Factors influencing the concentration of negative air ions during the year in forests and urban green spaces of the Dapeng Peninsula in Shenzhen, China

查看全文 作　　者：Yafei [1,2]Wang;Zhuobiao [1,2]Ni;Di [1,2]Wu;Chen [3]Fan;Jiaqi [1,3]Lu;Beicheng [1,2]Xia

机构地区：[1]School of Environmental Science and Engineering,Sun Yat-sen University,135 Xingang Xi Road,Guangzhou 510275,People’s Republic of China;[2]Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology,Sun Yat-sen University,135 Xingang Xi Road,Guangzhou 510275,People’s Republic of China;[3]Shenzhen Degrees of Freedom Environmental Protection Science and Technology Co.,Ltd.,Shenzhen,People’s Republic of China

出　　处：《Journal of Forestry Research》索引2020年第31卷第6期,共11页

基　　金：The authors acknowledge the volunteers who helped with the fi eld investigations. 摘　　要：Negative air ions(NAIs)benefit the mental and physical health of humans,but rapid urbanization can decrease the abundance of NAIs.Quantifying the spatial and seasonal distribution of NAIs and determining the factors that infl uence the concentration during urbanization is thus essential.In the present study of a typical developing urban district in southern China,negative air ion concentrations(NAICs)in 60 forests sites and 30 urban green spaces were quantifi ed on seven consecutive days in each of the four seasons.Large seasonal variations in NAIC were revealed in forests and urban green spaces with trough values in summer.NAIC progressively decreased from forests to urban green spaces and was infl uenced by local land morphology,vegetation characteristics,and climatic factors.The vast,heavily vegetated northeastern region was the richest area for NAIs,whereas the narrow central region(urbanized area)was the poorest,implying dramatic impacts of urbanization on the spatial distribution of NAIs.The relationship between air temperature and NAIC was better fi tted with a quadratic equation than a linear equation.Moreover,the NAIC was more sensitive to local morphology in urban green spaces than in urban forests,indicating the vulnerability of NAIs in urbanized areas.Therefore,the appropriate design of local urban morphology is critical. 关键词：FORESTS Negative air ion concentration Urban green spaces SHENZHEN

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Factors influencing the concentration of negative air ions during the year in forests and urban green spaces of the Dapeng Peninsula in Shenzhen, China

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