高速公路路域植被固碳量分析研究  

Study on Carbon Sequestration of Vegetation in Expressway Area

作　　者：龙圣勇 申家成 赵红 董焕焕 LONG Sheng-yong;SHEN Jia-cheng;ZHAO Hong;DONG Huan-huan(Jiangxi Research Institute of Transportation Sciences,Nanchang,Jiangxi 330200,China)

机构地区：[1]江西省交通科学研究院,江西南昌330200

出　　处：《黑龙江交通科技》2022年第3期149-152,157,共5页Communications Science and Technology Heilongjiang

基　　金：江西省交通运输厅科技项目(2018R0017);江西省交通运输厅科技项目(2019C0006)。

摘　　要：以江西省昌樟高速公路为研究对象,根据当地气候特点,对路域植被固碳量进行定量化估算,分析各植被固碳能力,结果表明:该公路路域植被年固碳量为2870 t,其中乔木295 t,灌木2342 t,草本植物233 t;多数植物光合作用速率变化呈双峰型,在每天10∶00和14∶00光合作用速率达到峰值,并会出现光午休现象;少数植物光合作用速率变化呈单峰型,在每天12∶00和14∶00达到峰值;乔木中广玉兰和樟树的固碳能力较强,单株植物平均固碳量分别为151.39 kg和52.93 kg,灌木中夹竹桃的固碳能力较强,单株植物平均固碳量为23.64 kg,不同乔木树种之间固碳能力差异较大,而不同灌木树种之间固碳能力差异不大,总体而言,乔木的固碳能力强于灌木;在后期养护过程中,推荐补种以下树种,乔木:广玉兰和樟树;灌木:夹竹桃和山茶。根据实际情况,合理搭配乔木、灌木和草本植物可以最大化空间利用,从而提高高速公路路域植被的固碳能力。This paper takes the Changzhang Expressway in Jiangxi Province as the research object.According to the local climate characteristics,the road area vegetation carbon sequestration is quantitatively estimated,and the carbon sequestration capacity of each vegetation is analyzed.The results show that the annual carbon sequestration capacity of the road area vegetation is 2870 tons,including 295 tons of carbon sequestration in trees,2342 tons in shrubs,and 233 tons in herbaceous plants.The photosynthesis rate of most plants exhibits a bimodal change,and the photosynthesis rate reaches its peak at 10∶00 and 14∶00 every day.,And there will be a midday depression of photosynthesis;a few plants have a single peak in photosynthesis rate changes,reaching peaks at 12∶00and 14∶00 every day;magnolia and camphor trees have relatively strong carbon sequestration ability in the trees,and the average carbon sequestration per plant of the two plants is 151.39 kg and 52.93 kg,respectively.The oleander in the shrub has a strong carbon sequestration capacity,and the average carbon sequestration per plant is 23.64 kg.There is a large difference in carbon sequestration capacity between different tree species,but thethe difference is little in carbon sequestration capacity between different shrub species.Generally speaking,the carbon sequestration capacity of trees is stronger than that of shrubs.In the later maintenance process,it is recommended to replant the following tree species,trees:magnolia and camphor trees;shrubs:oleander and camellia.According to the actual situation,a reasonable combination of trees,shrubs and herbaceous plants can maximize the use of space,thereby improving the carbon sequestration capacity of the vegetation in the highway area.

关 键 词：高速公路 路域植被 光合作用速率 固碳量 固碳能力 

分 类 号：U415.1[交通运输工程—道路与铁道工程]