龙眼园节肢动物群落结构研究

本文报道了龙眼园节肢动物群落结构特征，采用Shannon-Wiener指数、Simpson指数、Brillouin指数、物种丰富度指数、物种均匀度以及物种优势度指数分析群落多样性，采用群落相似度指数对不同时期的群落相似性进行了分析, 运用5种聚集度指标和2种回归分析方法对龙眼园2种主要害虫的空间分布型和抽样技术进行了研究。本次调查共有节肢动物13种，分属7 目12科。总的来看, 各畦间的节肢动物群落多样性指数差异不大。从水平方向来看，各畦的相似水平相差较大，说明节肢动物水平分布极不平衡; 从垂直空间水平来看，上部与中部间、中部与下部均为中解等相似水平，而上部与下部为极不相似水平。龙眼园两种主要害虫均呈现为聚集分布。

The community structure of arthropod in longan field

This paper reported arthropods community structure of longan field.In analyzing the data,the Shannon-Wiener index,Simpson index,Brillouin index,species evenness and richness indices were used to study the distributional trends of community structure,dominant species and abundance of longan field.The spatial distribution pattern of 2 pests of longan were analyzed with Taylor ’s power law,Iwao ’s distribution function,and 5 aggregation indexes.A total of 13 species arthropod animals were obtained from longan field,of which belonged to 7 orders and 12 families.In a word,the diversity indexes of community structure were in similar level.Horizontal community comparability index was in significant difference level,vertical comparability index were in level of middling comparability between upside and middle part,middle part and down-part.And it was in level of great incomparability between upside and down-part.The results showed that the spatial distribution pattern of two pests were of aggregated.