摘要：为研究杨树林鳞翅目蛾类昆虫群落的结构状态和功能，于2011年6月至11月采用灯诱（灯光诱杀）的方法对南京晓庄学院杨树林3个样点的鳞翅目蛾类资源进行调查。应用多样性指数、均匀度、优势度、相似性系数等指标对杨树林样点的蛾类的多样性进行分析[1]。结果表明：杨树林共有蛾类1203只，隶属13科59属62种；其中夏季有382只，隶属13科51属54种；秋季有821只，隶属12科55属58种。夏季蛾类多样性指数为1.49103，均匀度指数为0.02711，优势度为0.25807，丰富度指数为13.0841；秋季蛾类多样性指数为2.7026、均匀度指数为0.04660、优势度指数为0.27420、丰富度指数为13.8110，明显秋季的各种指数都高于夏季。各月蛾类多样性指数趋势与均匀度指数、丰富度指数趋势一致，与优势度指数趋势相反。

关键词：南京；杨树林；夏季；秋季；蛾类；多样性

Abstract: For research on structure and functions of lepidoptera moth, a research has been conducted during June to November 2011 by adopted light trap method in 3 sampling points in poplars of Nanjing Xiaozhuang University. The moth diversity in 3 sampling points is analyzing according to diversity index, uniformity, dominance, similarity etc [1] .Results: The moth numbers in poplars is 1203 which belongs to 13 families 59 genera and 62 species: 382 moth in summer which belongs to 13 families 51 genera and 54 species and 821 moth in autumn which belongs to 12 families 551 genera and 58 species.Diversity index in summer is 1.49103, uniformity index is 0.02711, dominance index is 0.25807 and species richness index is 13.0841; In autumn, the diversity index is 2.7026, uniformity index is 2.7026, dominance index is 0.27420 and species richness index is 13.8110. The result is the indexes in autumn is higher than that in summer; diversity, diversity index and evenness index, richness index trend is consistent, and the dominance index is the opposite.

Key words: Nanjing；poplar；grove；Summer；Autumn；moth；diversity