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一个综合的方法来量化地表土壤的微量金属来源的典型的农田在三河平原,中国

Yingyi Meng¹, Fanpeng Kong², Xiaojie Liu¹

¹Key Laboratory of Natural Resource Coupling Process and Effects, Ministry of Natural Resources, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China.

Environmental pollution (Barking, Essex : 1987)

|September 25, 2023

概括

农业土壤中的微量金属 (TMs) 对人类健康构成风险. 虽然 (Hg) 一般没有受到污染,但在某些地区显示中等水平,需要注意可持续的土壤管理.

科学领域:

环境科学环境科学
土壤科学土壤科学
地质化学地质化学

背景情况:

农业土壤中的微量金属 (TM) 由于潜在的作物吸收和人类健康风险,越来越令人担忧.
了解TM的分布和来源对于管理农业可持续性至关重要.

研究的目的:

评估中国三河平原农业土壤中8种微金属 (Cd,Cr,Cu,Hg,Mn,Ni,Pb,Zn) 的度和污染水平.
通过使用先进的分析技术,识别农业土壤中微量金属的来源.

主要方法:

地质积累指数 (Igeo) 计算用于评估TM污染.
使用Kriging空间预测来绘制潜在的污染热点.
用自组织地图 (SOM) 和正矩阵因子化 (PMF) 模型来识别TM来源.

主要成果:

土壤一般没有显著的TM污染,除了 (Hg),这表明了一些地区的中度污染.
大约1.55%的研究区域显示出潜在的Hg污染.
(Cd), (Cr),铜 (Cu), (Mn) 和 (Ni) 的含量从未受到污染到中度受到污染.
自然亲生材料,煤矿开采,煤炭厂运营和农业实践被确定为主要的TM来源.

结论:

虽然整体的TM污染很低,但建议对Hg进行有针对性的监测.
源标识强调需要管理工业和农业活动,以减轻TM污染.
调查结果支持该地区开发可持续农业管理战略.

关键词:

农业土壤农业土壤阳性矩阵分解因子是正的.自组织地图的自我组织地图源标识来源的标识.微量金属微量金属微量金属

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