江西省鄱阳湖自然保护区昆虫区系初探

DPrimary discussion on the fauna of insects in Poyang Lake Nature Reserve

据对有较详细分布资料的２２０种昆虫的分析，鄱阳湖自然保护区昆虫属东洋界范畴，但已接近古北界南缘；昆虫种类形成了古北，东洋两大区系成分交叉重叠现象，亦是两大区系交叉过渡地带。在我国东部地区，与鄱阳湖共有种的分布规律为随着纬度的增高而递减。本文论述了鄱阳湖３３种昆虫在我国东半部分布的南北限。

Based on an analysis of the 220 species of insects recorded with data in detail, the insects of Poyang Lake are regarded to belong to the fauna of Oriental Region, but near the south border of Palaearctic Region. The insect species from the overlapping of the two faunas, Oriental Region and Palaearctic Region, and from a transit zone between the two faunas. In east China, the distribution of the insects, which are the same species as Poyong Lake, reduces with a rising of latitude. This paper also deals with the south and north limit of the distribution of 33 species of Poyang Lake insects in east China.