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当前位置: 首页 > 文章 > 徽县洛坝铅锌矿废渣地植被及优势种竞争强度研究 农业环境科学学报 2008,27 (05) 1764-1768
Position: Home > Articles > Vegetation and Competitive Intensity of Dominant Plants in Wasteland of Lead-Zinc Mine in HuiXian LuoBa Journal of Agro-Environment Science 2008,27 (05) 1764-1768

徽县洛坝铅锌矿废渣地植被及优势种竞争强度研究

作  者：
谢永;张仁陟;董博;赵建华;徐华伟
单  位：
甘肃农业大学资源与环境学院
关键词：
徽县;铅锌矿;废渣地;植被;竞争强度
摘  要：
通过对徽县洛坝铅锌矿废弃时间不同的废渣地化学分析表明,主要污染物类型为重金属Pb、Zn,最高含量Pb为6298mg·kg-1、Zn为480800mg·kg-1。重金属在废渣地含量随废弃时间增长而减少,对其自然恢复植被的物种调查发现废渣地Pb、Zn浓度是影响植物自然定居的限制因子。本文在现场踏查的基础上对洛坝废渣地进行了生态调查。结果表明,本次调查共记录的35种植物,隶属16个科20个属,多为1￣2年生草本植物,优势植物是以野艾蒿为代表的菊科。11年废渣地以野艾蒿+车前草、野艾蒿+小亚麻芥等稳定群落为主;6年废渣地多以野艾蒿、马升塘、灰绿藜等单种群存在;3年废渣地植物则表现为稀少的节节草+苍耳群落和一个不稳定植物斑块;11年废渣地正形成良好的植被。对废渣地的优势植物竞争性分析表明,竞争植株盖度与竞争强度呈正相关;种内和种间竞争总强度分别为4.063、3.031。优势植物的竞争强度来自种内,野艾蒿是可以作为在铅锌矿废渣地植物恢复的优势植物。
译  名：
Vegetation and Competitive Intensity of Dominant Plants in Wasteland of Lead-Zinc Mine in HuiXian LuoBa
作  者：
XIE Yong, ZHANG Ren-zhi, DONG Bo, ZHAO Jian-hua, XU Hua-wei ( College of Resources and Environmental Sciences,Gansu Agricultural University, Lanzhou 730070, China)
关键词：
Huixian; Lead-zinc mine; wasteland; vegetation; competitive intensity
摘  要：
The Chemical analysis on difference time of wasteland in lead-zinc mine in HuiXian LuoBa indicates that the main pollutant type is some heavy metals such as Pb、Zn and so on. The soils contained exceptionally high concentrations of Pb, Zn. The highest content of Zn= 480 800 mg·kg-1 and Pb=6 298 mg·kg-1. The heavy metal contains in wasteland are decreasing with the abandon time growing. Discove from the species investigate on plant instauration that the phytotoxicity ofPb、Zn may be the major obstacle factor for plants to object on the waste- land. In the investigation, Record 35 species plants found growing on the wasteland. They belong to 16 sections and 20 families. Many of them are annual plants or two- year plants. The dominant species is Artemisia vulgaris of compositae. There are mainly microcoenses such as Artemisia vulgaris+Plantago asiatica and Artemisia vulgaris community+Camelina microcarpa community in 11 a wasteland. But there are manymicrocoenses such as Artemisia vulgaris, Digitaria sanguinalis, Chenopodiumglaucumsingle population in 6 a wasteland. 2 plants were composing of a community scarcely of Equisetum ramosissimum+Xanthium sibiricum and one unstable plaque of plants in 3 a wasteland. Better vegetation is forming on 11 a wasteland. The competition intensity of dominant species has a strong relativity to the coverage of competitors. Intra-specific competition intensity is 4.063. Inter-specific competition intensity is 3.031. Competitive intensity of dominant plants was coming from intra-specific competition. Artemisia vulgaris of dominant species that it is widespread used phytoremediation of wasteland in lead-zinc mine.

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