The purpose of this study is to examine the direction of park design and management on the basis of a quantitative evaluation of the carbon cycle in an urban park, in order to develop a low-carbon-emission and recycling urban park focusing "Green Recycling". Actually, we collected data related to the flow and amount of carbon in an urban park, in order to construct a carbon cycle model by system dynamics. The results are as follows: 1) In the study park under present conditions, the carbon recycling rate was 100%. 2) It is possible to predict the change in the amount of carbon in the study park using the constructed carbon cycle model. 3) The annual amounts of carbon in 30 years are 18,826 [kg-C/year] (recycling rate=0%), 22,364 [kg-C/year] (recycling rate=50%), and 25,903 [kg-C/year] (recycling rate=100%). 4) "Green Recycling" is useful for developing a low-carbon-emission urban park. 5) It is important to consider the park design and management balance of both recycling rate and processing capacity. 6) It is important to discuss landscape planning that considers low-carbon-emission and recycling, including the role of the community.