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NTIS 바로가기한국환경생태학회지 = Korean journal of environment and ecology, v.34 no.1, 2020년, pp.42 - 54
박홍철 (국립공원연구원) , 문건수 (삼아항업주식회사) , 이호 (국립공원연구원) , 이나연 (국립공원연구원)
This study aimed to analyze the rate of increase and spread patterns of dead trees of the conifer (Abies koreana and others) in subalpine zones by using the high-resolution aerial images in Jirisan National Park around 10 years ago. Furthermore, factors affecting the death of conifer were identified...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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지리산국립공원에서 구상나무가 높은 밀도로 서식하고 있는 곳은 어디인가? | 구상나무는 동-서로 가로지르는 주능선을 중심으로 거의 모든 능선부에 다양한 밀도로 분포하고 있다(KNPRI, 2017). 특히 반야봉과 영신봉, 천왕봉일대에서 높은 밀도로 서식하고 있으며(KNPRI, 2017; Parket al., 2019), 고사현상도 두드러지게 나타나고 있다(KNPRI, 2017; 2018; 2019). | |
3차원 입체항공영상판독시스템은 무엇인가? | 항공영상 판독의 정확도를 제고하기 위해 디지털 방식의 3차원 입체항공영상판독시스템을 사용하였다. 해당 시스템은 중첩 촬영된 항공영상을 이용하여 사진 상의 지상 좌표 값 정보를 읽어 점, 선, 면의 형태인 수치지도로 지형지물을 묘사(도화)하는 시스템으로, 삼아항업(주)에서 개발한 ‘DPSMaster’를 사용하였다. ‘DPSMaster’는 입체(3D)로 구현된 고해상도 항공영상을 바탕으로 수목의 침·활엽수 구분, 고사유무 육안 판별이 가능하며, 불규칙하고 복잡한 지형을 나타내는 산림지역에 대한 신속하고 정확한 판독이 가능하도록 지원해주는 영상판독프로그램이다(Figure 2). | |
직접조사를 통한 고사실태 파악의 단점은 무엇인가? | 직접조사를 통한 고사실태 파악은 사람이 직접 현장에서 관찰·조사·측정하는 방식이므로 대규모 면적 조사에 한계가 있으며, 특히 아고산대처럼 고해발고도 지역은 사람의 접근이 물리적으로 어려운 경우가 많다. 따라서 접근 가능한 지역에 한해 대표성을 나타내는 특정 군락을 선정하여 방형구법에 의한 표준지 조사를 수행하는 것이 일반적인데, 표준지의 규모와 개수가 충분하지 않을 경우 조사결과를 공간적으로 확대하여 일반화하기 어렵다는 한계가 있다. |
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