地质与资源2023，Vol.32Issue(6)：779-788,10.DOI:10.13686/j.cnki.dzyzy.2023.06.015
内蒙古赤峰锡伯河流域土壤-中药材系统中的重金属元素
HEAVY METAL CONTENTS IN SOIL-CHINESE HERBAL MEDICINE SYSTEM IN XIBO RIVER BASIN,CHIFENG CITY,INNER MONGOLIA:
摘要
Abstract
Based on the test data of topsoil,Chinese medicinal materials and root soil samples,the paper studies the contents,spatial distribution characteristics and pollution degrees of five heavy metal elements including As,Cd,Cu,Hg and Pb in the topsoil of Chinese medicinal materials planting area of Niujiayingzi Town in Xibo River Basin,Chifeng City,Inner Mongolia,as well as the accumulation characteristics of soil heavy metals by different Chinese medicinal materials and heavy metal pollution degree of herbs.The results show that the five elements in the topsoil of Chinese medicinal materials planting area share the same origin,mainly from the parent material,and in association,with the mean contents of 8.729×10-6,0.142×10-6,21.146×10-6,0.036×10-6 and 23.651 ×10-6,respectively.The variation coefficients of Hg and Cd are 0.639 and 0.472 respectively,reaching the intensity variation,for their low soil background contents and more susceptible to various factors.Both the single and comprehensive pollution indexes of the soil heavy metals are less than 0.7,which shows a clean level of soil quality and meets the soil environmental requirements for the GAP base construction of Chinese medicinal materials.The concentration coefficients or pollution indexes of heavy metals in the medicinal parts of platycodon grandiflorum,glehnia littoralis and achyranthes bidentata are all less than 0.50,with their contents much lower than the limit value of heavy metals in Chinese medicinal materials.The Chinese medicinal materials produced in the planting area of Niujiyingzi Town all meet the requirements of green standard.关键词
重金属/中药材/生物富集/生态效应/赤峰市Key words
heavy metal/Chinese herbal medicine/bioconcentration/ecological effect/Chifeng City分类
天文与地球科学引用本文复制引用
梁帅,戴慧敏,张广阳,刘凯,翟富荣,李秋燕,魏明辉..内蒙古赤峰锡伯河流域土壤-中药材系统中的重金属元素[J].地质与资源,2023,32(6):779-788,10.基金项目
中国地质调查局项目"兴凯湖平原及松辽平原西部土地质量地球化学调查"(DD20190520). （DD20190520）
