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

作　　者：岳嘉瑞 刘文兰[1] 卿平勇[2] YUE Jiarui;LIU Wenlan;QING Pingyong(College of Forestry,Gansu Agricultural University,Lanzhou,Gansu 730070;College of Life Science and Resources and Environment,Yichun University,Yichun,Jiangxi 336000)

机构地区：[1]甘肃农业大学林学院,甘肃兰州730070 [2]宜春学院生命科学与资源环境学院,江西宜春336000

出　　处：《热带农业工程》2025年第1期9-16,共8页Tropical Agricultural Engineering

基　　金：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)。

摘　　要：旨在探究中国西北地区典型植物的固碳和释氧能力,以甘肃省兰州市金城公园常见的20种园林绿化植物(5种常绿乔木、5种落叶乔木、5种落叶小乔木、5种落叶灌木)为研究对象,利用Top-1300冠层仪和3051D便携式光合仪,通过测定乔灌木的叶面积指数和光合生理指标,在不同尺度下,计算了20种园林植物的固碳释氧量,并对其固碳固氧功能进行了分析。结果表明:20种乔灌木叶面积指数为1.42~4.96。日净光合速率、单位叶面积日固碳释氧能力、单位冠幅投影面积日固碳释氧能力排在前三位的均为垂柳,银杏和毛泡桐。在单位叶面积尺度上根据固碳释氧能力的聚类分析结果将常绿乔木分为3个等级,落叶乔木分为3个等级、落叶小乔木分为3个等级、落叶灌木分为2个等级;单位冠幅投影面积尺度上将常绿乔木分为3个等级、落叶乔木分为3个等级、落叶小乔木分为3个等级、落叶灌木分为3个等级。所以,我国西北地区园林绿化中植物配置应优先选用固碳释氧能力强的物种,主要是落叶乔木垂柳与常绿乔木雪松,再配以落叶小乔木红叶碧桃,落叶灌木连翘作为辅助树种。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 

分 类 号：S688[农业科学—观赏园艺]