福建林学院学报2012，Vol.32Issue(3)：199-207,9.
福建沿海公路旁土壤重金属分布格局及防护林的作用
Spatial distribution and contamination of heavy metals in the soil along the highway of Fujian and protective effect of coastal protection forest
摘要
Abstract
Seven heavy metals (Pb, Cr, Cu, Zn, Cd, Ni, As) were investigated by pollution index which was the ratio of heavy metal concentrations in polluted soils against that in non-polluted background soil between forest region and non-forest region, compared the different pollution effects among them. The results showed as follows. (1) The highest concentrations of most heavy metals in non-forest region, except for Zn in soils, were at 100 to 200 m away from the roadbed, then gradually decreased to the control values. But in forest region which was at 10 to 50 m away from the roadbed. The concentrations of soil heavy metals in other sampling lite* behind the highest concentrations of the forest region were significantly lower than the corresponding sampling sites at non-forest region. (2) The index of single-pollution showed, except for Cr and Ni, the incidence of all heavy metal elements in non-forest region achieved 200 m from the roadbed, Zn and Cu were the most serious pollution in this region. But in forest region, the incidence reduced to 100 m. (3) The index of multi-pollution showed, the incidence of heavy metal pollution in non-forest region achieved 300 m from the roadbed, which reduced to 200 m in forest region. (4) The correlation analysis showed, the heavy metal pollution in soil mainly derived from the road traffic, according to the current coastal protection forest management, on both sides of the road, constructing 50 m width shelterbelts can effectively inhibit the diffusion of heavy metal pollution which caused by traffic.关键词
有林带/无林带/重金属污染/污染指数/水平格局/防护作用Key words
forest region/ non-forest region/ heavy metal pollution/ pollution index/ dispersion pattern/ protective effects分类
环境科学引用本文复制引用
尤龙辉,叶功富,陈增鸿,白永会,朱美琴,高伟..福建沿海公路旁土壤重金属分布格局及防护林的作用[J].福建林学院学报,2012,32(3):199-207,9.基金项目
国家"十一五"科技支撑计划专题(2009BADB2B0302) （2009BADB2B0302）
国家自然科学基金资助项目(41176092). （41176092）
