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공공 및 민간 부문 공동주택 식재공사 탄소(CO2) 배출량 분석 - 건설공사 표준품셈의 조경공사 시공량을 기준으로 -

Analysis of Carbon Emissions from Planting Construction for Public and Private Sector Apartment - Based on the Construction Volume of Landscaping Works on Standard Unit Productivity Data on Construction Projects -

오창송|박상욱
(사)한국정원디자인학회 (Korea Institute of Garden Design)|2024.06|한국정원디자인학회지 (Journal of the Korea Institute of Garden Design)|제10권 제2호|pp. 101-110|DOI 10.22849/jkigd.2024.10.2.001

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키워드

건설기계배출계수Construction MachineryGreen Area녹지면적식재설계Planting Design2006 IPCCEmission Facto
주제분류조경학

초록

건설산업에서 이산화탄소 배출량은 매년 증가하는 추세이고, 선행연구들도 조경시공 단계에서 이산화탄소 배출량이 높은 것으로 보고하였다. 이 때문에 조경공간 탄소발자국 관점에서 녹지와 식물에 의한 이산화탄소 감축 효과는 불확실할 수밖에 없다. 이에 본 연구는 공동주택 식재공사 중 이산화탄소 배출에 대한 예측가능한 자료를 구축하는 것을 목적으로 한다. 이 목적을 수행하기 위해 본 연구는 공공과 민간부분 아파트에서 건설한 20개의 식재공사 자료를 기반으로 2006 IPCC에서 제시한 Tier 2 방법에 의한 이산화탄소 배출량을 산정하였다. 이 결과를 토대로 공공과 민간부분을 비교․분석하였고 녹지면적과 식재규격별로도 분석하였다. 그 결과 공공부문이 민간부문보다 더 많은 수목을 식재하였지만, 녹지면적 100m2 당 식재 공사에서 민간부문의 이산화탄소 배출량이 1.09tCO2로 공공부문(1.02tCO2)보다 많이 배출하였다. 그 이유는 민간부문이 공공부문보다 근원직경 30cm 이상 수목을 더 많이 식재하였기 때문이었다. 실제 이 규격 이상의 수목은 전체 물량의 2.0∼6.9% 차지하지만, 이산화탄소 배출량은 11.3∼28.8% 차지하였다. 또한, 선형회귀분석 결과 녹지면적의 증가는 시공 중 이산화탄소 배출과 정비례하기 때문에 생애주기 관점에서 이산화탄소 저감을 위한 계획은 그 흡수량과의 상관관계를 통해 적정한 녹지면적을 산출하는 것이 요구된다. 위 결과를 토대로 식재 공사 중 이산화탄소 배출을 감축하기 위한 제언으로 설계단계에서 수목 규격을 결정하기 위해 탄소 저감을 고려할 필요가 있을 것이고 법적으로 수목식재에 관한 인정 규격을 개선할 필요가 있다. 다만 본 연구는 수목 재배지로부터 이동거리에 따른 이산화탄소 배출량을 반영하지 못해 일반화하는데 한계가 있다.

Abstract

The amount of CO2 emissions in the construction industry is increasing every year, and previous studies have reported that CO2 emissions are high in the landscape construction stage. For this reason, the effect of reducing CO2 by greenery and plants in terms of carbon footprint of landscape space is uncertain. Therefore, the purpose of this study is to establish predictable data on CO2 emissions during planting in apartment. To accomplish this purpose, this study calculated CO2 emissions using the Tier 2 method proposed by the 2006 IPCC based on data from 20 planting projects constructed in public and private apartments. Based on these results, the public and private sectors were comparatively analyzed, and the green area and planting standards were also analyzed. As a result, although the public sector planted more trees than the private sector, the private sector’s CO2 emissions were 1.09 tCO2 per 100m2 of green area, which is higher than that of the public sector (1.02 tCO2). The reason for this was that the private sector planted more trees with a root diameter of more than 30cm than the public sector. In fact, trees above this standard accounted for 2.0∼6.9% of the total volume, but CO2 emissions accounted for 11.3∼28.8%. In addition, as a result of linear regression analysis, the increase in green area is directly proportional to CO2 emissions during construction, so it is necessary to calculate an appropriate green area through correlation with the amount of CO2 absorption from a life cycle perspective. Based on the above results, it is necessary to consider carbon reduction in order to determine the tree standard at the design stage as a suggestion to reduce CO2 emissions during planting work, and it is necessary to improve the legally recognized standards for tree planting. However, this study has limitations in generalizing it because it does not reflect carbon dioxide emissions according to the travel distance from the tree plantation.

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