|Table of Contents|

Distribution Characteristics and Ecological Risk Assessment of Heavy Metals in Soils Around Gold Deposits in Desert Steppe

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2022年19
Page:
78-86
Research Field:
Publishing date:

Info

Title:
Distribution Characteristics and Ecological Risk Assessment of Heavy Metals in Soils Around Gold Deposits in Desert Steppe
Author(s):
YANG Xiaojie1; CUI Xiangxin1; SHAN Dan2; ZHANG Tiegang2; WANG Xiaoli3; WU Xunan3
(1.College of Desert Control Science and Engineering,Inner Mongolia Agricultural University,Hohhot,Inner Mongolia 010018;2.Institute of Water Resources for Pastoral Area,Ministry of Water Resources of China,Hohhot,Inner Mongolia 010020;3.Sunite Jinxi Gold Mining Co.Ltd.,Xilingol League,Inner Mongolia 011216)
Keywords:
desert steppe; soil heavy metals; spatial distribution; pollution assessment
PACS:
-
DOI:
10.11937/bfyy.20220193
Abstract:
Taking Bilihe gold mine soil in Suniteyou Banner of Xilingol league as the test material,geostatistical interpolation method and single factor index,Nemerow index,geo-accumulation index and potential ecological risk index were used to analyze spatial distribution of major heavy metals in the surrounding soil,in order to provide reference for soil remediation and environmental management of grassland metal mines.The results showed that the four main heavy metals in the study area were accumulated.Among them,6% of as exceeded the national soil agricultural land grade II standard,and Cu,Hg and Cd were under control.In terms of spatial distribution,the contents of Cu,Hg and Cd in the soil were higher in the east of the mining area than in the west,and the content of As in the north of the mining area was higher than that in the south.The soil heavy metal pollution assessment of single factor and geo-accumulation index were As>Cd>Cu>Hg,and the potential ecological risk index was Cd>Hg>As>Cu.The regional comprehensive ecological risk assessment result as follows,the south side of RI tailings pond (127.35) > the north side of RI tailings pond (118.18) > RI dump (96.26).The ecological risk level of the study area was dominated by slight ecological risk,and 10.2% of the area was at medium ecological risk.

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Last Update: 2022-12-06