Afforestation is encouraged as aggressive steps for continuous climate change and greenhouse gas reduction. Moreover, urban green space is especially treated as an independent field of settlements in IPCC Good Practice Guidance (GPG) and Guidelines (GL), highlighting its gravity and necessity. Such ...
Afforestation is encouraged as aggressive steps for continuous climate change and greenhouse gas reduction. Moreover, urban green space is especially treated as an independent field of settlements in IPCC Good Practice Guidance (GPG) and Guidelines (GL), highlighting its gravity and necessity. Such growing interest in urban green space has activated domestic and foreign studies involved. However, the lack of activity data for reporting on national greenhouse gas inventory, as well as the unbalanced quantity of carbon storage and uptake studies leaning towards trees result in insufficient researches on urban soil. Therefore, in order to measure the soil carbon storage by urban green spaces in this study, it was analyzed the related section in IPCC GPG and GL and conducted surveys on the urban green spaces that are considered as settlements in IPCC GPG and GL, classifying those spaces as four criteria - the roadside, park, school, and the riverside and as three regions - Seoul, Daejeon, Daegu metropolis. Soil samples were taken from four-typed category in each city, from 2009 to 2011, and quantified on the soil carbon storage, depending on the soil depth 0-10cm, 10-20cm, 20-30cm and on planting tree species on roadside and the park. Soil carbon storage per unit area (tonC/ha) can be determined as 21.84 in Seoul, 9.52 in Daejeon, and 12.80 in Daegu, respectively for roadside green space; 17.12 in Seoul, 8.26 in Daejeon, and 18.65 in Daegu, respectively for park green space; 13.31 in Seoul, 8.90 in Deajeon, and 10.69 in Deagu, respectively for school green space; 23.82 in Seoul, 12.88 in Daejeon, and 26.31 in Daegu, respectively for riverside green space. Considering the soil depth, the deeper beneath the surface soil, the less the carbon storage capacity. Also, samples on roadside with species of plants reflect high ability to store soil carbon, with 31.76 ton/ha in Prunus serrulata var. spontanea for Seoul, 17.65 ton/ha in Zelkova serrata planting sites for Daejeon, 17.44 ton/ha in Acer buergerianum planting sites for Deagu, respectively. Furthermore, total of soil carbon storage (tonC) reflecting the urban green spaces in each criterion was estimated as 8,870 for roadside green space, 48,731 for park green space, 1,307 for school green space, and 14,733 for riverside, respectively in Seoul; as 961 for roadside green space, 9,532 for park green space, 316 for school green space, and 699 for riverside green space, respectively in Daejeon; as 1,664 for roadside green space, 17,139 for park green space, 913 for school green space, and 402 for riverside green space, respectively in Daegu. On the other hand, this study proposes the enhancement of carbon storage capacity which is subdivided as soil compaction, soil organic matters, and soil nutrients in urban green space. This research could be meaningful not only as the complement to relatively minor domestic urban green space studies compared to forest researches, but also as the report displaying the estimation of soil carbon storage by regions, types of green space and drawing a comparison between them and existing soil researches.
Afforestation is encouraged as aggressive steps for continuous climate change and greenhouse gas reduction. Moreover, urban green space is especially treated as an independent field of settlements in IPCC Good Practice Guidance (GPG) and Guidelines (GL), highlighting its gravity and necessity. Such growing interest in urban green space has activated domestic and foreign studies involved. However, the lack of activity data for reporting on national greenhouse gas inventory, as well as the unbalanced quantity of carbon storage and uptake studies leaning towards trees result in insufficient researches on urban soil. Therefore, in order to measure the soil carbon storage by urban green spaces in this study, it was analyzed the related section in IPCC GPG and GL and conducted surveys on the urban green spaces that are considered as settlements in IPCC GPG and GL, classifying those spaces as four criteria - the roadside, park, school, and the riverside and as three regions - Seoul, Daejeon, Daegu metropolis. Soil samples were taken from four-typed category in each city, from 2009 to 2011, and quantified on the soil carbon storage, depending on the soil depth 0-10cm, 10-20cm, 20-30cm and on planting tree species on roadside and the park. Soil carbon storage per unit area (tonC/ha) can be determined as 21.84 in Seoul, 9.52 in Daejeon, and 12.80 in Daegu, respectively for roadside green space; 17.12 in Seoul, 8.26 in Daejeon, and 18.65 in Daegu, respectively for park green space; 13.31 in Seoul, 8.90 in Deajeon, and 10.69 in Deagu, respectively for school green space; 23.82 in Seoul, 12.88 in Daejeon, and 26.31 in Daegu, respectively for riverside green space. Considering the soil depth, the deeper beneath the surface soil, the less the carbon storage capacity. Also, samples on roadside with species of plants reflect high ability to store soil carbon, with 31.76 ton/ha in Prunus serrulata var. spontanea for Seoul, 17.65 ton/ha in Zelkova serrata planting sites for Daejeon, 17.44 ton/ha in Acer buergerianum planting sites for Deagu, respectively. Furthermore, total of soil carbon storage (tonC) reflecting the urban green spaces in each criterion was estimated as 8,870 for roadside green space, 48,731 for park green space, 1,307 for school green space, and 14,733 for riverside, respectively in Seoul; as 961 for roadside green space, 9,532 for park green space, 316 for school green space, and 699 for riverside green space, respectively in Daejeon; as 1,664 for roadside green space, 17,139 for park green space, 913 for school green space, and 402 for riverside green space, respectively in Daegu. On the other hand, this study proposes the enhancement of carbon storage capacity which is subdivided as soil compaction, soil organic matters, and soil nutrients in urban green space. This research could be meaningful not only as the complement to relatively minor domestic urban green space studies compared to forest researches, but also as the report displaying the estimation of soil carbon storage by regions, types of green space and drawing a comparison between them and existing soil researches.
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