earticle

영어

Landscape planting design for carbon sequestration requires proper species selection and planting techniques. However, conventional planting design is characterized by extensive grass area, single-layered planting, low tree density, and poor species composition. This study explored desirable strategies of planting design including better species to maximize carbon uptake by landscape trees. The amount of carbon uptake was variable with different landscape tree species. The tree species which grow well even under adverse urban environments showed greater effects of carbon uptake. Carbon uptake by open-grown trees was higher than that by forest-grown trees due to less crown competition and greater leaf area for the same species. Ecological planting technique with multilayered and multiaged structures showed highest carbon uptake per unit area, compared to the other planting techniques. Grass area was not a carbon sink but a carbon source. It is desirable to restrict extensive grass area, which is available growing space of trees. This study explored planting design strategies for different growth environments of gardens, parks, and streets. Study results are expected to be useful for planting projects to create low-carbon landscapes.