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NTIS 바로가기한국지리정보학회지 = Journal of the Korean Association of Geographic Information Studies, v.21 no.3, 2018년, pp.1 - 18
송봉근 (국립재난안전연구원 재난원인조사실) , 박경훈 (창원대학교 환경공학과)
The purpose of this study is to analyze sensitivity of forest ecosystem to climate change using spatial analysis methods focused on 6 national parks. To analyze, we constructed MODIS NDVI and temperature of Korea Meteorologic Administration based on 1km spatial resolution and 16 days. And we conduct...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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NDVI 자료의 특징은 무엇인가? | , 2012). 그 중 NDVI자료는 식생에 대한 근적외선과 가시광선 영역의 복사 및 반사율에 기초한 것으로 식생의 활력도를 나타내는 지표로서 생태계의 현황 및 특성을 파악하는데 활용된다(Fan et al., 2012). | |
공간분석기법을 활용했을 때의 장점은 무엇인가? | 현재 이러한 산림생태계 문제를 개선하기 위해 많은 연구들이 진행되고 있다. 그 중 위성영상 및 GIS 등 공간분석기법을 활용한 연구는 넓은 지역을 대상으로 지속적인 모니터링이 가능하여 생태계의 시공간적인 변화를 효율적으로 분석할 수 있다(Wakelin et al., 2015; Sapta et al. | |
시계열 분석 기법인 STL 알고리즘은 무엇인가? | 이후 시계열 분석 기법의 일종인 STL(Seasonal-trend decomposition procedure based on losses) 알고리즘을 활용하여 각 픽셀별 시계열 변화를 분석하였다. STL 알고리즘은 원자료(raw data)를 추세자료(trenddata)과 계절자료(seasonal data), 그리고 잔차자료(remainder data)으로 분해하는 것으로(그림 6) 식(1)과 같이 표현된다(Cleveland et al., 1990). |
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Safaei, M., M. Tarkesh, H. Bashari and M. Bassiri. 2018. Modeling potential habitat of Astragalus verus Olivier for conservation decisions: A comparison of three correlative models. Flora 242:61-69.
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