鄱阳湖平原区典型山地大气湿沉降重金属沉降特征及其来源解析研究OACHSSCD
Research on the Characteristics of Heavy Metal Concentrations of Atmospheric Wet Deposition and Source Analy-sis for the Typical Mountains in the Poyang Lake Plain Area
大气重金属污染问题已严重威胁人类健康和生态安全,也成为限制社会经济发展的重大生态环境问题.为揭示鄱阳湖平原区典型山地的降水重金属沉降浓度变化及来源,于 2018 年 1 月至 2020 年 12 月期间采集了庐山地区大气降水样品,测定了降水中锰(Mn)、镍(Ni)、铜(Cu)、锌(Zn)、砷(As)、镉(Cd)和铅(Pb)这 7 种重金属元素浓度,运用降水量体积加权、单因素方差分析(ANOVA)、正矩阵分解(PMF)模型及拉格朗日积分轨迹模型(HYSPLIT)对其浓度水平及来源进行分析.研究结果显示,在 7 种降水重金属中,锌(Zn)体积加权浓度最高(41.87 μg·L-1),镉(Cd)体积加权浓度最低(0.14 μg·L-1),且 7 种降水重金属浓度均低于地下水二类水质标准;降水重金属浓度受降雨量、温度、降水 pH 值和人类活动的共同影响,呈现明显的季节变化.降水重金属浓度受工业活动及疫情的综合作用影响,呈现出显著的年际动态变化特征.降水重金属污染源主要从西南和东方向输送至庐山,分别为能源消耗源和生活污染源(22.6%)、有色金属开采源(22.5%)、交通运输及农业生产混合源(27.2%)、工业源(27.7%).相较于局部源,远距离输送源以及区域人为源对庐山降水重金属元素的影响更为显著.本研究对鄱阳湖平原区典型山地大气重金属沉降的监测与治理、生态环境安全维护具有重要的现实意义.
Atmospheric heavy metal pollution seriously threatens human health and ecological security and has become a major ecological and environmental issue restricting socioeconomic development.To reveal the concentration variations and sources of heavy metals in precipitation in typical mountainous areas of the Poyang Lake Plain,precipitation samples were collected in the Lushan area from January 2018 to December 2020.The concentrations of seven heavy metal elements,namely manganese(Mn),nickel(Ni),copper(Cu),zinc(Zn),arsenic(As),cadmium(Cd),and lead(Pb),were determined.The concentration levels and sources were analyzed using precipitation-volume-weighting,one-way anal-ysis of variance(ANOVA),the Positive Matrix Factorization(PMF)model,and the Hybrid Single-Particle Lagrangian Integrated Trajectory(HYSPLIT)model.The research results show that,among the seven heavy metals in precipitation,zinc(Zn)has the highest volume-weighted concentration(41.87 μg·L-1),whereas cadmium(Cd)had the lowest con-centration(0.14 μg·L-1).Moreover,the concentrations of all seven heavy metals were lower than the Class Ⅱ ground-water quality standards.Heavy metal concentrations in precipitation were jointly influenced by precipitation,temperature,precipitation pH and human activities and exhibited obvious seasonal variations.The concentrations of heavy metals in pre-cipitation were also affected by the combined effects of industrial activities and the prevention and control measures imple-mented during the pandemic,resulting in significant interannual variation.The source of heavy metals in precipitation were mainly transported to Lushan from the southwest and east.The identified sources included energy consumption sources and domestic pollution sources(22.6%),non-ferrous metal mining sources(22.5%),mixed transportation and agricultural production sources(27.2%),and industrial sources(27.7%).This study has important practical implica-tions for monitoring and controlling atmospheric heavy metal deposition in typical mountainous areas of the Poyang Lake Plain and for maintaining ecological environment security.
曾敏;刘欣雨;周晶;李静;张漫珍;叶辉;吴华武
九江学院旅游与地理学院,江西 九江 332005||安徽省实景地理环境重点实验室,安徽 滁州 239000||安徽省遥感与地理信息工程研究中心,安徽 滁州 239000||滁州学院地理工程与空天信息学院,安徽 滁州 239000九江学院旅游与地理学院,江西 九江 332005赣江中游水文水资源监测中心,江西 吉安 343000安徽省实景地理环境重点实验室,安徽 滁州 239000||安徽省遥感与地理信息工程研究中心,安徽 滁州 239000||滁州学院地理工程与空天信息学院,安徽 滁州 239000九江学院旅游与地理学院,江西 九江 332005九江学院旅游与地理学院,江西 九江 332005河海大学水灾害防御全国重点实验室/长江保护与绿色发展研究院,江苏 南京 210098
资源环境
降水重金属鄱阳湖平原区影响因素源解析HYSPLIT模型
heavy metals in precipitationPoyang Lake Plaininfluencing factorssource analysisHYSPLIT Model
《生态与农村环境学报》 2026 (8)
1125-1136,12
国家自然科学基金项目(42201105,42571093)安徽省教育厅科学研究项目(2025AHGXZK31338)
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