북한산국립공원 참나무시들음병 피해지 맵핑 연구 Mapping of the Damaged Forest by Oak Wilt Disease in Bukhansan National Park
pp.704-717
본 연구는 북한산국립공원을 대상으로 참나무시들음병 피해지에 대한 감염단계별 현황을 정밀조사하고 이를 지도화하여 감염피해 관리 및 예방을 위한 기초자료를 제공하고자 하였다. 유역권을 고려한 현존식생 polygon을 맵핑단위로 설정하여 참나무류 분포지역을 조사하였으며 관리지구별 감염피해율 및 감염 단계별 가중치를 적용하여 산정한 감염지수 현황을 맵핑하였다. 북한산국립공원 전체 참나무류 감염피해율은 58.5% 이었고, 경피해율 29.6%, 중피해율 16.1%, 심피해율 8.8%, 고사율 4.1% 등 이었다. 원도봉의 범골능선에서 정릉지구의 형제봉능선까지의 감염정도가 심하였고 북한산국립공원의 주능선을 중심으로 서측의 송추지구, 산성지구, 구기지구는 상대적으로 피해정도가 약하였으나 능선부와 주요 계곡부 상부 일대에서 감염피해율은 높았다. 감염지수는 피해 미약 지역이 전체 참나무류 면적의 39.1%, 가벼운 피해 지역이 41.0%, 중간 피해 지역이 전체 면적의 16.1%, 심각한 피해 지역이 전체 면적의 3.3%, 대부분 고사 위험 피해 지역이 전체 면적의 0.4%이었다. 심피해와 고사목이 다수 확인된 도봉지구의 무수골계곡과 자운봉 일대의 감염지수가 높았으며 정릉지구의 보현봉 일대와 산성지구의 효자리계곡 일부지역에서도 감염정도가 심각하였다. 북한산국립공원의 각 지구별 참나무류 분포면적 대비 예측 감염주수 산정 결과, 전체 참나무류 주수 2,709,147주 중 감염주수는 총 1,585,937주 이었다. 우이지구가 참나무류 352,931주 중 306,161주가 감염되어 피해가 가장 심하였고 피해가 가장 적은 구기지구는 참나무류 145,747주 중 53,141주가 감염되었다.
This study aims to provide basic data for management and prevention of infection damage by Oak wilt disease through mapping method of status with infected level in damaged area of Bukhansan National Park. Survey was carried out in the distributed area of oak trees with mapping unit of polygon of actual vegetation and mapped of infection ratio and infection index applying weight according to infected level. Infection ratio of oak trees in Bukhansan National Park was 58.5%, and lightly damaged ratio was 29.6%, half of the damaged ratio was 16.1%, seriously damaged ratio was 8.8% and withered ratio was 4.1%. It was serious to be infected from Beomgol ridge in Wondobong district to Hyeongjaebong in Jeongrung district. Although the infected ratio of the western part of Songchu district, Sanseong district and Gugi district centering main ridge of Bukhansan National Park was low, it of ridge and main valley was high. Infection index of hardly damaged area was 39.1% of whole area, and slightly damaged area was 41.0%, half of the damaged area was 16.1%, seriously damaged area was 3.3% and alarmed withering area was 0.4%. Infection index was high around Musugol valley in Dobong district and Jaunbong, and it of Bohyunbong of Jeongrung district and the part of Hyojari valley of Sanseong district was serious. Predicted numbers of the trees affected Oak wilt disease compared to the distributed area of oak trees was 1,585,937 trees among 2,709,147 trees of Quercus spp. 352,931 trees among the 306,161 trees of oak were infected in Woi district, the most seriously infected area and 53,141 trees among the 145,747 trees of oak was infected in Gugi district, the most slightly infected area.