扬州大学学报（农业与生命科学版）2025，Vol.46Issue(3)：139-146,8.DOI:10.16872/j.cnki.1671-4652.2025.03.016
应用多种方法对稻田土壤重金属污染进行评价
Evaluation of heavy metal pollution in paddy soil using multiple methods:A case study of Yingtan city,Jiangxi province
摘要
Abstract
The soil heavy metal pollution has become increasingly severe,posing significant threats to food security and human health.This study investigated paddy fields in Yingtan city,Jiangxi province,and analyzed 53 topsoil samples for cadmium,arsenic,chromium,mercury,lead concentrations and pH levels.Using Jiangxi's soil background values and agricultural land risk screening values as benchmarks,we evaluated pollution status through four methods:single-factor pollution index,geo-accumulation index,and both conventional and modified Nemerow pollution indices.The results showed that:① Average soil pH was 5.41;② Mean heavy metal concentrations(mg·kg-1)were chromium 67.28,ar-senic 5.72,cadmium 0.36,mercury 0.11,and lead 38.86,with cadmium exceeding safety thresholds;(The comprehen-sive pollution evaluation levels of heavy metals in soil were ranked from high to low as follows:modified Nemerow index refer-enced to provincial background values＞conventional Nemerow index using risk screening values＞conventional Nemerow index using background values.The study recommends adopting the modified Nemerow index(integrated with geoaccumulation evaluation)for paddy soil evaluation,providing critical data support for agricultural safety management.关键词
稻田/土壤/重金属/评价/改进型内梅罗污染指数Key words
paddy fields/soil/heavy metals/evaluation/modified Nemerow pollution index分类
农业科技引用本文复制引用
吴俊颖,曲斌,熊江花,陈柳萌,甄峰..应用多种方法对稻田土壤重金属污染进行评价[J].扬州大学学报（农业与生命科学版）,2025,46(3):139-146,8.基金项目
国家自然科学基金资助项目(42467017) （42467017）
广州市科技计划项目(2023B03J1229) （2023B03J1229）
赣州市重点研发计划项目(GZ2024ZDZ009) （GZ2024ZDZ009）
