Abstract
This paper describes the results of soil surveys conducted to determine the carbon sequestration rate, primarily of the soil, which is one of the categories of revegetation related information to be reported under the Kyoto Protocol. First, the background of the surveys is described, and the framework for further study on soil organic carbon sequestration rates is described for urban parks. Then, based on the results of a 125-sample survey from urban parks around Tokyo that were established in different years, the likelihood of whether urban park soils are carbon dioxide sinks is verified. Finally, the carbon accumulation rate 20 years after park establishment was about 1.20 MgC/ha/year.
