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作 者 ：孔令韶, 孙世洲, 罗金铃, 黄宗琪

期 刊 ：植物生态学报 1988年 12卷 1期 页码：40-50

关键词：铅锌矿区；植物群落；植物地球化学；

Keywords:Lead-Zinc deposit, Phytocommunity, Phytogeochemistry,

摘 要 ：通过青海锡铁山铅、锌矿区植物群落和植物中铅，锌含量特征的调查研究表明：该区植被为荒漠植被类型。矿带上的植物群落与非矿带上的相比较，群落中种属数目更少，覆盖度更低，植物生长更低矮。植物灰分中的锌含量(平均)为125.9—1144ppm。膜果麻黄(Ephedra przewalskii)含量最高，变化范围最大，为86.11—5871.88ppm。植物中的铅含量为31.32—1129.6ppm。黑柴(Sympegma regelii)含量较高，变化最大，平均为746ppm，极值为14.3—5561.70ppm。在矿带上含量最高，非矿带对照区含量最低。植物及其生长的土壤中金属元素含量之间的关系，无论是铅还是锌含量都有很好的线性关系。膜果麻黄、黑柴、优若藜(Eurotia ceratoides)和中亚紫菀木(Asterothamnus centrali-asiaticus)等植物相关系数均达显著相关水平(α≤0.05)。 这在植物地球化学勘探上是非常有用的。例如中亚紫菀木和琵琶柴(Reaumuria soongorica)中铅的植物地球化学异常，准确地圈出了铅、锌矿的位置，衬度高，异常范围与矿化区基本吻合。

Abstract:The types of the plant communities in the Xitieshan Mountain mining region are discussed. The number of species of plant communities in mineralized zones are less than that of non-mineralized zones, and the individual plants in the former are also smaller and shorter and the coverage is less than those in the latter.Analysis of Pb, Zn contents of plant samples showed: The zinc content (average) in the plant ash is from 126 to 1144 ppm. The average Zn content in the ash of Ephedra przewalskii is the highest and the variable range is very large, from 86 to 5872 ppm. The lead content (average) in ash of the plants is 31.3—1129.6ppm. The lead content in the ash of Sympegma regelii is higher than others, and the variable range is the largest, from 14.3 to 5561.7 pp m, the average value is 745 ppm. The highest value of Pb and Zn occurs in the mineralized zones, and the lowest in the non-mineralized ones.Between either lead or zinc contents in plants and the soils in which they grow there is very good liner relationship. The correlation coefficents for Ephedra przewalshii, Asterothamuns centrali-asiaticus, Sympegma regelii and Eurotia ceratoihes et al. go up to close correlative levels (P≤0.05). This is very useful in phytogeochemical exploration,for example,the lead phytogeochemical anomalies of A. centraliasiaticus and Reaumuria soongorica indicate accurately the range of Xitieshan Pb-Zn deposits. The phytogeochemical haloes are high contrast, and the anomalous range tallies basically with the mineraization areas.

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