北京市六种园林绿化树种对UVB的屏蔽效应  

Screening Effect to UVB of Six Species of Garden Plants in Beijing

作　　者：李海涛[1] 胡东[2] 廖迎春[1] 闫雪东[2] 袁伟静 沈文清[1] 

机构地区：[1]中国科学院地理科学与资源研究所,北京100101 [2]首都师范大学生物系,北京100037 [3]北京市海淀区立新学校中学部,北京100037

出　　处：《城市环境与城市生态》2003年第6期139-141,共3页Urban Environment & Urban Ecology

基　　金：国家自然科学基金(30170152)

摘　　要：我们选取了6种在北京市具有代表性的园林绿化树种:毛白杨(PopulustomentosaCarr)、圆柏(Sabinachi nensis)、国槐(Sophorajaponica)、银杏(Ginkgobiloba)、大叶白蜡(Fraxinusrhychophylla)、悬铃木(Platanusacerifolia)作为研究对象,利用美国Yankee公司产紫外线日射强度计UVB-1,测得它们在有荫与无荫情况下的UVB辐射强度值,并计算了它们对UVB的屏蔽效率。结果表明:大叶白蜡的屏蔽效率最高,为88.44%;其次为银杏,为85.23%;第三为悬铃木,为72.45%;而国槐、圆柏、毛白杨的屏蔽效率则分别为62.85%,58.00%和57.37%。Six species of garden plants,Populus tomentosa Carrs,Sabina chinensises,Sophora japonica,Ginkgo biloba,Fraxinus rhychophylla,Platanus acerifolia,are chosen as representatives:to examine their screening effect to UVB.By using the UVB-1 pyranometer sensor produced by the Yankee campany of U.S.A,the UVB radiation values are measured in shade conditions and in sunshine,and the shielding efficiency of the examined tree species to UVB is calculated.The results show as that:Fraxinus rhychophylla has the highest screening effect,88.44%,followed by Ginkgo biloba 85.23% and Platanus acerifolia 72.45%.The screening effects of Sophora japonica,Sabina chinensis and Populus tomentosa Carr are 62.85%,58.00% and 57.37%,respectively.

关 键 词：北京 园林绿化树种 UVB 屏蔽效应 辐射 

分 类 号：X173[环境科学与工程—环境科学]