摘要
加拿大一枝黄花(Solidago canadensis)作为近年来我国外来入侵植物,在我国东部地区广泛分布。试验采用连续小样方法调查了加拿大一枝黄花在不同定居阶段和生境中的盖度,并以盖度为指标进行了其种群的分布格局研究。结果表明,加拿大一枝黄花种群呈明显的集群分布,随着其在新生境中定居年限的增长,其种群斑块呈由少→多→少的变化趋势;强大的无性繁殖能力是加拿大一枝黄花种群扩张和侵占生境的有力武器,其单优种群可连绵数千米。
Solidago canadensis,as a recent invasive plant of China,is widely distributed in East China.The coverage of S.canadensis in different resident stages and environment was investigated by sequential small sampling method,and the population distribution pattern was studied using the index of the coverage.The result showed that the distribution pattern of S.canadensis belonged to clumped type.And with the increasing of ages in the new resident environment,its population plaques displayed such trend as little-much-little.The strong asexual reproduction ability was a powerful weapon for S.canadensis to expand its population and invade habitats so that its dominant population could extend for thousands of meters.
出处
《湖北农业科学》
北大核心
2011年第18期3732-3734,共3页
Hubei Agricultural Sciences
基金
浙江省教育厅项目(20061564)
