442 species of butterflies have been found in Nanling National Nature Reserve,some of which are new records and new species in China.For them,339 species inhabite in evergreen broad-leaved forest;369 species in mountain evergreen broad-leaved and coniferous mixed forest,and 71 species in mountain top mossy evergreen broad-leaved forest.The numbers of butterflies belonging to the Oriental region,the Palearctic region and spreading in different flora are 360,48 and 34,or accounting for 81.45%,10.86% and 7.69% of the total,respectively.The butterfly fauna in Nanling is very similar with that in Fujian province,sharing 77.27%,indicting that these butterflies in those two sites have the same origin and evolutionary process.In Feb.,2008,the ice storm caused severe damages to the forest ecological systems of Nanling located from 500 to 1 000 m above the sea level.The population density of all kinds of butterfly decreased badly.The number of butterflies living in forests from 700 to 800 m above the sea level represented only 23 percent of which from 1 100 to 1 200 m above the sea level.Generally,the population density of all kinds of butterfly was really low;the decreasing rate was about 90% compared with the past years.The number of Papilionidae population in the surveyed sites was only 37.5% of that found in the past common years.