Taking the northern section of the Xueyuan River in Xuchang City as research objects,this paper investigated the species composition and growth characteristics,and evaluated the ecological benefits of trees such as air purification,carbon sequestration,oxygen release and rainwater retention using the i-Tree Eco model.Further,the ecological benefits of ground cover and hydrophyte were also evaluated.The results showed as follows,(1)in the study area,there were 70 garden plant species including 36 tree species and 8 951 individuals,which were dominnanted by ash,ginkgo,metasequoia.(2)The annual total ecological benefit of trees was 976 200 yuan,with carbon storage(564 400 yuan)and oxygen production(183 600 yuan)as the main source,and the average ecological benefits of poplar,maple poplar,mantou willow,and neem were in the front rank.(3)The ecological benefits of carbon fixation,oxygen production and dust retention by ground cover plants totaled 1 119 700 yuan,and the ecological benefits of wetland climate regulation,carbon fixation and water purification for hydrophyte totaled 78 900 yuan.It is expected that this study will provide reference for planting design and optimization of urban waterfront landscape.
关键词
生态效益/滨河景观/许昌/i-Tree/Eco模型
Key words
ecological benefit/riverfront landscape/Xuchang City/i-Tree Eco model
万方数据