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在长江三角洲对PAH健康风险未来变化的关键驱动因素的相对贡献量化:多场景建模方法
Ning Nie1, Ting Li2, Xinran Liu2
1College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China.
Journal of hazardous materials
|August 22, 2025
概括
在大多数环境中,社会经济因素减少了多环芳 (PAH),而气候和土地利用变化则推动了土壤,水和植被中的PAH动态. 综合战略对于减轻这些污染物带来的健康风险至关重要.
科学领域:
- 环境科学
- 毒理学
- 气候科学
背景情况:
- 多环芳 (PAH) 是普遍存在的致癌污染物,其环境分布受气候变化,土地利用和社会经济因素的影响.
- 了解这些驱动因素的复杂相互作用对于评估和减轻相关的人类健康风险至关重要.
研究的目的:
- 量化气候变化,土地利用变化和社会经济活动对PAH度动态,环境流动和健康风险的相对贡献.
- 在长江三角洲调查六种环境媒介 (不透气表面,植被,土壤,水,沉积物,空气) 的PAH行为.
- 通过分析整个21世纪的未来情景,为有针对性的污染控制策略提供见解.
主要方法:
- 使用了一种新型的结合模拟系统:未来土地利用模拟-土壤和水资源评估工具-多媒体城市模型 (FLUS-SWAT-MUM, FSMM).
- 在两个不同的未来气候社会经济场景下使用多场景模拟.
- 在多种环境中分析了PAH度动态,环境流动和健康风险.
主要成果:
- 社会经济因素通常会降低所有介质中的PAH度,并且是空气分布的主要驱动因素.
- 土壤中的PAH度受到社会经济和土地利用变化的影响;水度对气候情景高度敏感.
- 植被,沉积物和不透气的表面膜主要受到气候和土地利用变化的影响,土地利用变化影响PAH的降解和转移.
结论:
- 由于气候,土地使用和社会经济因素的相互作用,PAH的分布和健康风险是复杂的.
- 水中的健康风险最容易受到气候变化的影响,而不透气的表面薄膜是最大的风险,受气候和土地利用的影响.
- 结合气候适应,土地利用规划和社会经济发展的综合方法对于有效的环境和公共卫生保护至关重要.
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