Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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Abundance of Breeding Birds in Relation to Forest Environment in Jirisan National Park

지리산국립공원의 산림환경에 따른 번식조류의 풍부도

  • Published : 2008.06.30
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Abstract

This study was conducted to investigate abundance of breeding birds in relation to forest environment, to figure out the influential factors in abundance of breeding birds and to get the basic data for effective management of the bird community in Jirisan National Park. For this purpose, this research selected 4 main hiking trails as survey points and conducted a survey on breeding bird species and forest environment from April to August in 2007. The study results are as follows: The number of the birds observed during the breeding season was 33 species at the elevation of 300 meters to 1,900 meters. This research made a regression analysis of 13 bird species appearing at more than 30% of all surveyed points, species richness, and richness in the number of individuals. As a result of making a simple and multiple regression analysis of the factors, among the forest environment factors, that have an effect on richness in bird species, each species was found to be less influenced by an elevation. In addition, this analysis revealed that among the forest environment factors, coverage of tree-1 layer(>12m), tree height, coverage of shrub layer(2${\sim}$0.5m), slope, coverage of subtree-2 layer(4${\sim}$2m) appeared as more influential ones on the variation of abundance in more species than an elevation itself. That explains why it is necessary to continuously maintain and manage the coverage of tree-1 layer(>12m), tree height, coverage of shrub layer(2${\sim}$0.5m), slope, and coverage of subtree-2 layer$(4{\sim}2m)$, etc. for the preservation and management of bird species in a breeding season at Jirisan National Park.

본 연구는 지리산국립공원에서 번식기동안 산림환경에 따른 번식조류들의 풍부도를 조사하여, 번식조류 풍부도에 영향을 미치는 요인들을 밝히고 조류서식지의 효과적 관리를 위한 기초 자료를 얻기 위해 실시하였다. 조사를 위하여 주등산로 4개소를 조사지로 선정하고 2007년 4월부터 8월까지 번식조류 및 산림환경 조사를 실시하였으며 그 결과는 다음과 같다. 지리산국립공원의 고도 300m부터 1900m에서 번식기동안 관찰된 조류는 총 33종이었으며, 전체 조사지점의 30%이상에서 출현한 13종과 종풍부도, 개체수풍부도로 회귀분석을 실시하였다. 단순회귀분석과 다중회귀분석으로 산림환경 인자들 중 조류들의 풍부도에 영향을 미치는 인자들을 분석한 결과 각 종들은 고도의 영향을 적게 받는 것으로 나타났다. 산림환경 인자들 중 교목층 12m이상 엽층피도율, 수구 관목층 엽층피도율, 경사도, 아교목층 4-2m 엽층피도율 등은 고도보다 더 많은 종의 풍부도 변화에 영향력 있는 인자들로 나타났다. 그러므로 지리산국립공원 번식기 조류의 보호 및 관리를 위해 교목층 12m이상 엽층피도율, 수고, 관목층 엽층피도율, 경사도, 아교목층 4-2m 엽층피도율 등의 유지 관리가 필요하다.

Keywords

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