摘要
以昆明市16种常用道路绿化树种为研究对象,测定其秋季光合速率和叶面积指数,对其固碳释氧效益进行定量比较研究,并进行聚类分析。结果表明:16种乔灌木的单位叶面积固碳量和释氧量分别为5.47~12.32、3.98~8.96 g/(m^2·d),单位土地面积固碳量和释氧量分别为22.11~174.03、16.09~126.63 g/(m^2·d);单株植物秋季固碳量为2.82~233.02 kg,释氧量为1.88~169.55 kg;广玉兰、香樟和滇朴的秋季固碳释氧能力依次居于前3位。乔木和灌木的单位叶面积固碳释氧能力各分为3级;乔木单位土地面积固碳释氧能力分为2级,灌木则分为3级,其中乔木的固碳释氧效益高于灌木。因此,广玉兰与香樟等为主要道路绿化乔木,搭配小叶女贞、山茶、红花檵木等灌木为辅的道路绿化模式,较适宜昆明市道路绿化。
Sixteen species of roadside greening tree in Kunming City were selected for study. The net photosynthetic rate and leaf area index of tested trees were observed. and the capacity of carbon fixation and oxygen capacity was estimated quantitatively by clustering analysis. The results showed that the carbon content per unit area of the 16 commonly used green plants was 5. 47-12. 32 g/（m^2 ·d）, and the oxygen release was 3. 98-8. 96 g/（m^2 · d）; The carbon content of the land area is 22. 11- 174. 03 g/（m^2 · d）, the release oxygen content is 16. 09- 126. 63 g^（ m^2· d）, the carbon storage capacity of single plant was 2. 82-233. 02 kg in autumn. The oxygen released in autumn was 1. 88-169. 55 kg. Magnolia grandiflora, Cinnamomum glanduliferum, Celtis kunmingensis autumn carbon fixation and oxygen release ranked first in the top three. The affiliated leaf area of trees and shrubs was divided into 3 levels of carbon fixation and oxygen release capacity; the arable and carbon releasing capacity of arbors per unit area was divided into 2 grades, and the shrubs were divided into 3 grades, among which the efficiency of carbon fixation and oxygen release of trees was higher than that of shrubs. Therefore, Magnolia grandiflora and Cinnamomum glanduliferum are the main road greening trees, and the road greening mode supplemented by shrubs like Ligustrum quihoui, Camellia japomica, Loropetalum chinense, and other shrubs is more suitable for road greening in Kunming.
作者
李琬婷
杨艺宁
程小毛
黄晓霞
Li Wanting;Yang Yining;Cheng Xiaomao;Huang Xiaoxia(Landscape Architecture Engineering Research Center of State Forestry Administration,College of Landscape Architecture,Southwest Forestry Lniversity,Kunming Yunnan 650224,Chin)
出处
《西南林业大学学报（自然科学）》
CAS
北大核心
2018年第4期76-82,共7页
Journal of Southwest Forestry University：Natural Sciences
基金
云南省应用基础面上项目(2010ZC264)资助
西南林业大学"风景园林学"重点学科建设经费资助
关键词
固碳释氧
绿化树种
道路绿化
昆明市
carbon fixation and oxygen release
greening tree species
roadside greening
Kunming
