交通节能与环保2025，Vol.21Issue(2)：106-110,5.DOI:10.3969/j.issn.1673 6478.2025.02.021
公路绿化带土壤CH4吸收通量特征及其环境因素关联性研究
Study on the Characteristics of CH4 Absorption Flux in Soil of Highway Greening Land Belt and the Correlation with Environmental Factors
摘要
Abstract
Relied on the positioning observation of the greening land of Jintang Expressway(S40),this study used a static dark box gas chromatography method to conduct a complete year of in-situ observation and study on the soil CH4 absorption flux and its auxiliary environmental factors of greening grasslands and locust tree forests.The results showed that the cycle of soil CH4 absorption flux in locust tree fields was significantly affected by changes in soil temperature and humidity.The higher the soil temperature and humidity are,the smaller the CH4 absorption flux in locust tree fields is.During the experimental period,the CH4 absorption intensity of grassland and locust tree soil were 40.276 6 μgC·m-2·h-1 and 53.649 3 μgC·m-2·h-1,respectively.The total annual CH4 absorption range in grassland and locust tree soil was 3.528 2～4.699 4 kgC·ha-1·a-1.From the perspective of the annual cycle,different vegetation soils all exhibit CH4 sink function,the total CH4 absorption of locust tree soil is significantly higher than that of grassland.关键词
公路绿化用地/甲烷吸收/土壤温度/土壤湿度Key words
highway greening land/methane uptake/soil temperature/soil moisture分类
资源环境引用本文复制引用
李广涛,姚兵,吴世红,葛丽燕,许刚,金辉虎,熊红霞..公路绿化带土壤CH4吸收通量特征及其环境因素关联性研究[J].交通节能与环保,2025,21(2):106-110,5.基金项目
天津市交通运输科技发展计划项目(2023-6) （2023-6）
