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| 항공사진에 의한 임분구조 추정 Studies on the Estimation of Stand Structure by Aerial Photographs |
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| 글쓴이 : 관리자
날짜 : 08-05-16 12:57
조회 : 9913
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항공사진에 의한 잣나무 임분구조의 추정에 관한 연구 Studies on the Estimation of Korean Pine Stand Structure by Aerial Photographs <한국임학회지 84(4):437-446 Jour. Kor. For. Soc. 84(4):437-446 1995> Contact author dscha@kangwon.ac.kr
강원대학교 임과대학 부속 연습림의 잣나무림(I~V영급)을 대상으로 현지조사 자료와 항공사진 특정자료와의 관계를 이용하여 영급별 흉고직경의 변동계수, Weibull분포에 의한 ha당 본수 및 재적 등의 임분구조를 추정하였으며, 결과는 다음과 같다. 1) 사진측정 수관직경으로부터 흉고직경을 구하고 이를 횡단면 평균목 직경으로 변환하여 산출한 영급별 평균 흉고직경의 변동계수는 I영급 28.88%, II영급 24.13%, III영급 23.29%, IV영급 20.17% 및 V영급 18.79%이며, 2) Weibull분포에 의한 영급별 ha당 본수는 I영급 2,875본, II영급 2,100qhs, III영급 1,875본, IV영급 800본 및 V영급 325본으로 3) 영급별 ha당 재적은 I영급 22.9㎥/ha, II영급 66.8㎥/ha, III영급 101.3㎥/ha, IV영급 209.6㎥/ha 및 V영급 266.8㎥/ha으로 추정되었다. 4) 따라서 임분구조 추정에 효과적으로 항공사진이 이용될 수 있을 것으로 판단된다.
This study was carried out to estimate the Korean Pine stand structure such as coefficient of variation of mean DRH, number of trees and volume per ha by Weibull distribution for each age class from I to V, based on photo measurement and timber cruising in Kangwon National University Experimental Forests. The results were summarized as follows:
1) Coefficient of variation of mean DBH for each age class from I to V, which was obtained by converting DBH estimated from crown diameter by photo measurement into quadratic mean DBH, was estimated as 28.88%, 24.13%, 23.29%, 20.27%, and 18.79%, respectively. 2) Number of trees per ha of each age class by Weibull distribution was obtained as 2875, 2100, 1875, 800, and 325, respectively. 3) Volume per ha of each age class was estimated as 22.9㎥/ha, 66.8㎥/ha, 101.3㎥/ha, 209.6㎥/ha, and 266.8㎥/ha, respectively. 4) Therefore, aerial photographs will be helpful to estimate the stand structure effectively.
Key words: aerial photograph, Korean pine stand, stand structure, Weibull distribution
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