氯化物型盐碱池塘浮游植物种类和多样性的研究

STUDIES ON THE SPECIES COMPOSITION、BIOMASS AND SPECIES DIVERSITY OF PHYTOPLANKTON IN SALINE-ALKALINE PONDS WITH CHLORIDE TYPED

摘要: 1997年4月5日至1998年9月1日对山东高青县赵店乡渔场盐碱池塘浮游植物的种类组成和生物量进行了研究,池塘盐度变动于1.36—20g/L,总碱度变动于2.4—7.2mmol/L,pH值8—9。采集了387个浮游植物定量水样。结果表明,高青盐碱池塘浮游植物主要是广盐性淡水种类,一些是典型的盐水种。浮游植物的平均生物量为49.90±31.92mg/L,硅藻和裸藻占优势,金藻占有相当比重。无鱼对照池的浮游植物生物量较养鱼池塘低得多。

Abstract: From 5 April 1997 to 1 September 1998,the species composition and biomass of phytoplankton were studied in saline-alkaline ponds in Zhaodian Fish Farm,Gaoqing County,Shandong Province. 387 phytoplankton samples were collected. Salinity ranged from 1.36-20g/L. Total alkalinity changed from 2.40-7.2 mmol/L,and pHranged from 8-9. The results indicated that the phytoplankton in saline-alkaline ponds had been composed of salt-tolerance species or halophile species,which occurs commonly in freshwater,some of them are halobiont species. The average biomasses of phytoplankton were 49.90?1.92mg/L.Diatom,Euglinophyta and Chrysophyta were dominant. The biomass of phytoplankton in control ponds without fish was fewer than that of fish-culture ponds. The features of species composition and biomass were discussed.