生物量变动在10～3760g/m²,以菹草居绝对优势（占有草区面积80%以上）,其次为聚草、金鱼藻，而扇叶水毛莨仅零星分布。通过黑白瓶测定，单位时间每克水草产氧量大小依次为菹草、扇叶水毛莨、聚草及金鱼藻，相应的各自光合补偿点分别为100lX、175lx、160lx及150lx.

关键词: 冰下水体, 水生维管束植物, 产氧量, 光合补偿点, 生物量

Abstract: Some hydrophilic fibrovascular plants living under the ice of Baiyinhua reservoir such as Potamogeton crispus, Myriophyllum spicatum,Ceratophyllum demersum,Batrachium bungei were observed.The biomass of these plants varied from 10 to 3760 g / m2,and according to the area occupied by each of the plants their order was as follows:Potamogeton crispus>Myriophyllum spicatum>Ceratophyllum demersum>Batrachium bungei.The result of test with black-white bottle showed that Potamogeton crispus gave the greatest amount of oxygen (1 g of hydrophilic plant per unit time), followed by Batrachium hungei,Myriophyllum spicatum,Ceratophyllum demersum accordingly.The supplementary point of photosynthesis is 100 1x,175 1x,160 lx and 150 lx,respectively.

Key words: Water body under ice, Hydrophilic fibrovascular plants, Supplementary point of photosynthesis

中图分类号: 

• Q948.34