热带农业工程2025，Vol.49Issue(1)：9-16,8.
兰州市20种园林植物固碳释氧能力研究
Study on Carbon Fixation and Oxygen Release Capacity of 20 Garden Plants in Lanzhou City
摘要
Abstract
To investigate the carbon fixation and oxygen release capacity of typical plants in northwest China,twenty common landscape plants(five for each varieties of evergreen trees,deciduous trees,deciduous small trees and deciduous shrubs)in Jincheng Park of Lanzhou City,Gansu Province,were selected as research subjects.Using the Top-1300 Canopy Analyzer and the 3051D Portable Photosynthesis System,the leaf area index and photosynthetic physiological indicators of trees and shrubs were measured.The carbon fixation and oxygen release amounts the 20 landscape plants species were calculated at different scales,and their carbon fixation and oxygen fixation functions were analyzed.The results showed that the leaf area index of the 20 trees and shrubs species ranged from 1.42-4.96.The daily net photosynthetic rate,daily daily carbon fixation and oxygen release capacity per unit leaf area,and daily carbon fixation and oxygen release capacity per unit canopy projection area were highest for weeping willow,followed by ginkgo and paulownia tomentosa.Cluster analysis of carbon fixation and oxygen release capacity revealed that,on the scale of unit leaf area,evergreen trees were classified into three grades,while deciduous trees and small deciduous trees were each divided into three levels,and deciduous shrubs were divided into two levels.On the scale of unit canopy projection area,all four categories-evergreen trees,deciduous trees,small deciduous trees,and deciduous shrubs-were classified into three levels.Therefore,in the selection of plant species for urban greening in the northwest China,priority should given to species with strong carbon fixation and oxygen release capacity,mainly the deciduous tree weeping willow and evergreen tree cedar,supplemented by the small deciduous tree red-leafed peach and the deciduous shrub forsythia.关键词
园林植物/光合速率/固碳释氧/兰州市金城公园Key words
garden plants/Photosynthetic rate/Carbon fixation and oxygen release/Jincheng Park of Lanzhou City分类
农业科技引用本文复制引用
岳嘉瑞,刘文兰,卿平勇..兰州市20种园林植物固碳释氧能力研究[J].热带农业工程,2025,49(1):9-16,8.基金项目
甘肃农业大学科技创新基金—学科建设专项基金(No.GAU-XKJS-2018-114),甘肃省高等学校创新能力提升项目(No.2019B-072),甘肃省林业和草原局林草科技创新与合作项目(No.kjcx2021004),国家自然科学基金项目(No.31360569). （No.GAU-XKJS-2018-114）
