植硅石在全球硅生物地球化学循环中的作用  

Function of Phytolith in the Circulation of Biogeochemistry of Biology Silicon in the World

作　　者：薄勇[1] 

机构地区：[1]厦门大学海洋与环境学院,厦门361005

出　　处：《建材世界》2009年第5期121-123,共3页The World of Building Materials

摘　　要：植硅石(Phytolith)又名植物蛋白石、植物硅酸体,是指植物细胞组织中的非晶质含水二氧化硅(SiO2.nH2O)。它可以在土层和沉积物中很好的保存。因此通过对植硅石形态的鉴定以及确定组合带,可以恢复古植被情况,讨论植物群落演替,推断古气候环境的变化及其变迁。植硅石是一种主要的无定型硅,它是通过植物的吸收沉积作用将地表的溶解硅组分转化而得到的一种独特的硅体。此外植硅石的陆源输入是海洋无定型硅的一个主要的源,河流输入的生物硅中植硅石约占90%,因此植硅石对于全球生物硅的生物地球化学循环起着很重要的作用。Phytolith can be also called plant opal or plant silica. It is noncrystal hydrated silicon dioxide in plant cell. It can resume archaic vegetation status, discuss vegetation evolvement and deduce archaic climate variance by authentication of Phytolith configuration and combination status. Phytolith is one of main amorphous silicon （ASi）. Plant assimilates deliquescent silicon in the earth＇s surface and deposits and transforms it to Phytolith. So the Phytolith is special silicon. Furthermore terrestrial import of Phytolith is one of main import on ocean amorphous silicon. 90 % of biology silicon that import from river to ocean is Phytolith; therefore Phytolith has important effect on the circulation of biogeochemistry of biology silicon in the world.

关 键 词：植硅石 生物硅 生物地球化学循环 

分 类 号：P593[天文地球—地球化学]