It is likely that the successful nationwide reforestation and the increased temperature would greatly change butterfly fauna in South Korea. We compared current data (2002~2007) regarding abundance and presence of butterfly species at two sites in the central portion of the Korean Peninsula with past data from late 1950s and early 1970s for the same sites. In the previous study, we represented that the changes of abundance (i.e. increase of northern species, and forest species) were caused by influence of two environmental changes. Using the same data, abundance of the greatly changed species and occurrence of species were analyzed. Changes of abundance of 99 butterfly species which occurred at both sites were significantly correlated between two sites. The most increased species included three Southern (S) species and one Northern (N) species, while the most declined species composed of five N species without S species. Changes on the greatly changed species were documented on the review with other studies. The binary data (presence/absence) in present study support the significant impacts of global warming and reforestation on butterfly fauna. The interactive effect of global warming and reforestation was also significant on the base of the binary data.