摘要
2007年广东惠州西湖子湖-南湖采用水生植被构建和修复等措施改变湖泊水质。通过2010年2月至11月对南湖和未修复的平湖的浮游植物群落的调查比较,研究湖泊生态系统修复对浮游植物群落结构的影响。结果表明:(1)南湖的浮游植物多样性指数高于平湖,两者峰值分别为1.93(nit),0.88(nit),分别在8月和2月,两湖均呈现2、8月高峰,5、11月低谷的变化特征。(2)南湖的浮游植物群落呈隐藻-绿藻(四尾栅藻Scenedesmus quadricuda)-甲藻(多甲藻Peridinium sp.)变化模式,平湖则全年以蓝藻门占绝对优势,优势种为银灰平列藻(Merismipedia sp.)和湖丝藻(Limnolothix sp.)。(3)南湖浮游植物的生物量和细胞丰度的平均值均远低于平湖。由此可知,重建水生植被为主的生态修复手段是抑制浮游植物发展和改善湖泊水环境的有效途径。
Since 2007,a demonstration project of restoration by re-establishing macrophyte dominance has been carried out in order to improve water quality of Huizhou West Lake（Guangdong province）.Based on the investigation from February to November in restored area-Nanhu and un-restored area-Pinghu of Huizhou West lake,the phytoplankton community structures were compared to study the impact of lake restoration on the phytoplankton community.The results showed that,（1） In comparison with Pinghu,the diversity indices of Nanhu was higher,the maximum were 0.88（nit） in February and 1.93（nit） in August,respectively while the minimum were in May and November in both lakes.（2） Seasonal variation of dominant phytoplankton species were shown as follows： Cryptophyta-Chlorophyta（Scenedesmus quadricuda）-Pyrrophyta（Peridinium sp.） in Nanhu,however in Pinghu the Cyanophyta became dominant absolutly which did not changed significantly all around year,some species,such as Merismipedia sp.and limnolothix sp.became the most abundant species.（3） The mean biomass and cell densities were higher in Pinghu than that in Nanhu.Thus,the ecosystem restoration by re-establishing macrophyte dominance is an efficient way to control the development of phytoplankton and improve the aquatic environment of lakes.
出处
《生态环境学报》
CSCD
北大核心
2011年第4期701-705,共5页
Ecology and Environmental Sciences
基金
国家水专项东江项目(2008ZX07211-003)
广东省科技计划项目(2002C31611)
惠州市政府环保项目
关键词
浮游植物
群落结构
生态系统修复
惠州西湖
phytoplankton
community structure
ecosystem restoration
Huizhou West Lake
