江西农业学报2023，Vol.35Issue(10)：111-119,9.DOI:10.19386/j.cnki.jxnyxb.2023.10.017
赣南某稀土矿山及其周边基本农田土壤重金属分布特征及肥力等级评价研究
Distribution Characteristics of Soil Heavy Metals and Fertility Level Evaluation in A Rare Earth Mine and Its Surrounding Basic Farmland in Southern Jiangxi Province
摘要
Abstract
This study took the southern Ganzhou rare earth mining area as the object,collected 70 soil samples from the mining area and 80 soil samples from the surrounding farmland,determined the soil pH,heavy metals and conventional fertility indexes,and analyzed and evaluated the soil heavy metals and fertility indexes by single factor and comprehensive evaluation method.The results showed that:(1)The soil in the study area was acidic as a whole,and the total amount of lead in 26 mine soil samples exceeded the screening value.The maximum detected concentration was 470.21 mg/kg,and the maximum detected concentration of cadmium in soil samples from surrounding farmland was 0.57 mg/kg.The total amount of lead in 15 soil samples exceeded the screening value,and the maximum detected concentration was 129.0 mg/kg.(2)The content of heavy metal Pb in the mining area was positively correlated with the soil Pb content in the surrounding farmland,and the correlation coefficient was 0.692.The area with high concentration of heavy metal Cd was mainly distributed in the southern farmland area of the study area.The high concentration of heavy metal Pb was mainly concentrated in the northeast where other industrial production such as mining and machining plants were concentrated.(3)The fertility index of the mining area in the study area was significantly lower than that of the surrounding basic farmland soil,and low level fertility accounted for 60.87%,but high level fertility accounted for only 2.90%.The fertility grade of the surrounding basic farmland area was above medium,accounting for 82.71%.关键词
赣南/稀土矿山/重金属污染/肥力等级/矿山复绿Key words
Southern Jiangxi Province/Rare earth mine/Heavy metal pollution/Fertility level/Mine greening分类
资源环境引用本文复制引用
陈柯罕,沈飞,胡妮,肖安林,杨在文,李雄飞,徐智敏..赣南某稀土矿山及其周边基本农田土壤重金属分布特征及肥力等级评价研究[J].江西农业学报,2023,35(10):111-119,9.基金项目
广东省科技计划项目(2020B1212060048). （2020B1212060048）
