Comparison of Air/Soil Mercury Exchange Between Warm and Cold Season in Hongfeng Reservoir Region
贵州红枫湖地区冷暖两季土壤/大气界面间汞交换通量的对比

In July 2002 and March 2003, the mercury exchange flux between soil and air was measured using dynamic flux chamber method in Hongfeng Reservoir region. Mercury exchange flux is (27.4±40.1) ng·(m2·h)-1 (n=255) and (5.6±19.4) ng·(m2·h)-1 (n=192) in summer and winter respectively. The correlation coefficient between mercury flux and solar radiation, air temperature, soil temperature is 0.74, 0.83 and 0.80 in summer, and 0.88, 0.56 and 0.59 in winter. From the data, it was found that the mercury emission is stronger in summer than that in winter, and compared to winter, mercury exchange between soil and air depends more on meteorological conditions in summer.