국립수목원 전문전시원에서 발생한식물성 부산물의 퇴비화 가능성 평가
Evaluation of the Composting Potential of Plant By-products from the Exhibition Gardens at the Korea National Arboretum
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This study evaluated the composting potential of forest organic by-products generated during the maintenance of exhibition gardens at the Korea National Arboretum. Four herbaceous species, such as Erigeron annuus, Equisetum arvense, Oenothera biennis, and Artemisia indica, were used as the primary material, and Oak fallen leaves were used as the secondary material in a 3:1 mixing ratio. Composting was carried out over a 90day period, with regular monitoring of temperature and weight, and weekly turning to ensure aeration. The compost temperature reached 45~51℃ in the initial phase, indicating active microbial decomposition, and stabilized to ambient levels after 50 days. The pH ranged from 7.9 to 8.5, suitable for microbial activity. The C/N ratio (21.0~29.3%) fell within the optimal range for composting, and organic matter content (53.1~67.1%) exceeded the regulatory minimum(30%) for compost quality. Electrical conductivity(EC) remained below general compost standards, and no heavy metals (Pb, Cd, As) were detected. These results demonstrate that forest organic by-products can be converted into high- quality compost that meets standards for chemical safety.
Abstract
This study evaluated the composting potential of forest organic by-products generated during the maintenance of exhibition gardens at the Korea National Arboretum. Four herbaceous species, such as Erigeron annuus, Equisetum arvense, Oenothera biennis, and Artemisia indica, were used as the primary material, and Oak fallen leaves were used as the secondary material in a 3:1 mixing ratio. Composting was carried out over a 90day period, with regular monitoring of temperature and weight, and weekly turning to ensure aeration. The compost temperature reached 45~51℃ in the initial phase, indicating active microbial decomposition, and stabilized to ambient levels after 50 days. The pH ranged from 7.9 to 8.5, suitable for microbial activity. The C/N ratio (21.0~29.3%) fell within the optimal range for composting, and organic matter content (53.1~67.1%) exceeded the regulatory minimum(30%) for compost quality. Electrical conductivity(EC) remained below general compost standards, and no heavy metals (Pb, Cd, As) were detected. These results demonstrate that forest organic by-products can be converted into high- quality compost that meets standards for chemical safety.