| 广州市土壤—大气界面Hg交换通量研究 |
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| 引用本文： | 刘飞,成杭新,杨柯,等. 广州市土壤—大气界面Hg交换通量研究[J]. 物探与化探, 2014, 0(2): 331-338 |
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| 作者姓名： | 刘飞 成杭新 杨柯 等 |
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| 作者单位： | [1]中国地质大学地球科学与资源学院,北京100083; [2]中国地质科学院地球物理地球化学勘查研究所地球表层碳-汞地球化学循环重点实验室,河北廊坊065000 |
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| 基金项目： | 中国地质调查局地质调查项目（1212011220054、1212011220055、12120113001700） |
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| 摘 要： | 运用Tekran 2537 A与动力学通量箱联测技术,对广州市5个绿化带和草地土壤—大气界面汞交换通量进行了实地监测,结果表明,广州市5个监测点土壤—大气界面汞交换通量密度均值为7.341±9.714 ng·m-2·h-1,不同地点土壤—大气汞交换通量密度有显著差异。汞交换通量密度随土壤汞含量的增加而增大,气象条件显著影响汞交换通量,汞交换通量密度与光照和土壤温度呈显著正相关关系,与土壤pH呈负相关关系,降雨和植被显著影响汞交换通量。
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| 关 键 词： | Hg交换通量 土壤—大气界面 土壤地球化学 城市环境监测 广州 |
RESEARCH OF MERCURY EXCHANGE FLUX BETWEEN SOIL AND AIR IN GUANGZHOU CITY |
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| Affiliation: | LIU Fei, CHENG Hangxin, YANG Ke, ZHAO Chuandong, LI Kuo, PENG Min, LIU Yinghan ( 1. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China ; 2. Key Laboratory of Geochemical Cycling of Carbon and Mercury in the Earth＇s Critical Zone, Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Lartgfang 065000, China) |
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| Abstract: | The mercury fluxes between soil-air interfaces in 5 lawns of Guangzhou City were monitored by using a dynamic flux chamber coupled with a Tekran 2537A Ambient Mercury Vapor Analyzer. The average value of the mercury fluxes between soil-air interfaces in 5 monitoring points was 7.341＆#177;9.714 ng＆#183;m-2 ＆#183;h-1 . The effects of environmental factors on the mercury fluxes were examined. The soil mercury concentration affected the releasing capability of Hg in soils. The mercury exchange fluxes showed significant positive correla-tions with total solar radiation intensity and soil temperature and significant negative correlations with the pH values. It was also found that the rainfall and vegetation significantly affected the mercury fluxes. |
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| Keywords: | mercury exchange flux soil-air interface soil geochemistry urban environment monitoring Guangzhou |
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