在青海省杜兰县进行土壤重金属来源分配和环境差异化研究,使用地质探测器分析
Yingchun Yang1, Qi Tian1, Yao Niu1
1Fifth Institute of Geological and Exploration of Qinghai Province, Xining, 810000, China.
Environmental monitoring and assessment
|December 20, 2023
概括
青海-西藏高原的土壤重金属来源被确定为地质. 环境因素对这些来源产生了重大影响,综合因素比单个因素的影响更大.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 土壤科学 土壤科学
背景情况:
- 青海-西藏高原的环境恢复需要了解材料来源和环境影响.
- 土壤重金属污染对区域生态系统和人类健康构成风险.
研究的目的:
- 为了阐明土壤重金属的来源在博汉布达山脉,杜兰县,青海省.
- 研究环境因素对重金属积累和空间变化的影响.
- 为该地区的土壤重金属保护和管理提供科学基础.
主要方法:
- 收集和分析了6274个表面土壤样本.
- 计算重金属 (As, Cr, Cu, Hg, Ni, Pb, Sb, Sn, Zn) 的地质积累指数.
- 主要组件分析 (PCA) 和地质探测器分析,以确定来源和影响因素.
主要成果:
- (Pb) 度超过背景值; (Hg) 污染率低;其他金属没有受到污染.
- PCA确定了土壤元素的四个地质来源.
- 地质探测器分析证实地质因素是对物质来源的主要影响因素.
- 环境因素显著改变了材料来源的贡献,这些因素的结合产生了协同效应.
- 土地覆盖类型和地质背景在物质来源贡献 (1, 2,和3) 中显示出显著差异.
结论:
- 研究区土壤重金属的主要来源是地质的.
- 环境因素,特别是它们的相互作用,在调节重金属分布方面发挥着至关重要的作用.
- 了解这些来源和影响因素对于有效的土壤重金属管理和青海西藏高原环境恢复至关重要.
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