青藏高原柴达木盆地盐湖原生动物群落生态特征研究

Gahai Salt Lake that is situated in the Qaidam Basin of Qing-Tibet Plateau is a saline lake with the high salinity and the abundant biological resources of Artemia( brine shrimp), with an elevation of 2849.6m above sea level. Qinghai Lake is the largest salt lake with the area of 4400km2 in China. An investigation on the characteristics of community diversity of plankton and protozoa with relation to salinity was conducted in the summer of 1997-2001. Forty-six species of phytoplankton and fifteen species of zooplankton including 8species have been identified in the major body of water in the in-lake area with 22 sampling sites at 5 sections in Gahai Lake. 38 species of protozoa have been founded first in the Qinghai Lake.The differences of the species composition, richness , individual abundant and biomass of plankton were compared between two sampling area with a big change of salinity in the waters. PFU colozing rates also were composition in the both lakes.The results show that the salinity is an important limiting factor in determining the structure of biological communities in the inland saline lakes.

研究青藏高原柴达木盆地典型盐湖生态系统原生动物群落结构与功能特征；探讨原生动物群落的变化趋势和演替规律及其与生物和非生物环境之间的相互关系；通过比较研究，分析不同水化学类型对原生动物群落的影响以确定其对盐度的适应范围。本项目为深入研究青藏高原盐湖生态系统演变过程及与环境之间的相互关系和资源的利用与保护提供科学依据。