Abstract
群落物种组成及种群分布格局特征是揭示种群发展趋势及与环境相互关系的基础.以滇西北剑湖湿地海菜花群落为对象，采用样方法与扩散系数法对其物种组成与种群分布格局进行研究.结果表明：群落共有物种18种，分属12科、14属，包括沉水、漂浮、浮叶及湿生4类生活型；海菜花（Ottelia acuminata）和马来眼子菜（Potamogeton malaianus）呈集群分布，其余种群呈随机分布；海菜花种群聚集度最大，接近最大集群分布.保育海菜花种源、开展流域和生境治理以减缓湖泊沼泽化进程，是目前剑湖海菜花群落保护的当务之急.
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