植物生态学报 ›› 1991, Vol. 15 ›› Issue (3): 224-233.

• 论文 • 上一篇    下一篇

北京百花山附近杂灌丛的化学元素含量特征

黄建辉,陈灵芝   

  • 发布日期:1991-03-10
  • 通讯作者: 黄建辉

A Study of Chemical Contents in a Mixed Shrubland Near Baihuashan Mountain in Beijing

Huang Jian-hui Chen Ling-zhi   

  • Published:1991-03-10
  • Contact: Zheng Wen-jiao

摘要: 绒毛绣线菊、荆条和蚂蚱腿子是百花山地区杂灌丛中的3种共优势植物。通过对植物(叶、主枝、侧枝、主根、侧根5个部位)和土壤中10种元素(N、K、Ca、Mg、Mn、Cu、Zn、Fe、Al和Na)的测定,发现在不同植物、同种植物的不同器官里,各种元素的含量有着显著的差异,而且还存在着季节性的变化。10种元素在群落里的积累量以Ca为最高,其次是N。在灌木层里的顺序为Ca>N>K>Mg>Fe>Al,在草本层里则为Ca>N>Al>Fe>K>Mg,而在枯枝落叶层里又为Ca>N>Al>Fe>Mg>K。土壤中营养元素的贮藏也以Ca为最高,其次是N,其它8种元素的顺序为Na>Mg>K>Ma>Al>Fe>Zn>Cu。植物富集系数以K、Fe和Al较高,最低是Na。Na是唯一在土壤中的含量大于植物中的一种元素。

Abstract: Spiraea dasyantha, Myripnois dioica, Vitex negundo var, heterophylla are the three co-dominant spieces in a mixed shrubland in the region of Baihuashan Mountain. According to the chemicae content analysis of the plants (leaf, stem, branch, lateral root, taperoot) and soil in this study, it was found that different plants and different organs have very different contents of all chmical elements and content variation in different seasons. Ca and N have the highest accumulation among the ten elemtnts analysised in this shrub community. In the herb layer, the first six elements of accumulation are in the order of Ca>N>Al>Fe>K>Mg and Ca>N>Al>Fe>Mg>K in the litter layer, Ca>N>K>Mg>Fe>Al in the shrub layer. Ca was found to have highest content in soil nutrient pool and N is the second one also. The other eight elements are in the order of Na>Mg>K>Mn>Al>Fe>Zn>Cu. Thus the chemical content of plant and soil are related. The accumulation index, the ratio of accumualtion of nutrient elemtnts in plants to that in soil, can reflect the relationship. K, Fe and Al have the highest accumulation coefficient and Na has the lowest one.