森林与环境学报2018，Vol.38Issue(1)：91-97,7.DOI:10.13324/j.cnki.jfcf.2018.01.015
阿克苏市绿地土壤重金属含量特征及污染评价
Assessment of heavy metal concentration charatc eristics and pollution risk in Aksu City
摘要
Abstract
In order to investigate soil heavy metal pollution level of green space at 5 different functional areas in the Aksu City, Xinjiang, soil samples were taken from 0-20 cm, 20-40 cm, 40-60 cm and 60-100 cm layer, and the content of Cu, Pb, Zn, Ni and Cr were measured.This paper analysed the soil heavy metal pollution situation and its pollution assessment based on the statistical analysis, principal component analysis, geo-accumulation index and potential ecological risk index.The results showed that the average content of Pb, Cu, Zn heavy metals exceeded the reference value of Xinjiang by 3.92, 3.64 and 1.75 times as well as exceeded the national soil environment qualityⅡstandard value ( GB15618—1995) by 2.92, 4.30 and 1.62 times.Heavy metal concentration appeared decrease trend with the increase of the soil depth.Soil heavy metal concentrations showed significantly different among the 5 areas and the level of transportation area was relatively high while that of suburban forest area was relatively low.The assessment of soil heavy metal pressented that 5 heavy metal ranked by Pb>Cu>Zn>Cr>Ni, Cu were located in moderate pollution situation but no pollution danger for Cr and Ni comprehensive potential ecological risk index of 5 heavy metal were all lower than 150 ( minor ecological risk) .The heavy metals in soil of urban green space came from different sources, Zn and Cu were mainly originated from anthropogenic sources, such as traffic, life waste, indurstrial waste, and Ni, Pb were originated from anthropogenic as well as natural sources while Cr were only controlled by natural sources.关键词
阿克苏市/绿地/土壤/重金属/生态风险/污染评价Key words
Aksu City/soil/green space/heavy metal/ecological risk/pollution assessment分类
农业科技引用本文复制引用
阿依加马力·克然木,玉米提·哈力克..阿克苏市绿地土壤重金属含量特征及污染评价[J].森林与环境学报,2018,38(1):91-97,7.基金项目
国家自然科学基金项目(31770750,51704259) （31770750,51704259）
新疆大学优秀博士研究生创新基金项目(XJUBSCX-2015013). （XJUBSCX-2015013）
