黑龙江黑土区农田土壤/大气界面汞交换通量特征研究  

Exchange flux of mercury on soil/air interface in black soils of Heilongjiang Province

作　　者：刘飞[1,2] 成杭新[2] 杨柯[1,2] 赵传冬[2] 彭敏[1,2] 李括[1,2] 刘应汉[2] 

机构地区：[1]中国地质大学(北京)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

出　　处：《地学前缘》2015年第3期402-410,共9页Earth Science Frontiers

基　　金：中国地质调查局土地质量地球化学调查评价专项项目(1212011220054,1212011220055,12120113001700)

摘　　要：运用动力学通量箱与Tekran 2537B气态汞分析仪技术,对黑龙江省黑土区农田土壤/大气界面汞交换通量进行了实地监测,结果显示不同地区黑土的汞交换通量存在显著差异,7个监测点土壤/大气界面汞交换通量均值为(69.46±37.08)ng·m-2·h-1,接近我国典型城市城区土壤/大气界面汞交换通量平均水平。影响因素分析显示,土壤汞含量影响土壤释汞能力,汞交换通量与总辐射强度、土壤温度、土壤湿度和风速呈显著正相关,与相对湿度呈显著负相关,与大气压不相关。The mercury fluxes through soil/air interface monitoring were conducted in black soils in Heilon^iang field, using a dynamic flux chamber coupled with a Tekran 2537 B Ambient Mercury Vapor Analyzer. The average value of the mercury fluxes through soil/air interfaces in seven studied suites was 69.46 ± 37.08 ng · m2 · h-1, whieh was close to that measured in cities of China. The effects of environmental factors on the mercury fluxes were analyzed. The soil mercury concentration affected the releasing ability of Hg of soils. The mercury exchange fluxes showed significantly positive correlations with total solar radiation intension, soil temperature, soil moisture and wind speed, significantly negative correlation with the relative humidity, and no correlation with atmospheric pressure.

关 键 词：黑土 农田 土壤/大气界面 汞交换通量 影响因素 

分 类 号：P595[天文地球—地球化学] S153.6[天文地球—地质学]