菹草型水体的理化因子和水生生物状况

Physical, chemical and hydrobiological cheracteristics in waters with Potamogeton crispus

本文报道了菹草型水体的理化因子(水温、光照度、pH、溶氧、营养盐)和水生生物(浮游生物、底栖生物,附着生物,水生维管束植物)状况,又分别与无草水体进行了比较。作者还根据有关生态因子讨论了菹草夏季死亡的原因,并对菹草型水体的鱼产力进行了初步估算。

Physical, chemical factors (water-temperature in tensity of light pH value, dissolved oxygen and nutrient) and state of aquatic organisms (phyto-plankton, bethitic organisms, epiphyte and aquatic vascular flora)in waters with potamogeton crispus have been reported in this paper. These factors were compared with the waters without vegetation under otherwise equal conditions. The cause for mortarity of P. crispus was discussed in summer and the fish production in waters with P. crispus was estimated, according to ecological factors concerned.