“双碳”目标下校园绿地碳汇效益测算及优化提升  

Calculation and Optimization of Campus Green Space Carbon Sink Benefits Under the"Double Carbon"Goal

作　　者：袁艺嘉 陈睿智[1] Yuan Yijia;Chen Ruizhi(School of Architecture,Southwest Jiaotong University,Chengdu 611756,Sichuan,China)

机构地区：[1]西南交通大学建筑学院,四川成都611756

出　　处：《绿色科技》2024年第20期47-53,共7页Journal of Green Science and Technology

摘　　要：城市绿地是提升城市生态系统碳汇绩效的重要基础。运用I-tree模型,以成都高校20个典型植物群落为研究对象,探究高碳汇效益的植物个体和群落类型,并分析其影响因素。结果表明:①一类乔木碳汇效益最高,整体上固碳量最高的是香樟,碳储量最高的是黄葛树。②聚类分析结果显示,乔木中香樟、黄葛、董棕、雪松、日本柳杉、苏铁、皂角、圆柏;灌木中木芙蓉、蚊母树、山茶和千层金碳汇效益较高,在校园绿化中可优先选用。③胸径、株高、冠幅和叶面积指数对植物碳汇效益具有显著正向影响,且胸径影响程度最大。④径级结构对群落碳汇效益具有显著正向影响,种植密度与群落碳汇效益没有明显相关性。Urban green space is an important foundation for improving the carbon sink benefits of urban ecosystems.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 analysis 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 significant 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.

关 键 词：城市绿地 植物群落 碳汇效益 种植设计 

分 类 号：TU985[建筑科学—城市规划与设计]