文档介绍：Spatial Variability Analysis of Soil Heavy Metals
Pollution under the Influence of Road Traffic

Liu Bo, Wu shao-hua, Zhou Sheng-lu, Wang Jing, Xu mingxing

School of Geographic and Oceanographic Sciences
Nanjing University
Nanjing, China
zjliubo@

Abstract—This paper collected soil samples on provincial
highway of Qiting of Yixing City at the leeward of the wind to II. MATERIALS AND METHODS
study the space diversity condition of soil heavy metal pollution
at the side of the road traffic under the influence of traffic. The A. Sample collection
results shows that: ① Contents of Pb and Cu in the farmland soil Sampling area was laid at the leeward side of main road of
on both sides of transport road existed accumulative phenomena Qiting in Yixing City. We could lay five transects along the
and they were affected by transportation significantly, while direction perpendicular to the highway for laying soil
those of Ni and Zn were close to the local level, which meant the
sampling points and collecting samples. The direction of
transportation has tiny effect on them; ② Under the influence of
transect was perpendicular to the road, and transect interval
road traffic, the distribution of Pb and Cu was ribbon
heterogeneous, and that showed the extent of spatial approximate 200 m. The distance of sample points was about
autocorrelation was higher at the vertical direction of the 30 m, and sampling depth was 0~20 cm. Sampling diagram is
highway than that along the highway; changes of Zn and Ni shown in Figure 1.
content in soil had little difference in all directions, and its
distribution was isotropic.

Keywords-traffic; soil heavy metals; spatial variability; Yixing
I. INTRODUCTION
Recent years, it has catched increasing public attention on
the region surrounding city where soil pollution has direct or
indirect influence on public health[1-2]. With the rapid
development of auto industry's and growth