茶叶科学2024，Vol.44Issue(1)：37-52,16.
基于Meta分析的2000-2022年中国茶园土壤重金属污染风险评价与来源分析
Risk Assessment and Source Analysis of Heavy Metal Pollution in Chinese Tea Gardens in 2000-2022 Based on Meta-analysis
摘要
Abstract
Heavy metal pollution is one of the important factors affecting the ecological environment of tea gardens and the safety of tea products.This study collected literature on heavy metal(Cu,Pb,As,Hg,Cd,Cr,Zn,Ni)pollutions in tea garden soils in major tea producing areas in China,including Hubei,Hunan,Fujian,Yunnan,Guizhou and Sichuan.The weight of a single study was obtained using meta-analysis method to obtain the weighted average of heavy metal concentrations in tea garden soils in each province and across the country.The potential ecological risk index method and geological accumulation index method were used for ecological risk assessment,and source analysis using the APCS-MLR model was applied.The results show that compared with the background values,all 8 heavy metals were enriched to a certain extent,with Hg and Cd pollutions being more severe.The moderate and above risks of Hg were mainly distributed in inland provinces such as Guizhou,Shaanxi,Sichuan and Anhui.The moderate and above risks of Cd were mainly distributed in coastal provinces such as Guangdong,Fujian,Zhejiang,Jiangsu,Shandong,Hainan,etc.The two heavy metals show mild to moderate risks.Compared with other countries in the world,tea gardens or agricultural land in developing countries generally have higher levels of heavy metals,with Cd and Hg being the elements with more severe pollution levels.The source analysis results show that the first,second,third,and fourth principal components are natural sources,industrial activity pollution sources,traffic exhaust pollution sources,and agricultural activity pollution sources,respectively.Industrial and agricultural activities are the main pollution factors,with Hg mainly coming from industrial activities and Cd mainly coming from agricultural activities.关键词
茶园土壤/重金属污染/Meta分析/风险评价Key words
tea garden soil/heavy metal pollution/meta-analysis/risk assessment分类
农业科技引用本文复制引用
杨琰琥,陈潇涵,张晓晴,任大军,张淑琴,陈旺生..基于Meta分析的2000-2022年中国茶园土壤重金属污染风险评价与来源分析[J].茶叶科学,2024,44(1):37-52,16.基金项目
湖北省高等学校哲学社会科学研究重大项目(22ZD048)、湖北省国际科技合作计划项目(2023EHA011) （22ZD048）
