江西大余县荡坪钨矿尾矿区自然植物组成及其重金属富集特征

摘要/Abstract

摘要：

研究江西大余县荡坪国有钨矿尾砂库区自然植物组成分布及其重金属富集特征，旨在为今后矿区植被重建与植物修复重金属污染土壤提供科学依据。结果表明：库区共出现了20种植物，隶属15科20属，其中草本植物14种，木本植物6种；这些植物明显生长不良，且主要分布在库区湿润或有水出现的沙土地区。尾砂库区中，不同重金属含量在同一植物体内大小趋势为Zn>Pb>Cu>Cd。库区没有发现重金属的超富集植物，大部分为Cu、Pb、Zn、Cd的耐性植物。荡坪尾砂库区土壤Cd污染严重，木贼与蜈蚣草为Cd的避性植物，可用于库区Cd污染土壤的植被重建先锋物种；土荆芥与香附子为Cd的积累植物，可以用于库区Cd污染土壤的植物修复；其它植物为Cd的排斥植物，可用于库区Cd污染土壤的植物固化.

关键词: 钨矿尾砂库区/ 自然植物/ 重金属/ 富集

Abstract:

The characteristics of composition and accumulation of natural plant was investigated in Dangping nationalized wolfram mine tailing wasteland areas of Dayu County，and the purpose of study was to provide some scientific foundations for revegetation and phytoremediation of heavymetalspolluted soil for mine area in future.The result showed that there were 20 species of natural colonized plants on wolfram mine tailing yard，subordinated to 20 genera and 15 families，and 6 wood species and 14 herb species among them.The natural plants did not grow well and mainly distributed on sandsoil region of humidity or water.Concentrations of heavy metals followed the order Zn>Pb>Cu>Cd of the same plant in tailing wasteland areas.Hyperaccumulators did not be found，and most of plants were tolerant plant of Cu，Pb，Zn and Cd in tailing wasteland areas.Cd contamination of soil was serious in Dangping nationalized wolfram mine tailing wasteland areas.〖WTBX〗Equisetum hiemale〖WTBZ〗 and 〖WTBX〗Pteris vittata〖WTBZ〗 were repellence plant of Cd，which could be used of the pioneer plants of revegetation for soil by Cd contamination.〖WTBX〗Chenopodium ambrosioides〖WTBZ〗 and 〖WTBX〗Cyperus rotundus〖WTBZ〗 were Cd accumulation plant，which could be used of the phytoremediation for soil by Cd contamination.The other plants were repellent plant of Cd，which could be used of the phytostabilization for soil by Cd contamination.

Key words: wolfram mine tailing wasteland areas/ natural plants/heavy metal/ accumulation

刘足根, 彭昆国, 方红亚, 李惠民, 廖兵. 江西大余县荡坪钨矿尾矿区自然植物组成及其重金属富集特征[J]. 长江流域资源与环境, 2010, 19(2): 220-.

LIU Ju-Gen, BANG Hun-Guo, FANG Gong-E, LI Hui-Min, LIAO Bing. CHARACTERISTICS OF COMPOSITION AND ACCUMULATION OF HEAVY METAL OF NATURAL PLANT ON DANGPING WOLFRAM MINE TAILING WASTELAND AREAS OF DAYU COUNTY IN JIANGXI PROVINCE[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2010, 19(2): 220-.

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