棉蚜和草间小黑蛛种群空间格局的地统计学研究  

Geostatistic analysis on spatial patterns of Aphis gossypii and Erigonidium graminicola

作　　者：李磊[1] 邹运鼎[1] 毕守东[1] 高彩球[1] 丁程成[1] 孟庆雷[1] 李昌根[1] 周夏芝[1] 

机构地区：[1]安徽农业大学

出　　处：《应用生态学报》2004年第6期1043-1046,共4页Chinese Journal of Applied Ecology

基　　金：安徽省农业综合开发项目 (NFZ 2 0 0 1 15 11);安徽省教育厅基金资助项目 ( 2 0 0 2KJ10 1)

摘　　要：应用地统计学的原理和方法研究了石榴园不同时期棉蚜及草间小黑蛛种群的空间结构和空间相关性 .结果表明 ,不同时期棉蚜种群的半变异函数曲线皆为球型 ,其空间格局为聚集型 ,变程在 7 33～1 2 4 0cm之间 ;草间小黑蛛种群的拟合半变异函数曲线也表现为球型 ,呈聚集空间格局 ,空间变程在 6 4 7～ 2 0 88cm之间 ,并与棉蚜种群在数量和空间上有较强的追随关系 ,说明草间小黑蛛种群是棉蚜种群的优势种天敌 .The spatial structure and spatial correlativity of Aphis gossypii and Erigonidium graminicola populations during different periods were investigated by geostatistic methods.The results showed that the semivariogram of A.gossypii appeared as spherical type,indicating its spatial pattern was an aggregated type with a range of 7 33～12 40 cm,while that of E.graminicola was also fitted into spherical model,indicating an aggregated spatial arrangement with a range of 6 47～20 88 cm.The amount and spatial distribution of E.graminicola were closely related to those of A.gossypii ,suggesting that E.graminicola was the dominant natural enemy influencing A.gossypii population.

关 键 词：棉蚜 草间小黑蛛 空间格局 地统计学 

分 类 号：S476[农业科学—农业昆虫与害虫防治]