福建林业科技2025，Vol.52Issue(3)：74-85,12.DOI:10.13428/j.cnki.fjlk.2025.03.010
江苏省20种城市绿化树种光合特性及固碳增湿效益
Study on the Photosynthetic Characteristics and Carbon Sequestration as well as Humidification Benefits of 20 Urban Greening Tree Species in Jiangsu Province
摘要
Abstract
In order to study the carbon sequestration and oxygen release capacity,as well as the cooling and humidifying effect capac-ity of 20 typical urban greening tree species in Jiangsu Province,China,a portable photosynthesis meter was used to measure the key photosynthetic physiological indices such as the net photosynthetic rate and transpiration rate of each tree species in 2024.Based on the measured data,the ecological function parameters such as the amount of carbon sequestration and oxygen release,the amount of cooling and humidifying,and the water use efficiency were calculated.The results showed that the diurnal dynamic change patterns of photosynthesis and transpiration of the 20 urban greening tree species could be divided into two types:unimodal curve and bimodal curve.In terms of the amount of carbon fixation and oxygen release per unit leaf area and per unit land area,among the arbors,Lirio-dendron × sinoamericanum had the highest value;among the small arbors,Prunus persica'Duplex'had the highest value;among the shrubs,Gardenia jasminoides var.radicans and Fatshedera lizei had the highest values.In terms of the amount of temperature reduc-tion and humidity increase per unit leaf area and per unit land area,among the arbors,Zelkova serrata and Liriodendron × sinoameri-canum had the highest values;among the small arbors,Prun us persica'Duplex'had the highest value;among the shrubs,Gardenia jasminoides var.radicans and Hypericum monogynum had the highest values.Overall,among the arbors,Zelkova serrata and Lirioden-dron × sinoamericanum;among the small arbors,Prunus persica'Duplex'and Prunus serrulata var.lannesiana;and among the shrubs,Gardenia jasminoides var.radicans,Ligustrum × vicaryi,Pittosporum tobira,and Fatshedera lizei:these seven tree species have relatively strong comprehensive functions in terms of carbon fixation and oxygen release capacity,alleviating the urban heat island effect,and water use efficiency.关键词
绿化树种/光合特性/固碳释氧/降温增湿/水分利用效率Key words
greening tree species/photosynthetic characteristics/carbon fixation and oxygen release/cooling and humidifying/water use efficiency分类
农业科技引用本文复制引用
刘瀚舒,侯靖雨,丁佳文,杨丞浠,刘志勇,段劼..江苏省20种城市绿化树种光合特性及固碳增湿效益[J].福建林业科技,2025,52(3):74-85,12.基金项目
中铁工程设计咨询集团有限公司科技开发计划课题(研2022-37) （研2022-37）
