| 摘要: |
| 南岭是南北动植物的分界线、起源和分化中心，生物资源十分丰富，巳发现斑蝶15种，环蝶8种,其种群数位居我国各保护区之首，分布于东洋区的斑蝶和环蝶占总数78.26%；东洋区和古北区共有种1种；跨区系分布的有4种。南岭斑蝶和环蝶与海南蝶类相似百分率分别高达77.27%和75.0%，说明它们主要由热带区域扩散而至。今年初的雨雪冰冻灾害使南岭海拔500-1000m森林生态遭受严重破坏，斑蝶和环蝶在林中的种群密度骤降，5次调查累计只发现的斑蝶和环蝶7种,只占常年见到的30.43%;种群密度则是南岭各科蝶类中居最低。 |
| 关键词: 斑蝶科；环蝶科 区系； 雨雪冰冻；种群密度 |
| DOI： |
| 分类号: |
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| The flora of the Danaidae and the Amathusiidae in Nanling forest area and the menace effect of snow disaster to them |
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Gu Mao-bin
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| Abstract: |
| Nanling is the division, original and differentiation centre for the southern and northern animals and plants, with rich biological resource. So far, it has discovered 15 species Amathusiidae, and 8 species Danaidae here, which population quantity is the first place in each reservation of our country. The number of Danaidae and Amathusiidae distributing in oriental region takes a total of 78.26%. And there is 1 species in common between oriental and palearctic region; there are 4 species striding in different flora. The similarity percentages between Nanling Danaidae and Hainan butterfly, Amathusiidae and Hainan butterfly runs up to 77.27% and 75.0%, those indicates that they are mainly because of the tropic zone spreading. The snow disaster at the beginning of 2008 caused severe damage to the forest at the sea level of 500m-1000m; this leaded to the number of Danaidae and Amathusiidae decreasing critically. It discovered only 7 species Danaidae and Amathusiidae in the five surveys, and it took merely 30.43% in the past year; the population density of them housed the lowest place in each species in Nanling. |
| Key words: Danaidae Amathusiidae Flora Snow disaster Population density |
