정주지 주요 관목의 탄소저장량 분석을 위한 상대생장식 개발 - 세종시 개나리, 수수꽃다리를 중심으로 -
Development of Allometric Equations for Carbon Storage Analysis of Shrubs in Settlement – Forsythia koreana and Syringa oblata var. dilatata in Sejong-si –
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초록
이 연구는 정주지에서 흔히 식재되는 개나리와 수수꽃다리를 대상으로 상대생장식을 개발하고, 이에 적합한 변수를 제시하기 위한 목적으로 수행되었다. 개나리와 수수꽃다리는 대한민국 전역의 정주지에 식재되며, 조경이나 옥상녹화 등에 활용되는 수종이다. 상대생장식은 주로 수목의 직경, 수고, 수관면적 등의 생육 특성에기반해 탄소저장량을 추정하는 식이다. 개나리와 수수꽃다리는 직경, 수고, 수관폭 등 다양한 변수를 측정하고, 식물체를 부위별(잎, 가지, 줄기, 뿌리)로 구분하여 건중량을 측정하였다. 측정값과 탄소함량비를 활용하여 탄소저장량을 산정하고 각 변수의 중요도와 상관성을 평가하여 적합한 변수로 근원직경을 채택하였다. 수고와 수관폭도 일부 지표에서 유의미한 상관성을 확인하였다. 상대생장식 개발결과, DW=axb 형태의 모델에서 가장 높은 설명력을 확인하였다. 이러한 연구결과는 정주지에서의 탄소저장량을 정량화하고, 국가 탄소중립 정책에 기여할 기초자료로 활용될 것이다.
Abstract
This study was conducted to develop an allometric equation for Forsythia koreana and Syringa oblata var. dilatata, commonly planted in settlements, and to identify suitable variables for this model. F. koreana and S. oblata var. dilatata are widely planted across Korea and are used in landscaping and rooftop greening. The allometric equation is primarily based on growth characteristics such as tree diameter, height, and canopy area to estimate carbon storage. For F. koreana and S. oblata var. dilatata variables like diameter, height, and canopy width were measured. The plants were divided into sections (leaves, branches, stems, and roots) for biomass measurement. Using these measurements and carbon content ratios, carbon storage was calculated, and the importance and correlations of each variable were evaluated, with Root collar diameter identified as the primary variable. Height and canopy width also showed significant correlations in some indicators. The developed allometric equation achieved the highest explanatory DW=axb of the power form based allometric model. These findings can serve as foundational data for quantifying carbon storage in settlements and supporting national carbon neutrality policies.
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