基于Meta分析的广东省农用地土壤重金属污染现状  

Meta analysis of heavy metal pollution in agricultural soil in Guangdong Province

作　　者：黄国锋 王中伟 谢志宜 刘军 陈多宏 HUANG Guo-feng;WANG Zhong-wei;XIE Zhi-yi;LIU Jun;CHEN Duo-hong(Guangdong Ecological and Environmental Monitoring Center,Guangzhou 510308,China)

机构地区：[1]广东省生态环境监测中心,广东广州510308

出　　处：《中国环境科学》2025年第3期1431-1443,共13页China Environmental Science

基　　金：国家重点研发计划(2024YFE0202000)。

摘　　要：通过回顾2010年来广东省农田土壤重金属实测数据,利用Meta分析,基于“平均浓度”、“采样点数”、“标准差”计算全省合并效应量.结果表明,广东省重金属中Pb(48.83mg/kg)、Hg(0.18mg/kg)在我国处于较高水平,可能受到工矿活动的影响.此外,采用亚组分析来探讨各地市空间分布以及不同种植制度的影响.各地市分布特征表明,在经济较为发达的珠江三角洲地区以及矿产资源较为丰富的地区含量较高,其中污染最为严重的地区包括佛山(As:18.32mg/kg、Cr:73.5mg/kg、Ni:35.4mg/kg)、韶关(Pb:86.61mg/kg)、深圳(Cd:0.51mg/kg)、梅州(Cu:61.1mg/kg)等,其中农田土壤Cd浓度与地区工业产值显著相关(r=0.77,P<0.01),同时也受到当地人口、能源消耗等区位因素影响.耕作制度亚组分析结果显示,菜地和稻田中富集Cd、Pb、Zn、Cr和Hg;果园、设施农业中富集Cu、Zn、As、Ni,这可能与不同耕作制度中土壤理化性质、施肥施药习惯以及地质背景有关.本研究提供了在全省范围内关于农田土壤重金属空间分布和种植制度的信息,对广东省农田土壤重金属污染管理控制策略具有重要意义.In this paper,we reviewed the measured data of heavy metals in farmland soils in Guangdong Province since 2010.We applied a meta-analysis approach to combine the data based on“average concentration”“number of sampling points”and“standard deviation”.The results showed that the concentration of lead(Pb,48.83mg/kg)and mercury(Hg,0.18mg/kg)in Guangdong Province are among the highest in China,likely influenced by industrial and mining activities.In addition,subgroup analyses explored the effects of spatial distribution and cropping systems across different cities.The results revealed that heavy metal concentrations were higher in the economically developed Pearl River Delta and mineral-rich regions.Notably,some of the most polluted cities include Foshan city(As:18.32mg/kg,Cr:73.5mg/kg,Ni:35.4mg/kg),Shaoguan city(Pb:86.61mg/kg),Shenzhen city(Cd:0.51mg/kg),Meizhou city(Cu:61.1mg/kg),etc.Among them,farmland soil Cd concentration was significantly correlated with regional industrial output value(r=0.77,P<0.01),with additional impacts from factors such as the local population and energy consumption.The analyses of different farming systems showed that Cd,Pb,Zn,Cr,and Hg concentrations in soils were higher in land and paddy fields;while Cu,Zn,As,and Ni were enriched in orchards and facility-based agriculture,which may be related to the soil physicochemical properties,fertiliser and the geological backgrounds in different farming systems.This study provides province-wide information on the spatial distribution of heavy metals in agricultural soils and cropping systems,which is of great significance to the management and control strategies of heavy metal pollution in agricultural soils in Guangdong Province.

关 键 词：农用地土壤 重金属 META分析 分布特征 

分 类 号：X53[环境科学与工程—环境工程]