作　　者： ; ; ; ; ;

机构地区： 中华人民共和国环境保护部

出　　处： 《湖北农业科学》 2012年第2期250-254,共5页

摘　　要： 对长江中下游的4个大型铜矿区(湖北铜绿山古铜矿区、湖北铜山口铜矿区、安徽铜官山铜矿区和江苏伏牛山铜矿区)进行了土壤和植被调查。结果表明,各矿区土壤中含铜量极高,平均值范围为3 810～8 633 mg/kg,高铜可能是限制植物定居的因素。4个矿区均形成了以草本植物为主体的良好植被,调查共记录高等植物种67种,隶属27科60属,共有的优势种包括海洲香薷、蝇子草、鸭跖草、头花蓼。4种优势植物的分布、植物体内铜含量与土壤中铜含量有一定的相关性,表明它们都有一定的铜指示作用,并且这些植物的单优群落或者它们的集合具有更高的指示价值。综合植物体铜含量及其对应土壤中的铜含量,认为海洲香薷、鸭跖草、蝇子草、头花蓼4个共有优势种以及酸模叶蓼、滨蒿、蚤缀、瞿麦等都是铜耐性植物,特别是前4种,即4个矿区所共有的优势植物种群更适于铜污染土壤的植被重建和植物修复。 A field survey in four large copper mining areas（Tonglushan and Tongshankou in Hubei Province,Tongguanshan in Anhui Province,and Funiushan in Jiangsu Province） along middle-lower-Yangtze was conducted to find Cu-indicator or Cu-tolerant plants.Chemical analysis indicated that the soil contained sky-high concentration of Cu ranging from 3 180～8 633 mg/kg.The phytotoxicity of Cu might be the limiting factor for plants natural colonization.A total of 67 species belonging to 60 genera and 27 families were found growing on the four mining areas,where the dominant species included Elsholtzia haichowensis,Silene fortunei,Commelina communis,and Polygonum capitatum.There was certain correlation between the distribution,Cu concentration of the four dominant species and Cu concentration in the associated soil.Results indicated that the four dominant species as well as Pteris hydropiper,Artemisia annua,Dianthus superbus,and Arenaria sp.,especially the four dominant species were Cu-tolerant plants.The shared dominant species in the 4 mining zone would be suitable for vegetation reconstruction and restoration of Cu contaminated.

关 键 词： 植被 铜矿区 耐性 长江中下游

领　　域： [生物学] [环境科学与工程]