山东国土资源2023，Vol.39Issue(12)：49-56,8.DOI:10.12128/j.issn.1672-6979.2023.12.008
山东省临沭县北部农用地土壤重金属分布特征及生态风险评价
Distribution Characteristics and Ecological Risk Assessment of Heavy Metals in Agricultural Soil in Northern Linshu County in Shandong Province
摘要
Abstract
In this paper,taking agricultural surface soil in the northern part of Linshu county in southeast-ern Shandong province as the research object,the content and distribution characteristics of 8 heavy metal elements in the soil have been analyzed,and the ecological risk of heavy metal in the agricultural soil in the study area have been evaluated by using land accumulation index method and the potential ecological risk index method.As showed by the results,among 8 heavy metals,except for Pb element,which is slightly higher than the background value of the surface soil in Linyi city,the remaining 7 elements are all lower than the background value.The overall accumulation of metals in the surface soil of the study area is rela-tively light,and the order of heavy metal accumulation in the soil from strong to weak is Hg＞As＞Zn＞Cd＞Cu＞Ni＞Cr＞Pb.0.30％of the samples with Hg element belong to the level of moderate accumula-tion or above,making them the most severely accumulated elements.There may be a certain degree of se-vere pollution locally.The single factor potential ecological risk of five elements,such as Cr,Cu,Ni,Pb,and Zn is relatively small.Hg and Cd are the two elements with the most severe degree of harm in the sin-gle factor potential ecological risk assessment.The comprehensive potential ecological risk index shows that 72 samples have reached a moderate risk level or above,which is mainly influenced by the two ele-ments Hg and Cd.The research results can provide important scientific basis for the safety management of agricultural product production areas and sustainable agricultural development in the region.关键词
农用地土壤/重金属/分布特征/生态风险/临沭县北部/山东省Key words
North of Linshu county/agricultural soil/heavy metals/distribution characteristics/ecologi-cal risk分类
天文与地球科学引用本文复制引用
张永帅,荣玉伟,李付全,刘孝峰,郭海鹏,于福兴,段友春..山东省临沭县北部农用地土壤重金属分布特征及生态风险评价[J].山东国土资源,2023,39(12):49-56,8.基金项目
山东省2020年度省级地质勘查项目"山东省临沭县北部土地质量地球化学调查与评价"(鲁自然资函[2020]809号) （鲁自然资函[2020]809号）
