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shu mu nian lun dui da qi wu ran li shi guo cheng de zhi shi zuo yong
Author(s): 
Pages: 17-20
Year: Issue:  2
Journal: Urban Environment & Urban Ecology

Keyword:  树木年轮大气污染历史油松承德市;
Abstract: 本文利用油松年轮揭示了承德市向1760年以来大气SO_2污染过程,结果认为:油松年轮内的硫自44.4μgg ̄(-1)上升到最近10年来的420.7μgg ̄(-1),从而揭示出大气中的SO_2浓度从0.1μgm ̄(-3)上升到目前的>30μgm ̄(-3),增加了近300倍。这一过程与承德市城市化,尤其是工业化过程密切相关。
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