【摘要】 利用地统计学方法,在GIS平台下研究南大港湿地东亚飞蝗Locusta migratoria manilensis(Meyen)和芦苇(Phragmites australis)种群的空间格局及两者间的关系。结果表明,研究区域内飞蝗、芦苇种群均具有较强的空间相关性,变异函数曲线都为球状模型,空间自相关范围分别为502m和814m。其次,飞蝗主要集中分布在研究区域内芦苇长势较差(30~70棵.m-2)的东北部和东南部地块,而在长势较好的西部(>120棵.m-2)、南部(70~120棵.m-2)和极差的北部(<30棵.m-2)几乎没有蝗虫的分布,且蝗虫种群数量与芦苇密度存在显著的相关性。更多还原

【Abstract】 The spatial distribution pattern of reed and Locusta migratoria manilensis(Meyen)were studied.The results showed that the both distribution patterns were best described using spherical models,which had spatial autocorrelation at distances about 502 m and 814 m,respectively.Locusts mainly located in northeast and southeast areas with worse reed conditions(30～70 individuals·m-2),but were rarely found in west and south areas with better reed conditions(>120,70～120 individuals·m-2 respectively)and in north areas with the worst reed conditions(<30 individuals·m-2),which showed significant correlation between locust disrtibution and reed densities.更多还原