大余县钨矿尾砂库区天然生长植物研究

研究了大余县4大国有钨矿尾砂库上天然生长的植物,旨在为今后矿区植被重建与植物修复重金属污染提供材料.通过野外调查分析,对4大钨矿尾砂库区所有植物组成、生长与生境状况进行了研究.结果表明:这4大尾砂库区共出现了61种植物,隶属35科,59属,其中49种为草本植物,12种为木本植物.禾本科和菊科占所有植物种数的29.5%.这些植物中,只有木贼、莎草和狗牙根3种植物在4个尾砂库中都有出现.植物明显生长不良,且主要分布在库区湿润或有水出现的沙土地区.另外,在钨矿尾砂库区,发现了商陆、龙葵和蜈蚣草等重金属的超积累植物.

Study on Natural Plants Growing on the Tailing of Tungsten Mine in Dayu County

Natural plants growing on the tailings of four state tungsten mines were studied in Dayu County,which would provide materials of re - vegetation and phytoremediation of heavy metal contaminated soil for the future. Composition, growth and habitat of plants of four state tungsten mines were investigated and analyzed in South Jiangxi. The results showed that there were 61 species of 59 genera belonging to 35 families, and there were 49 species of herb plants and 12 species of wood plants. Gramineous and composite plants accounted for 30% of all plants. Among these plants, only Equisetum hiemale, Cyperus rotundus and Cynodon dactylon inhabit in all four tungstrn mine. However, those plants did not grow well, and mainly distributed on stand - soil region of humidity or water. Additionally, plants hyperaccumulating heavy metals were found in four state tungsten mines, such as Phytolacca acinosa, Vitex negundo and Solanum nigrum.