作 者：
戴忠炜;姜禹;黄思颖;林钰珺;吴涌平;兰思仁
单 位：
福建农林大学林学院;福建农林大学园林学院
摘 要：
以福建农林大学为例,选取香樟、木棉、悬铃木和榕树4种主要遮荫乔木作为研究对象,利用UVB辐射记录仪测定树木遮荫及全日照条件下UVB辐射强度,并从天空和地面辐射同时进行测量,分析不同树种的UVB辐射差异,从而优化遮荫植被对高密度人群地的紫外辐射.结果表明:不同遮荫植被林下的UVB天空辐射日总量的主要影响因素是植被的叶面积指数,叶面积指数越大,UVB日辐射总量越小;不同遮荫植被林下的UVB地面辐射日总量的主要影响因素,除了与UVB天空辐射强度有关,还与植被的林下覆盖物有关,林下地被植被的UVB辐射吸收效应要明显优于硬质路面;无论是UVB天空辐射,还是UVB地面辐射,树荫下和全日照下的辐射值具有显著的差异,可见遮荫植被对UVB辐射具有很好的屏蔽效应.
译 名：
Effect of shade vegetation on UVB radiation in high-density population:A case study of Fujian Agriculture and Forestry University
作 者：
DAI Zhongwei;JIANG Yu;HUAN Siying;LIN Yujun;WU Yongping;LAN Siren;College of Forestry,Fujian Agriculture and Forestry University;College of Landscape Architecture,Fujian Agriculture and Forestry University;
单 位：
DAI Zhongwei%JIANG Yu%HUAN Siying%LIN Yujun%WU Yongping%LAN Siren%College of Forestry,Fujian Agriculture and Forestry University%College of Landscape Architecture,Fujian Agriculture and Forestry University
关键词：
UVB radiation;;shady vegetation;;high density crowd
摘 要：
In this study,Fujian Agriculture and Forestry University was taken as an example.The four main shading trees,namely camphor,kapok,sycamore and eucalyptus,were selected as the research objects.The UVB radiation recorder was used to measure the UVB radiation intensity under shading and full sunlight conditions.Simultaneous measurement from the sky and ground radiation,analysis of UVB radiation differences of different tree species,so as to effectively optimize the ultraviolet radiation of the shaded vegetation to high-density population.The results showed that:The main influencing factors of the total amount of UVB sky radiation under different shaded vegetation forests were the leaf area index of vegetation.The larger the leaf area index,the smaller the total amount of UVB daily radiation.The different coverage the main influencing factors of the daily amount of UVB ground radiation under the shaded vegetation forest are related to the UVB sky radiation intensity and the undergrowth cover of the vegetation.The UVB radiation absorption effect of the understory vegetation is obviously due to the hard pavement.Whether it is UVB sky radiation or UVB ground radiation,there is a significant difference in the radiation values under the shade and under full sunlight.It can be seen that the shading vegetation has a good shielding effect on UVB radiation.
