【摘要】 研究了长春市主要木本植物杨树、榆树、柳树、油松和落叶松不同器官中的总汞含量。结果表明 ,长春市植物存在着一定程度的汞污染。其中毛白杨、垂柳和油松对汞的吸收能力较低 ,落叶松叶的吸收能力较高 ,榆树吸收汞的能力最高。植物不同器官总汞含量存在着差异 ,除油松外 ,树叶 >树皮 >树茎 ,油松为树叶 >树茎 >树皮 ,各器官总汞含量呈正相关。植物总汞含量的空间特征为公路 >公园 >对照点 ,表明交通是影响植物总汞含量的一个重要因素。植物秋季总汞含量高于春季 ,表明植物在生长季节中累积汞更多还原

【Abstract】 THg (Total mercury) concentration of typical plants in Changchun city was studied. The result indicated that plants have been contaminated by mercury to a certain extent, and difference exists in the THg content of different plants. Hg absorbency of white poplar, willow and pine was low, while that of the larch was high with the elm being the highest. In different components of plants, mercury contents were in the order of: leaf > bark> stem, and the pine was leaf > stem > bark. There was positive correlation between different components of plants. In different sites, THg content of plants was different(road > park > contrast site), indicating that traffic was an important factor affecting THg content of plants. THg content of plants was higher in autumn than in spring, indicating that plant leaf accumulates mercury with seasonal change.更多还原