贵阳市及其郊区土壤-大气界面间汞交换通量的初步研究
Mercury flux at air/soil interface in Guiyang and its suburbs
查看参考文献26篇
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文摘
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利用动力学通量箱与高时间分辨率测汞仪联用技术对贵阳市市区及其郊区4个点的土壤-大气界面间的汞交换通量进行了测定,用小型多功能气象仪记录了采样期间的气象参数.结果显示:4个采样点的大气汞含量都明显高于全球背景值(1.5～2.0ngm-3),显示出贵阳市市区及郊区都遭受了不同程度的大气汞污染.土壤-大气界面间的汞交换通量与光照强度具有显著的相关关系,与土壤温度也有很好的相关性. |
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其他语种文摘
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Mercury flux at the air-and-soil interface in Guiyang and its suburbs was measured with the dynamic flux chamber method. At the same time, meteorological parameters such as air temperature, soil temperature, humidity, solar radia-tion, wind direction and wind speed were recorded with a multi-function mini-weather station. The results at these four sites, show that concentrations of mercury in the air were significantly elevated over the global background values (l.5~2.0ngm-3 ), which indicates that the air of Guiyang and its suburbs was polluted to a varying extent due to anthropogenic atmospheric mercury emissions. The results also illustrate that Hg flux was significantly correlated with both solar radiation and soil temperature. |
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来源
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土壤学报
,2005,42(1):52-58 【核心库】
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关键词
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贵阳市
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郊区
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土壤
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大气
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汞
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交换通量
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地址
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中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵州, 贵阳, 550002
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0564-3929 |
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学科
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农业基础科学 |
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基金
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中国科学院“百人计划”项目
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国家自然科学基金
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文献收藏号
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CSCD:1871998
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