Impact of Traffic Island Greenbelts and One-side Greenbelts on Distribution of Heavy Metals in the Greenbelt Soil(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Impact of Traffic Island Greenbelts and One-side Greenbelts on Distribution of Heavy Metals in the Greenbelt Soil

Author(s):: CHEN Xiang1; 2; HU Yanyan1; 2; ZHU Benguo1; 2; XU Fuyin1; 2; BAO Bing1; 2; （1.Chongqing Institute of Landscape Gardening，Chongqing，401329；2.Chongqing Urban Landscape Engineering Technology Research Center，Chongqing 401329）

Abstract:: Greenbelts of 4 typical traffic island greenbelts and 3 one-side greenbelts in Chongqing were researched，with topsoil sampled from certain gradients away from the road for determining the contents of such heavy metals as Pb，Cd，Cr，Mn，Hg，As，Cu，Zn and Fe，so as to know impact of the two types of road greenbelts on heavy metal contents of greenbelt soil and to explore the protective effect of road greenbelts.The results showed that with the distance from the road increasing，the integral heavy metal pollution index of the greenbelt soil generally decreased.According to estimation based on linear equations，if a traffic island greenbelt was 80 m away from the road boundary，the integral heavy metal pollution index of soil at 50 m road-side greenbelt approaches 1.Within the researched area，the integral heavy metal pollution index of soil at the traffic island greenbelts has moderate correlation to the distance away from the road，that of soil at the road-side greenbelts has strong correlation to the distance away from the road，and that of soil at the road greenbelts generally has weak correlation to the distance away from the road，possibly due to different protective effects of the two types of greenbelts.

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Last Update: 2015-10-10