Calculation and Optimization of Campus Green Space Carbon Sink Benefits Under the"Double Carbon"Goal
Urban green space is an important foundation for improving the carbon sink benefits of urban ecosys-tems.Using I-tree model,the paper explores individual plants and community types with high carbon sink benefits and analyzes their influencing factors with 20 typical plant communities in Chengdu universities.The results showed that:①one of the four types of trees had the highest carbon sink benefit.The highest carbon sequestration was Camphora officinarum,and the highest carbon storage was Ficus virens Aiton;②the results of cluster analy-sis showed that among the trees,Camphora officinarum,Ficus virens Aiton,Caryota obtusa Griff.,Cedrus deodara,Cryptomeria japonica,Cycas revoluta,Gleditsia sinensis and Juniperus chinensis,and among the shrubs,Hibiscus mutabilis,Distylium racemosum,Camellia japonica and Melaleuca bracteata are the landscaping plants with high carbon sink benefits,which can be prioritized for use in campus greening;③Diameter at Breast Height(DBC),Plant Height(PSH),Crown Width(CW)and(LAI)have a significant positive effect on the carbon sink benefits of plants,and DBC has the greatest influence;④radial structure had a signifiicant positive effect on the carbon sink benefits of the communities,and there was no significant correlation between planting density and the carbon sink benefits of the communities.
urban green spaceplant communitiescarbon sink benefitsplanting design
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