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漳江流域沿岸植物叶片中Si元素含量的变化
Authors
关少华
叶文
+4 more
李振基
杨伟伟
汪秀芳
陈圣宾
Publication date
15 November 2007
Publisher
Abstract
该文研究了漳江流域沿岸48种植物成熟叶片中Si元素含量及其随环境因子和在不同植物类群中的变化.结果表明,这些植物叶片平均Si含量为1.23%;不同植物叶片Si含量差异显著,含量最高的是笔管草,达5.88%;最低的是桃金娘,仅0.02%.48种植物中的17种是Si积累者,叶片Si平均含量为2.53%;31种是非积累者,叶片中Si平均含量为0.28%.从植物所属科来看,含Si量较高的主要有禾本科、木贼科、紫萁科、凤尾蕨科、鸭跖草科和桑科植物.研究还发现从上游到下游,土壤Si含量随土壤粘粒含量和含水量的升高而增加.马缨丹和鸭跖草叶片Si含量与对应土壤的有效Si含量呈正相关,桐花树和秋茄叶片Si含量与对应土壤的盐度呈正相关
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Last time updated on 16/06/2016