Abstract:

In China, there are many mining abandoned lands. Regeneration of mining abandoned lands is always a difficult problem. By field investigation-plant filtering-popularizing method, the article studied on not only nutrition element contents of plant but also physical and chemical characteristics and heavy metals contents of soil sampled in Xiangtan manganic mining abandon lands, Hunan Province. The results showed:the soil of tailing abandoned land was mainly consisted of the sandy powder, it happened to plash in the raining day for the poor ventilation and infiltrative coefficient. By contraries, the slag wasteland had bigger infiltrative coefficient, evaporation, and bad accumulation and tolerate-drought. The nutrition element content of soil in the two kinds of abandoned lands were low, but it had the higher contents of Mn and Cu, which had strong poision. Among plants settled down in the two abandoned lands, Phytolacca acinosa and Arthraxon hispidus were two hyperaccumulator plants. By analysis, plant situ-rehabilitation would be a economic and efficient method for generation to this wastelands.

Key words: mining abandoned lands, soil physical and chemical properties, resistant plants