生态环境学报Issue(10)：1668-1675,8.DOI:10.16258/j.cnki.1674-5906.2015.10.012
乌梁素海浮游植物功能群季节演替规律及影响因子
Seasonal Succession of Phytoplankton Functional Groups and Their Relationship with Environmental Factors in Wuliangsuhai Lake
摘要
Abstract
Phytoplankton functional groups plays an important role in aquatic ecosystems. Phytoplankton can produce oxygen and food, which sustain all other life forms, ensuring aquatic ecological balance. Information about phytoplankton functional groups related to environmental conditions in Cold and Arid Regions is little. Wuliangsuhai Lake is located in cold and arid regions of Inner Mongolia and is a typical grass algae lake. To explore the characteristics of phytoplankton functional groups related to environmental conditions, phytoplankton were collected and analyzed from June 2011 to August 2013, and they were analyzed using Excel and species-environmental factors biplot. The results showed that twenty-three common functional groups were found in Wuliangsuhai Lake. In the above function group C, MP, W1 and X2 appeared the most frequent, and had the largest proportion in dominant functional groups. C and MP were the dominant species in the whole year, especially in the relatively low temperature winter, as well as spring and autumn. L0 and J were the dominant species in spring and summer. TC was the dominant species in summer. X2 was the dominant species in autumn and winter. W1 hold a large proportion in winter. Functional groups had significant spatial differences. The spatial variance of functional groups was central lakes > southern lakes > lakes entrance. Redundancy analysis showed that correlation between phytoplankton functional groups and environmental factors were more than 0.9, cumulative variance of species and environmental variables is 83.6%. Lake water depth, temperature, pH and other environmental factors were the main driving factors on seasonal dynamics of phytoplankton functional groups. Combined with the actual environmental characteristics in Wuliangsuhai Lake, functional groups were divided into three categories and respectively as shown below:Functional groups were S1, MP, W1 and C which located in shallow water with high salinity. Functional groups were P, L0, X1, F and J which located in high temperature deepwater with low-nutrient. Functional groups were X2, TC and Y which is located in low temperature water with high nutrient.关键词
寒旱区/浮游植物,功能群/季节动态Key words
cold and arid regions/phytoplankton/functional groups/seasonal dynamics分类
资源环境引用本文复制引用
李兴,李建茹,徐效清,白旭亮..乌梁素海浮游植物功能群季节演替规律及影响因子[J].生态环境学报,2015,(10):1668-1675,8.基金项目
国家自然科学基金项目（51469026）；内蒙古青年科技英才计划（NJYT-15-B09）；内蒙古人才开发基金项目 （）
