地理科学 ›› 2001, Vol. 21 ›› Issue (6): 549-553.doi: 10.13249/j.cnki.sgs.2001.06.549

• 论文 • 上一篇    下一篇

向海湿地沉积芯重金属对流域环境污染示踪

王国平1, 刘景双1, 高峰2   

  1. 1. 中国科学院长春地理研究所, 吉林 长春 130021;
    2. 松辽流域水资源保护局, 吉林 长春 130021
  • 收稿日期:2001-01-16 修回日期:2001-05-10 出版日期:2001-11-20 发布日期:2001-11-20
  • 基金资助:
    中科院创新工程"中国典型湿地水陆相互作用过程、资源环境效应及调控"(KZCX2-302)资助。

Environmental Pollution Tracing of the Catchment by Heavy Metals in Sediment Cores of the Xianghai Wetlands

WANG Guo-ping1, LIU Jing-shuang1, GAO Feng2   

  1. 1. Changchun Institute of Geography. CAS, Changchun, Jilin 130021;
    2. Protection Agency of Water Sources in Songliao Catchments, Changchun, Jilin 130021
  • Received:2001-01-16 Revised:2001-05-10 Online:2001-11-20 Published:2001-11-20

摘要: 选取霍林河下游向海沼泽湿地为研究对象,采用重力沉积芯采样钻钻孔采样与剖面切割采样相结合的方法,采集了10个沉积柱芯及剖面,对沉积物重金属元素Cu、Zn、Cr、Ni、Co、Pb、Fe、Mn及pH、TOC在剖面中的分布进行高分辨率研究。结果显示,剖面上部沉积物表层沉积序列内已明显富集了Fe、Mn、Zn等重金属,并与TOC含量呈显著相关。与此相反,大多数沉积柱芯下层的重金属含量相对较低。研究表明,高分辨率取样易找出元素间相关性,那些水源来自同一相对稳定外源输入的沉积柱芯中的重金属与TOC表现出更显著的相关性。越靠近河流,淹没频率越高,沼泽湿地表层沉积物中重金属元素含量趋向增高。

Abstract: Here we report a case study on the Xianghai wetlands at downstream of the Huolin River. Core samples were taken with a gravity corer and profile samples dug by handed-tools. Ten cores and profiles were taken and studied with high-resolution to Cu, Zn, Cr, Ni, Co, Pb, Fe, Mn, pH, TOC and TN in sediments. Within the upper part of the sedimentary sequences, there were clear enrichments of Zn, Fe and Mn, and they displayed remarkable relativity with TOC, especially for the cores whose water source was coming from the same relatively stable outer-source input. On the contrary, the content of heavy metals in the most of the lower parts of the core profiles were relatively lower and closed to natural geochemical background levels. It is easy to find the relativity among the elements if sampling with high-resolution. The nearer to the river and the higher inundate frequency by its floods, the higher of the contents of heavy metals within the upper part of the sedimentary sequences.

中图分类号: 

  • X142