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NTIS 바로가기한국농림기상학회지 = Korean Journal of Agricultural and Forest Meteorology, v.21 no.1, 2019년, pp.1 - 28
안웅산 (제주특별자치도 세계유산본부) , 김대신 (제주특별자치도 세계유산본부) , 윤영석 (제주특별자치도 세계유산본부) , 고석형 (제주특별자치도 세계유산본부) , 김권수 (제주특별자치도 세계유산본부) , 조인숙 (제주특별자치도 세계유산본부)
This study analyzed the density and mortality rate of Korean fir at 9 sites where individuals of Korean firs were marked into the live and dead trees with coordinates on orthorectified aerial images by digital photogrammetric system. As a result of the analysis, Korean fir in each site showed consid...
핵심어 | 질문 | 논문에서 추출한 답변 |
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구상나무 쇠퇴원인으로 무엇이 제시 되었는가? | 특히 한라산은 세계 유일의 구상나무 순림 분포지로, 일찍이 1980년대부터 구상나무 쇠퇴의 원인을 밝히기 위한 다양한 연구들이 진행되어 왔다. 구상나무 쇠퇴원인으로는 태풍과 봄 가뭄(Kang, 1984; Kim, 1994; Park and Seo, 1999), 각 개체에 대한 미기후 요인(Lee and Cho, 1993), 건조한 동절기 기후로 인한 수분스트레스 증가(Lim et al., 2006) 혹은 그로 인한 수분수지 불균형(Koo et al., 2001), 강풍에 따른 뿌리 흔들림, 집중강수에 의한 토양유실, 겨울철 폭설 등의 복합적 작용(Koh et al., 2015; Song et al., 2016) 등 다양한 요인들이 제시되어 왔다. 기존 연구들은 공통적으로 기후변화가 구상나무 쇠퇴의 주요원인으로 분석하고 있지만, 기후변화에 의해 어떠한 요인이 구상나무의 생장 혹은 생존에 영향을 주는가에 대한 구체적인 설명은 결여되어 있다. | |
구상나무는 어디에 위치하는가? | 구상나무는 한라산, 지리산, 덕유산, 가야산 등 한반도 남부지역의 해발 1,000m 이상의 고지대에 분포하고 있으나, 그 분포면적이 지속적으로 감소하고 있는 실정이다. 특히 한라산은 세계 유일의 구상나무 순림 분포지로, 일찍이 1980년대부터 구상나무 쇠퇴의 원인을 밝히기 위한 다양한 연구들이 진행되어 왔다. | |
구상나무의 고사현상에 영향을 주는 요인은 무엇인가? | 본 연구에서는 구상나무 밀도 및 고사율을 토대로 고도, 지형경사, 수계망, 일사량과 경사향 등의 지형적 요인과 구상나무 고사현상과의 관련성을 살펴보았다. 구상나무는 고도가 증가함에 따라 밀도가 증가하였으며, 고사율 또한 증가하였다. 지형경사와 고사율 사이에는 음의 상관관계가 인지되었으며, 수계망이 미약하게 발달한 완만한 곳에서 고사율이 높게 나타났다. 그리고 경사향에 따라 고사율이 크게 변화하는 것이 인지되었으며, 생목이 우세한 영역이 사목이 우세한 영역에 비해 평균 일사량이 많게 나타났다. 전반적으로 한라산 구상나무는 상대적으로 지형경사가 완만하고, 일사량이 적은 곳에서 많이 고사하는 것으로 나타났다. 지형경사가 완만할수록 상대적으로 토양수분 함량이 많고, 일사량이 적을수록 증발량이 적어져 토양수분 함량이 많다는 기존 연구결과를 고려하면, 토양수분 과다가 한라산 구상나무 고사의 원인으로 추정된다. |
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