荒漠地区15种植物的元素含量

Major and minor elements content for fifteen-five vegetation samples in desert areas

采集了15种荒漠地区常见植物的样品,基于X射线荧光光谱法对其元素含量进行了测定。结果表明:组成荒漠地区植物的常量元素主要有Cl、S、P、Ca、Si、Al、K、Na和Mg,微量元素主要有Sr、Rb、Br、Zn、Cu、Ni、V、Ti、Ba、Mn和Fe。不同种类植物中各元素的含量不同,体现了植物因遗传生理特性的不同而对环境元素选择吸收的特点。15种荒漠植物的常量元素组成的典型特征是富Ca、K贫Na,表明生境对各类植物化学成分含量的统一影响。属于同科的植物化学元素组成比较接近,说明植物元素化学成分可作为植物分类的标志之一。

Fifteen-five kinds of vegetation samples were collected in desert area,and the contents of major and minor elements were analyzed based on the X-ray fluorescence methods. The results indicate that major elements contained in the desert vegetation are Cl,S,P,Ca,Si,Al,K,Na and Mg. Minor elements contained are Sr,Rb,Br,Zn,Cu,Ni,V,Ti,Ba,Mn and Fe. Different kinds of plants have different contents of elements,which indicates that plants have selective absorption of geochemical elements. The desert plant samples are rich in Ca,K and poor in Na,indicating unified influence of habitat on the chemical components of various plants.The chemical element contents of the plants in same family are similar,which shows that the chemical components of plant can be used as one of the indicators for plant classification.