THE EFFECT OF ATMOSPHERIC MERCURY ON THE ACCUMU LATION OF MERCUPY IN SOIL PLANT SYSTEM
大气汞对土壤─植物系统汞累积的影响研究

This paper deals with the harmfulness and the mechanism of atmospheric mercury pollution on soil plant system by using laboratory simulation experiments.The results showed that plant can intake mercury both from the air and the soil.The concentration of mercury in the shoots is higher than that in the roots when mercury is absorbed from the air,and vice versa when mercury is taken up from the soil.Mercury source accumulated in the soil may directly comes from the air,or originates from the input of plants.Mercury from the air is more easily absorbed by the soil when humus is added in the soil.By covering plastic film,mercury is effectively prevented from being absorbed by the soil.