서울시 가로수의 재적식 개발 및 탄소저장량 평가
Developing volume equation of street tree and its carbon stock for urban forest in Seoul
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초록
본 연구의 목적은 서울시 도시녹지 중 가로수의 재적식을 개발하고 탄소저장량을 추정하는데 있다. 서울시 가로수의 79%를 차지하는 은행나무, 메타세콰이어, 느티나무, 양버즘나무를 대상으로 흉고직경을 이용하여 4개의 상대생장식을 비교하였다. 최적의 상대생장식을 개발하기 위하여 이용된 통계량은결정계수, 잔차 평균, 절대평균 잔차제곱이다. 이를 통하여 추정된 수종별 상대생장식은 양버즘나무에서 , 은행나무, 메타세콰이어, 느티나무에서 식이고 결정계수는 0.873이상의 수치를 나타내어 가로수 탄소저장량 추정에 사용이 적합한 것으로 판단된다. 본 연구에서 개발된 재적식을 이용하여추정된 서울시 가로수의 주요 4종에 저장된 탄소량은 약 33,760tC이다. 본 연구의 결과로 제시된 서울시 가로수의 재적식과 탄소저장량은 가로수의 수종별 생장 및 재적정보를 제시하고 도시녹지의 탄소저장량 평가에 활용이 가능할 것으로 판단된다.
Abstract
The objective of this paper is to develop volume equation of street tree and its carbon stockfor urban forest in Seoul. To develop the volume equation by major species in Seoul, data forstreet trees were obtained from four-species (e.g. Gingko biloba, Platanus occidentalis, Zelkovaserrata, and Metasequoia glyptostroboides), which accounted for 79% all street trees in Seoul. This study used a variable based on diameter on breast height and four equation for calculatingvolume. The coefficient of determination, bias, and root mean square error were used toevaluate the precision of four equations. From these methods, the most suitable equations forPlatanus occidentalis was , the other was ; coefficient of determination upper on0.873. From the volume equation developed in this research, the estimated carbon stock werederived as about 33,760tC for four-species of urban forest in Seoul. The results of this paperoffered volume equation and carbon stock that present growth information for street trees inurban forestry and these can be made available for evaluating the management for carbon insettlement.
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