地理科学 ›› 1998, Vol. 18 ›› Issue (4): 374-378.doi: 10.13249/j.cnki.sgs.1998.04.374

• 研究报道 • 上一篇    下一篇

南京太平门地段雪松树年轮及其根土中化学元素含量的相关性研究

钱君龙1, 柯晓康2, 尹卓思3, 柯善哲4, 何海军1, 唐劲松1   

  1. 1. 中国科学院南京地理与湖泊研究所, 南京 210008;
    2. 南京大学化学系, 南京 210093;
    3. 南京鼓楼区园林绿化管理所, 南京 210009;
    4. 南京大学物理系, 南京210093
  • 收稿日期:1997-08-29 修回日期:1998-05-08 出版日期:1998-07-20 发布日期:1998-07-20
  • 基金资助:
    国家自然科学基金

STUDY ON CORRELATION BETWEEN CHEMICAL ELEMENT CONTENTS IN TREE RINGS OF Cedrus Deodara (ROXB.) G. DON. TREES AND IN THE SOIL NEAR

Qian Junlong1, Ke Xiaokang2, Yin Zhuosi3, Ke Shanzhe4, He Haijun1, Tang Jingshon1   

  1. 1. Nanjing Institute of Geography & Limnology, Academia Sinica, Nanjing 210008;
    2. Chemical Department, Nanjing University, Nanjing 210093;
    3. Garden & Greenbelt Management Diveision of Gulou District, Nanjing 210009;
    4. Physics Department, Nanjing Unviersity, Nanjing 210093
  • Received:1997-08-29 Revised:1998-05-08 Online:1998-07-20 Published:1998-07-20

摘要: 1994年在南京市太平门街道采集了五株雪松的年轮样及其根部土壤(黄棕壤pH=6.68),分别测定了Li、Al、P、K、Mn、Co、Cu、Zn、Cd、Ba和Pb等11种化学元素含量,实测结果验证了雪松年轮与其根部当年土壤中化学元素含量满足对数线性相关模式;lgC’(Z,t)=a(Z)+b(Z)lgC(Z,t).根据年轮元素含量C(Z,t)可以重建过去根土中元素含量C’(Z,t),即反映环境(土壤)中元素含量的逐年演变的年份序列。利用C(Z,t)中最低含量可估算该地段黄棕壤的土壤元素背景值。

Abstract: Five Cedrus deodara (Roxb.) G. Don. trees growing in Taipingmen Street, Nanjing City (yellow brown soil pH=6.68), were selected to determine the contents of 11 chemical elements (Li, Al, P, K, Mn, Co, Cu, Zn, Cd, Ba and Pb) both in the 1994’s growth rings, C(Z,t), and in the soils near the roots, C’(Z,t) of trees. The results showed that the relationship between C(Z,t) and C’(Z,t) followed the logarithmic linear correlation model, lgC’(Z,t)=a(Z)+b(Z)lgC(Z,t). Based on this model the chrono sequences of chemical element contents in the soils were reproduced from those in the tree rings; i.e., the dynamic variations in the chemical element contents of the soils at the sites were traced. The background values of chemical elements in the soil were calculated by taking the lowest values of the chrono sequences of the element contents in tree rings.

中图分类号: 

  • S714