| 摘要: |
| 初步研究了在低洼盐碱地池塘中光合细菌 (PSB)施用后对浮游生物的影响.研究结果表明:(1)光合细菌的施入,促进了浮游植物中蓝藻门、绿藻门、隐藻门、裸藻门的数量和生物量的增长;硅藻门总体上有所下降,但小型种属增加;(2)光合细菌的施入,促进了浮游生物中枝角类、轮虫,尤其小型轮虫的增长,而桡足类和原生动物却表现出下降趋势;(3)浮游生物总体上表现为数量增加而生物量下降,但绝大部分种属均有不同程度的增加,而且浮游生物种类趋向于小型化,从而增加了鱼类有效的天然饵料,因而光合细菌的施入,可以调整并优化盐碱地池塘的浮游生物的群落结构. |
| 关键词: 光合细菌(PSB) 池塘 盐碱地 浮游生物 |
| DOI：10.18307/2002.0113 |
| 分类号: |
| 基金项目:国家"九五"科技攻关项目(95-008-04-02) |
|
| Effects of PSB to Plankton in Saline-alkili Wetland Ponds |
|
LIU Fujun1, HU Wenying2
|
|
1.Key laboratory of ecology and physiology in aquaculture Ministry of Agriculture Shanghai Fisheries University,Shanghai,200090 P. R. China;2.Nanjing institute of Geography and Limnology,Chinese Academy of Sciences Nanjing 21000& P. R. China
|
| Abstract: |
| The reseaich on improving efficiency of PSB to plankton structure in low-lying saline-alkaline wetland ponds showed that PSB could enhance the number and the biomass of Cyanophya Cyptophyta Euglenophyta and Cryptophyta.Although Bacillariophyto dropped a little in general the small-type species increased.Moreover,PSB could enhance the number and the biomass of Cladocera and Rotifera especially those of the small-type Rotiferus.But those of Capepoda and Protozoa displayed a dropping tendency.Generally plankton displayed increases of numbers and decreases of biomass.Most species of plankton appeared certain increase,small-size geneses of plankton appeared more common than great-size ones which incrased the feed effect for fishes.In conclusion PSB could adjust and improve the structure of plankton community in saline-alkali wetland ponds. |
| Key words: PSB Low-lying saline-alkali wetland ponds plankton |
